DOCSLIB.ORG

Coherent Vectorial Switch of Optomechanical Entanglement

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Coherent Vectorial Switch of Optomechanical Entanglement Research Article Photonics Research 1 Coherent vectorial switch of optomechanical entanglement YING LI1,*,Y A-FENG JIAO1,*,J ING-XUE LIU1,A DAM MIRANOWICZ2,Y UN-LAN ZUO1,L E-MAN KUANG1,†, AND HUI JING1,‡ 1Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha 410081, China 2Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University, 61-614 Poznan,´ Poland *Co-first authors with equal contribution. †[email protected] ‡Corresponding author:[email protected] Compiled July 20, 2021 The polarizations of optical fields, besides field intensities, provide more degrees of freedom to manipulate coher- ent light-matter interactions. Here we propose how to achieve a coherent switch of optomechanical entanglement in a polarized-light-driven cavity system. We show that by tuning the polarizations of the driving field, the effective optomechanical coupling can be well controlled and, as a result, quantum entanglement between the mechanical oscillator and the optical transverse electric (TE) mode can be coherently and reversibly switched to that between the same phonon mode and the optical transverse magnetic (TM) mode. This ability of switching optomechanical entanglement with such a vectorial device can be important for building a quantum network being capable of efficient quantum information interchanges between processing nodes and flying photons. © 2021 Optical Society of America http://dx.doi.org/10.1364/ao.XX.XXXXXX 1. INTRODUCTION macroscopic entanglement between light and motion via polarization control has not yet been explored. Vector beams, characterized by the ability to tailor light by polarization A peculiar property of quantum entanglement, that measuring one control, are important for both fundamental researches and practical part of the entangled elements allows to determine the state of the applications in optics and photonics [1–3]. Manipulating the polariza- other, makes it a key resource for quantum technologies, ranging from tion of vector beams, for examples, provides efficient ways to realize quantum information processing [28, 29] to quantum sensing [30, 31]. optical trapping or imaging [4–6], material processing [7, 8], opti- Recently, entanglement-based secure quantum cryptography has also cal data storage [9], sensing [10], and nonlinearity enhancement [11]. been achieved at a distance over 1,120 kilometres [32]. So far, quantum Compared with conventional scalar light sources, vector beams provide entanglement has been observed in diverse systems involving photons, more degrees of freedom to regulate coherent light-matter interac- ions, atoms, and superconducting qubits [33, 34]. Quantum effects arXiv:2107.08384v1 [quant-ph] 18 Jul 2021 tions, that is, manipulating the coupling intensity by tuning spatial such as entanglement has also been studied at macroscopic scales and polarization distributions of an optical field [12–15]. Thus, vector even in biological systems [35]. In parallel, the rapidly emerging field beams have been used in a variety of powerful devices, such as opto- of cavity optomechanics (COM), featuring coherent coupling of mo- electrical [16, 17] or optomechanical systems [18, 19], metamaterial tion and light [36, 37], has provided a vital platform for engineering structures [20, 21], and atomic gases [22]. In a recent experiment, macroscopic quantum objects [38–40]. Very recently, quantum cor- through vectorial polarization control, coherent information transfer relations at room temperature were even demonstrated between light from photons to electrons was demonstrated [16]. In the quantum and a 40kg mirror, circumventing the standard quantum limit of mea- domain, mature techniques have been developed for creating entangled surement [41]. Quantum entanglement between propagating optical photons with vector beams [23, 24], and by using the destructive in- modes, between optical and mechanical modes, or between massive terference of the two excitation pathways of a polarized quantum-dot mechanical oscillators have all been realized in COM systems [42–50]. cavity, unconventional photon blockade effect was observed very re- In view of these rapid advances, COM devices have becomes one of the cently [25]. We also note that the single- and multi-photon resources promising candidates to operate as versatile quantum nodes processing with well-defined polarization properties, which are at the core of chiral or interchanging information with flying photons in a hybrid quantum quantum optics, have also been addressed via metasurfaces [26, 27]. network. However, as far as we know, the possibility of generating and switching Here, based on a COM system, we propose how to achieve a coher- Research Article Photonics Research 2 ent switch of quantum entanglement of photons and phonons through (a) polarization control. We show that the intracavity field intensity and κ γm the associated COM entanglement can be coherently manipulated by adjusting the polarization of a driving laser. This provides an efficient ωL way to manipulate the light-motion coupling, which is at the core ωc ωm of COM-based quantum technologies. Besides the specific example S of COM entanglement switch, our work can also serve as the first step towards making vectorial COM devices with various structured Polarizer θ lights, such as Bessel-Gauss beams, cylindrical beams or the Poincaré beams [1, 51, 52], where the optical polarization distribution is spa- tially inhomogeneous. Our work can also be extended to various COM (b) Cavity mode systems realized with e.g., cold atoms, magnomechanical devices, and TE Polarization optoelectrical circuits [53, 54]. θ vector Mechanical TM 2. VECTORIAL QUANTUM DYNAMICS mode κ As shown in Fig.1, we consider a polarized-light-driven optomechan- ical system, which consists of an optical polarizer and a Fabry-Pérot γm cavity with one movable mirror. Exploiting the polarization of pho- tons rather than solely their intensity, has additional advantages for Δc controlling light-matter interactions. Here, to describe the polarization Pump field of an optical field, it is convenient to introduce a set of orthogonal ωm ωL ωc basis vectors, i.e., j~eli and j~e$i, which correspond to the vertical (TE) and horizontal (TM) modes of the Fabry-Pérot cavity [55]. Therefore, Fig. 1. (a) Schematic diagram of a polarized-light-driven optome- an arbitrary linearly polarized light can be thought as a superposition chanical system, which consists of an optical polarizer and a Fabry- of these orthogonal patterns, i.e., whose unit vector is represented Pérot cavity with a movable mirror. (b) Frequency spectrogram of a by j~ei = cosq j~eli + sinq j~e$i, with q being the angle between the vector optomechanical system in panel (a), with q being the angle polarization of the linearly polarized light and the vertical mode [see between the polarization of the linearly polarized light and the verti- Fig.1(b)]. In this situation, by adjusting the polarization angle q, one cal mode. The orthogonal cavity modes with degenerate resonance can coherently manipulate the spatial distribution of a linearly po- frequency wc and decay rate k; the frequency of the mirror is wm; larized optical field. In addition, because light could exert radiation the driving frequency is wL, and Dc = wc − wL is optical detuning pressure on the movable mirror, both spatial components of the lin- between the cavity mode and the driving field early polarized light would experience an optomechanical interaction. ˆ † † Then, in a rotating frame with respect to H0 = h¯wL(aˆlaˆl + aˆ$aˆ$), the Hamiltonian of the polarized-light-driven optomechanical system where j =l,$, gm = wm/Qm is the mechanical damping rate with in is given by Qm the quality factor of the movable mirror; aˆ j are the zero-mean h¯w input vacuum noise operators for the orthogonal cavity modes, and ˆ m 2 2 † † ˆ H = (pˆ + qˆ ) + h¯ ∑ Dcaˆ j aˆ j − g0aˆ j aˆ jqˆ + Hdr, they satisfy the following correlation functions [56] 2 j=l,$ p in,† in 0 ˆ † ∗ haˆ (t)aˆ j (t )i = 0, Hdr = ih¯ 2k ∑ aˆ j S j − aˆ jS j , (1) j j=l,$ in in,† 0 0 haˆ j (t)aˆ j (t )i = d (t −t ). (3) † where aˆ j (aˆ j ) is the annihilation (creation) operator of the orthogonal cavity modes with degenerate resonance frequency wc and decay rate Moreover, xˆ denotes the Brownian noise operator for the mechanical k; pˆ and qˆ are, respectively, the dimensionless momentum and position mode, resulting from the coupling of the mechanical mode with the cor- operators of the mirror with mass m and frequency wm; Dc = wc −wL is responding thermal environment. It satisfies the following correlation optical detuning between the cavity mode and the driving field; g0 is the function [57] single-photon optomechanical coupling coefficient for both orthogonal cavity modes. The frame rotating with driving frequency w is obtained Z L ˆ ˆ 0 gm dw 0 h¯w Uˆ iHˆ t h hx (t)x (t )i = exp[−iw(t −t )] coth + 1 , by applying the unitary transformationp = exp[ 0 /¯] (see, e.g., wm 2p 2kBT 2 2 Ref. [36]). S = jSlj + jS$j = P/h¯wL denotes the amplitude of (4) a linearly polarized driving field with an input laser power P, where S = Scos and S = Ssin are the projections of S onto the vertical l q $ q where kB is the Boltzmann constant and T is the environment temper- and horizontal modes, respectively. ature of the mechanical mode. The noise operator xˆ(t) models the By considering the damping and the corresponding noise term of mechanical Brownian motion as, in general, a non-Markovian process. both optical and mechanical modes, the quantum Langevin equations However, in the limit of a high mechanical quality factor Qm 1, xˆ(t) (QLEs) of motion describing the dynamics of this system are obtained can be faithfully considered as Markovian, and, then, its correlation as function is reduced to p p in aˆ˙ j = (−iDc + ig0qˆ − k)aˆ j + 2kP/wLh~e jj~ei + 2kaˆ , j 0 0 hxˆ(t)xˆ(t )i ' gm(2nm + 1)d (t −t ), (5) qˆ˙ = wm pˆ, ˙ † ˆ −1 pˆ = −wmqˆ − gm pˆ + g0 ∑ aˆ j aˆ j + x, (2) where nm = [exp[(h¯wm/kBT )] − 1] is the mean thermal phonon j=l,$ number.
Load more

Recommended publications
  • HSK Level 3 Chinese Vocabulary List
    HSK Level 3 Chinese Vocabulary List http://www.StudyHSK.com http://www.StudyHSK.com * Character Pinyin English 1 1 阿姨 āyí maternal aunt 2 2 啊 a interjection of surprise 3 3 矮 ǎi low 4 5 爱好 àihào to like 5 6 安静 ānjìng quiet 6 8 把 bǎ to hold/handle 7 14 搬 bān to move (i.e. relocate oneself) 8 13 班 bān surname Ban/team 9 15 半 bàn half 10 16 办法 bànfǎ means 11 17 办公室 bàngōngshì office 12 18 帮忙 bāngmáng to help 13 20 包 bāo surname Bao/to cover 14 21 饱 bǎo to eat till full 15 24 北方 běifāng north 16 26 被 bèi quilt 17 28 鼻子 bízi nose 18 30 比较 bǐjiào to compare 19 31 比赛 bǐsài competition (sports etc) 20 32 必须 bìxū to have to http://www.StudyHSK.com * Character Pinyin English 21 33 变化 biànhuà change 22 34 表示 biǎoshì to express 23 35 表演 biǎoyǎn play 24 37 别人 biéren other people 25 38 宾馆 bīnguǎn guesthouse 26 39 冰箱 bīngxiāng icebox 27 42 才 cái ability/a moment ago 28 44 菜单 càidān menu 29 45 参加 cānjiā to participate 30 46 草 cǎo grass 31 47 层 céng layer 32 49 差 chà difference/to differ from/to send/uneven 33 52 超市 chāoshì supermarket (abbr.) 34 53 衬衫 chènshān shirt 35 54 成绩 chéngjì achievement 36 55 城市 chéngshì city 37 57 迟到 chídào to arrive late 38 59 出现 chūxiàn to appear 39 62 除了 chúle besides 40 61 厨房 chúfáng kitchen http://www.StudyHSK.com * Character Pinyin English 41 65 春 chūn surname Chun/spring (time) 42 66 词语 cíyǔ word 43 68 聪明 cōngming acute (of sight and hearing) 44 73 打扫 dǎsǎo to clean 45 74 打算 dǎsuàn to plan 46 77 带 dài band 47 78 担心 dānxīn anxious 48 79 蛋糕 dàngāo cake 49 81 当然 dāngrán only natural 50 83 地 de -ly/earth 51 86 灯 dēng lamp
    [Show full text]
  • Narrative Inquiry Into Chinese International Doctoral Students
    Volume 16, 2021 NARRATIVE INQUIRY INTO CHINESE INTERNATIONAL DOCTORAL STUDENTS’ JOURNEY: A STRENGTH-BASED PERSPECTIVE Shihua Brazill Montana State University, Bozeman, [email protected] MT, USA ABSTRACT Aim/Purpose This narrative inquiry study uses a strength-based approach to study the cross- cultural socialization journey of Chinese international doctoral students at a U.S. Land Grant university. Historically, we thought of socialization as an institu- tional or group-defined process, but “journey” taps into a rich narrative tradi- tion about individuals, how they relate to others, and the identities that they carry and develop. Background To date, research has employed a deficit perspective to study how Chinese stu- dents must adapt to their new environment. Instead, my original contribution is using narrative inquiry study to explore cross-cultural socialization and mentor- ing practices that are consonant with the cultural capital that Chinese interna- tional doctoral students bring with them. Methodology This qualitative research uses narrative inquiry to capture and understand the experiences of three Chinese international doctoral students at a Land Grant in- stitute in the U.S. Contribution This study will be especially important for administrators and faculty striving to create more diverse, supportive, and inclusive academic environments to en- hance Chinese international doctoral students’ experiences in the U.S. Moreo- ver, this study fills a gap in existing research by using a strength-based lens to provide valuable practical insights for researchers, practitioners, and policymak- ers to support the unique cross-cultural socialization of Chinese international doctoral students. Findings Using multiple conversational interviews, artifacts, and vignettes, the study sought to understand the doctoral experience of Chinese international students’ experience at an American Land Grant University.
    [Show full text]
  • Negotiation Philosophy in Chinese Characters
    6 Ancient Wisdom for the Modern Negotiator: What Chinese Characters Have to Offer Negotiation Pedagogy Andrew Wei-Min Lee* Editors’ Note: In a project that from its inception has been devoted to second generation updates, it is instructive nonetheless to realize how much we have to learn from the past. We believe Lee’s chapter on Chinese characters and their implications for negotiation is groundbreaking. With luck, it will prove to be a harbinger of a whole variety of new ways of looking at our field that will emerge from our next round of discussion. Introduction To the non-Chinese speaker, Chinese characters can look like a cha- otic mess of dots, lines and circles. It is said that Chinese is the most difficult language in the world to learn, and since there is no alpha- bet, the struggling student has no choice but to learn every single Chinese character by sheer force of memory – and there are tens of thousands! I suggest a different perspective. While Chinese is perhaps not the easiest language to learn, there is a very definite logic and sys- tem to the formation of Chinese characters. Some of these characters date back almost eight thousand years – and embedded in their make-up is an extraordinary amount of cultural history and wisdom. * Andrew Wei-Min Lee is founder and president of the Leading Negotiation Institute, whose mission is to promote negotiation pedagogy in China. He also teaches negotiation at Peking University Law School. His email address is an- [email protected]. This article draws primarily upon the work of Feng Ying Yu, who has spent over three hundred hours poring over ancient Chinese texts to analyze and decipher the make-up of modern Chinese characters.
    [Show full text]
  • A Comprehensive Review on Recent Methods and Challenges of Video Description
    A Comprehensive Review on Recent Methods and Challenges of Video Description ALOK SINGH, THOUDAM DOREN SINGH, and SIVAJI BANDYOPADHYAY, Centre for Natural Lan- guage Processing (CNLP) and Department of Computer Science and Engineering, National Institute of Technology Silchar, India Video description involves the generation of the natural language description of actions, events, and objects in the video. There are various applications of video description by filling the gap between languages and vision for visually impaired people, generating automatic title suggestion based on content, browsing of the video based on the content and video-guided machine translation [86] etc. In the past decade, several works had been done in this field in terms of approaches/methods for video description, evaluation metrics, and datasets. For analyzing the progress in the video description task, a comprehensive survey is needed that covers all the phases of video description approaches with a special focus on recent deep learning approaches. In this work, we report a comprehensive survey on the phases of video description approaches, the dataset for video description, evaluation metrics, open competitions for motivating the research on the video description, open challenges in this field, and future research directions. In this survey, we cover the state-of-the-art approaches proposed for each and every dataset with their pros and cons. For the growth of this research domain, the availability of numerous benchmark dataset is a basic need. Further, we categorize all the dataset into two classes: open domain dataset and domain-specific dataset. A brief discussion of the pros and cons of automatic evaluation metrics and human evaluationis also done in this survey.
    [Show full text]
  • Reprint a Journal of © Wiley-VCH Verlag Gmbh & Co
    Reprint A Journal of © Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim www.chemcatchem.org DOI: 10.1002/cctc.201901084 Full Papers 1 2 3 Facile Synthesis of Fe/N/S-Doped Carbon Tubes as High- 4 Performance Cathode and Anode for Microbial Fuel Cells 5 6 Wei Yang,*[a] Jun Li,*[b] Linghan Lan,[b] Zhuo Li,[b] Wenli Wei,[c, d] Jia En Lu,[c] and 7 [c] 8 Shaowei Chen* 9 10 11 As arenewable energy technology, microbial fuel cell (MFC) has ahalf-wave potential of +0.81 Vvs. RHE and an electron 12 been attracting increasing attention in recent decades. How- transfer number of 3.98 at +0.6 Vvs. RHE. The Fe/N/S-doped 13 ever, practical applications of MFCs has been hampered by the carbon tubes also exhibited aremarkable performance as an 14 unsatisfactory electrode performance, in particular, at the MFC anode by facilitating bacterial growth and electron transfer 15 cathode. Herein, Fe/N/S-doped carbon hollow tubes were between the biofilm and electrode. In fact, an MFC based on 16 prepared by afacile two-stage procedure involving hydro- the carbon tubes as both cathode and anode showed a 17 thermal treatment and pyrolysis at controlled temperatures. markedly higher performance (maximum power density 18 Electrochemical studies showed that the obtained samples 479 WmÀ3)than the control MFC based on agraphene aerogel 19 exhibited an apparent electrocatalytic activity towards oxygen anode and Pt/C cathode (359 WmÀ3). These results suggest that 20 reduction reaction in both alkaline and acidic media, aperform- Fe/N/S-doped carbon composites can be used for the fabrica- 21 ance comparable to that of commercial Pt/C, and the sample tion of high-efficiency MFC electrodes.
    [Show full text]
  • Daily Life for the Common People of China, 1850 to 1950
    Daily Life for the Common People of China, 1850 to 1950 Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access China Studies published for the institute for chinese studies, university of oxford Edited by Micah Muscolino (University of Oxford) volume 39 The titles published in this series are listed at brill.com/chs Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access Daily Life for the Common People of China, 1850 to 1950 Understanding Chaoben Culture By Ronald Suleski leiden | boston Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access This is an open access title distributed under the terms of the prevailing cc-by-nc License at the time of publication, which permits any non-commercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. An electronic version of this book is freely available, thanks to the support of libraries working with Knowledge Unlatched. More information about the initiative can be found at www.knowledgeunlatched.org. Cover Image: Chaoben Covers. Photo by author. Library of Congress Cataloging-in-Publication Data Names: Suleski, Ronald Stanley, author. Title: Daily life for the common people of China, 1850 to 1950 : understanding Chaoben culture / By Ronald Suleski.
    [Show full text]
  • Download File
    On the Periphery of a Great “Empire”: Secondary Formation of States and Their Material Basis in the Shandong Peninsula during the Late Bronze Age, ca. 1000-500 B.C.E Minna Wu Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Graduate School of Arts and Sciences COLUMIBIA UNIVERSITY 2013 @2013 Minna Wu All rights reserved ABSTRACT On the Periphery of a Great “Empire”: Secondary Formation of States and Their Material Basis in the Shandong Peninsula during the Late Bronze-Age, ca. 1000-500 B.C.E. Minna Wu The Shandong region has been of considerable interest to the study of ancient China due to its location in the eastern periphery of the central culture. For the Western Zhou state, Shandong was the “Far East” and it was a vast region of diverse landscape and complex cultural traditions during the Late Bronze-Age (1000-500 BCE). In this research, the developmental trajectories of three different types of secondary states are examined. The first type is the regional states established by the Zhou court; the second type is the indigenous Non-Zhou states with Dong Yi origins; the third type is the states that may have been formerly Shang polities and accepted Zhou rule after the Zhou conquest of Shang. On the one hand, this dissertation examines the dynamic social and cultural process in the eastern periphery in relation to the expansion and colonization of the Western Zhou state; on the other hand, it emphasizes the agency of the periphery during the formation of secondary states by examining how the polities in the periphery responded to the advances of the Western Zhou state and how local traditions impacted the composition of the local material assemblage which lay the foundation for the future prosperity of the regional culture.
    [Show full text]
  • Tech4eva Tokyo Roadshow
    TECH4EVA ROADSHOW T HE CONNECTION TO TOKYO MAY 18 / 20 2021 The first Swiss program in the field of FemTech p. 02 The FemTech sector p. 03 Program p. 04 Tokyo Roadshow Selected Growth-stage start-ups pp. 11 Selected Projects and Early-stage start-ups pp. 15 pp. 19 Our partners www.tech4eva.ch The FemTech sector Releasing the power and well-being of half the planet’s population FemTech on the rise With the rapid rise and early successes of start-ups dedicated to women’s health, FemTech is becoming a hot topic and a promising asset class for investors. In 2019, the global FemTech market generated $ 820.6 million, with a market value estimated to be worth $ 50 billion by 2025 (Frost & Sullivan) Tech4Eva, the first FemTech accelerator in Switzerland, is a joint endeavour between the leading technology park in Switzerland, EPFL Innovation Park and health insurer Groupe Mutuel. Ferring Pharmaceuticals is also a key corporate sponsor of the program. 2 The program Tech4Eva Accelerator Program The program has the ambition to accelerate the growth of promising Femtech start-ups, and to create an innovation platform in Switzerland, where disruptive start-ups and projects from around the globe can meet and develop innovative solutions for improving or advancing technologies Lan Zuo Gillet relating to women’s health. It also aims EPFL Innovation Park to create a global FemTech community by connecting all stakeholders in different markets active in the sector. The first cohort of the program received over 110 early and growth stage start-ups applications from around the globe - 34 of those are Swiss-based - 70 of which are led by Nicolas Loeillot women founders.
    [Show full text]
  • Representing Talented Women in Eighteenth-Century Chinese Painting: Thirteen Female Disciples Seeking Instruction at the Lake Pavilion
    REPRESENTING TALENTED WOMEN IN EIGHTEENTH-CENTURY CHINESE PAINTING: THIRTEEN FEMALE DISCIPLES SEEKING INSTRUCTION AT THE LAKE PAVILION By Copyright 2016 Janet C. Chen Submitted to the graduate degree program in Art History and the Graduate Faculty of the University of Kansas in partial fulfillment of the requirements for the degree of Doctor of Philosophy. ________________________________ Chairperson Marsha Haufler ________________________________ Amy McNair ________________________________ Sherry Fowler ________________________________ Jungsil Jenny Lee ________________________________ Keith McMahon Date Defended: May 13, 2016 The Dissertation Committee for Janet C. Chen certifies that this is the approved version of the following dissertation: REPRESENTING TALENTED WOMEN IN EIGHTEENTH-CENTURY CHINESE PAINTING: THIRTEEN FEMALE DISCIPLES SEEKING INSTRUCTION AT THE LAKE PAVILION ________________________________ Chairperson Marsha Haufler Date approved: May 13, 2016 ii Abstract As the first comprehensive art-historical study of the Qing poet Yuan Mei (1716–97) and the female intellectuals in his circle, this dissertation examines the depictions of these women in an eighteenth-century handscroll, Thirteen Female Disciples Seeking Instructions at the Lake Pavilion, related paintings, and the accompanying inscriptions. Created when an increasing number of women turned to the scholarly arts, in particular painting and poetry, these paintings documented the more receptive attitude of literati toward talented women and their support in the social and artistic lives of female intellectuals. These pictures show the women cultivating themselves through literati activities and poetic meditation in nature or gardens, common tropes in portraits of male scholars. The predominantly male patrons, painters, and colophon authors all took part in the formation of the women’s public identities as poets and artists; the first two determined the visual representations, and the third, through writings, confirmed and elaborated on the designated identities.
    [Show full text]
  • Yi Ouyang Phone: 734-846-4782  E-Mail: [email protected]
    Yi Ouyang Phone: 734-846-4782 E-mail: [email protected] RESEARCH INTERESTS Cyber-physical systems Communication systems, queuing networks, networked control systems, autonomous vehicles, transportation systems, Internet of things. Dynamic decision-making Reinforcement learning, multi-armed bandits, dynamic scheduling, stochastic control, decentralized control, team theory. Game theory Dynamic stochastic games, mechanism design, electronic commerce. EDUCATION University of Michigan, Ann Arbor, MI Aug. 2010 to Dec. 2015 Ph.D. in Electrical Engineering: Systems Dissertation: On the interaction of information and decisions in dynamic networked systems Advisor: Prof. Demosthenis Teneketzis M.S. in Electrical Engineering: Systems National Taiwan University, Taipei, Taiwan Sep. 2005 to June 2009 B.S. in Electrical Engineering B.S. in Mathematics EXPERIENCE University of Southern California, Los Angeles, CA Jan. 2016 to present Postdoctoral Researcher Supervisors: Prof. Rahul Jain and Prof. Ashutosh Nayyar • Developed learning and optimization methods for stochastic dynamic systems. • Designed optimal decentralized controllers for systems connected with unreliable communication. University of Michigan, Ann Arbor, MI Aug. 2011 to Dec. 2015 Graduate Student Research Assistant Supervisor: Prof. Demosthenis Teneketzis • Developed and implemented adaptive sensing algorithms. • Developed optimal routing algorithms for decentralized queueing systems. • Designed efficient multiple access protocols for wireless communication. • Analyzed strategic behaviors using a dynamic game framework. National Taiwan University, Taipei, Taiwan Sep. 2006 to June 2008 Research Assistant Supervisor: Prof. Jiun-Ming Chen • Parallelized the General Number Field Sieve (GNFS) algorithm to factor modulus in RSA cryptosystem. AWARDS Engineering Graduate Symposium Technical Session Award, University of Michigan, 2012. Departmental Fellowship, EECS, University of Michigan, 2010. Government Scholarship to Study Abroad, Ministry of Education, Taiwan, 2010.
    [Show full text]
  • Names of Chinese People in Singapore
    101 Lodz Papers in Pragmatics 7.1 (2011): 101-133 DOI: 10.2478/v10016-011-0005-6 Lee Cher Leng Department of Chinese Studies, National University of Singapore ETHNOGRAPHY OF SINGAPORE CHINESE NAMES: RACE, RELIGION, AND REPRESENTATION Abstract Singapore Chinese is part of the Chinese Diaspora.This research shows how Singapore Chinese names reflect the Chinese naming tradition of surnames and generation names, as well as Straits Chinese influence. The names also reflect the beliefs and religion of Singapore Chinese. More significantly, a change of identity and representation is reflected in the names of earlier settlers and Singapore Chinese today. This paper aims to show the general naming traditions of Chinese in Singapore as well as a change in ideology and trends due to globalization. Keywords Singapore, Chinese, names, identity, beliefs, globalization. 1. Introduction When parents choose a name for a child, the name necessarily reflects their thoughts and aspirations with regards to the child. These thoughts and aspirations are shaped by the historical, social, cultural or spiritual setting of the time and place they are living in whether or not they are aware of them. Thus, the study of names is an important window through which one could view how these parents prefer their children to be perceived by society at large, according to the identities, roles, values, hierarchies or expectations constructed within a social space. Goodenough explains this culturally driven context of names and naming practices: Department of Chinese Studies, National University of Singapore The Shaw Foundation Building, Block AS7, Level 5 5 Arts Link, Singapore 117570 e-mail: [email protected] 102 Lee Cher Leng Ethnography of Singapore Chinese Names: Race, Religion, and Representation Different naming and address customs necessarily select different things about the self for communication and consequent emphasis.
    [Show full text]
  • A Practical Synthesis of Lrans-Resveratrol
    Indian Journ al or Chcmistry Vol. 418, Novcmber 2002, pp . 239S-2398 Note A practical synthesis of lra ns-resveratro l HO Zhen Lu Shen . Guang Lan Zhuo & Xua n Zhen Ji ang* Department of Chcmistry. Z hejiang University, Yu QU :lI1 Campus, OH Hangzhou, Zhcjiang. 3 10027 , P.R.China Receil'ed II Jalluary 2002; accepfed ( revised) 14 JUlie 2002 1 Thc to tal sy nthcs is of biological ly ac ti vc substance frallS­ 3,5-Dihyd roxybenzo ic ac id on treatment with al ka­ re svcratro l 1 has bce n dcscri bed wi th modcrate ovcrall y ield (3S.7 %). Starti ng frolll 3,S-d ihydroxybenzoic ac id, 3,S­ lin e dimeth yl sul fa te afforded meth yl 3,5-dimethoxy­ dimcthoxybcnzo nat c mcth y l cster is prcpared. The react ion of the benzoate 2 in good yield in one step. The un es teri fied estcr with hydrnine hydrate fol lowcd by oxidation with prod uct 3 obtained from thi s reacti on was esteri fied K, fFe(C )61 givcs the key intermediate 3,S-dilllethoxy­ by meth anol to provide more of compo un d 2. Subse­ benzaldehyde, which is condcnsed with diethyl(4-lllct hoxy­ benzy l)phosphonate to yield only fralls-3,S,4'-t rilllct hylstilbe ne. quent treatment of th e ester 2 with hydraz in e hydrate T hc sy nthe sis of fralls-rcsvera trol is complcted by the dcprotec­ afforded benzo hydraz ide 4. Oxid ati on of 4 wi th ti on reaction with BBr,ICH2C1 2.
    [Show full text]