Quantum Optics Metamaterials
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Nori, Franco; Et Al. Source: PHYSICAL REVIEW B Volume: 87 Issue: 23 Article Number: 235410 DOI: 10.1103/Physrevb.87.235410 Published: JUN 10 2013
Title: Quantum metamaterial without local control Author(s): Shvetsov, A.; Satanin, A. M.; Nori, Franco; et al. Source: PHYSICAL REVIEW B Volume: 87 Issue: 23 Article Number: 235410 DOI: 10.1103/PhysRevB.87.235410 Published: JUN 10 2013 Title: Full Numerical Simulations of Dynamical Response in Superconducting Single-Photon Detectors Author(s): Ota, Yukihiro; Kobayashi, Keita; Machida, Masahiko; et al. Source: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Volume: 23 Issue: 3 Article Number: 2201105 DOI: 10.1109/TASC.2013.2248871 Part: 1 Published: JUN 2013 Title: Quantum anti-Zeno effect without wave function reduction Author(s): Ai, Qing; Xu, Dazhi; Yi, Su; et al. Source: SCIENTIFIC REPORTS Volume: 3 Article Number: 1752 DOI: 10.1038/srep01752 Published: MAY 8 2013 Title: Hybrid quantum circuit consisting of a superconducting flux qubit coupled to a spin ensemble and a transmission-line resonator Author(s): Xiang, Ze-Liang; Lu, Xin-You; Li, Tie-Fu; et al. Source: PHYSICAL REVIEW B Volume: 87 Issue: 14 Article Number: 144516 DOI: 10.1103/PhysRevB.87.144516 Published: APR 29 2013 Title: Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems Author(s): Xiang, Ze-Liang; Ashhab, Sahel; You, J. Q.; et al. Source: REVIEWS OF MODERN PHYSICS Volume: 85 Issue: 2 Pages: 623-653 DOI: 10.1103/RevModPhys.85.623 Published: APR 9 2013 Title: Nonclassical microwave radiation from the dynamical Casimir effect Author(s): Johansson, J. R.; Johansson, G.; Wilson, C. M.; et al. Source: PHYSICAL REVIEW A Volume: 87 Issue: 4 Article Number: 043804 DOI: 10.1103/PhysRevA.87.043804 Published: APR 4 2013 Title: QuTiP 2: A Python framework for the dynamics of open quantum systems Author(s): Johansson, J. -
Quantum Metamaterials in the Microwave and Optical Ranges Alexandre M Zagoskin1,2* , Didier Felbacq3 and Emmanuel Rousseau3
Zagoskin et al. EPJ Quantum Technology (2016)3:2 DOI 10.1140/epjqt/s40507-016-0040-x R E V I E W Open Access Quantum metamaterials in the microwave and optical ranges Alexandre M Zagoskin1,2* , Didier Felbacq3 and Emmanuel Rousseau3 *Correspondence: [email protected] Abstract 1Department of Physics, Loughborough University, Quantum metamaterials generalize the concept of metamaterials (artificial optical Loughborough, LE11 3TU, United media) to the case when their optical properties are determined by the interplay of Kingdom quantum effects in the constituent ‘artificial atoms’ with the electromagnetic field 2Theoretical Physics and Quantum Technologies Department, Moscow modes in the system. The theoretical investigation of these structures demonstrated Institute for Steel and Alloys, that a number of new effects (such as quantum birefringence, strongly nonclassical Moscow, 119049, Russia states of light, etc.) are to be expected, prompting the efforts on their fabrication and Full list of author information is available at the end of the article experimental investigation. Here we provide a summary of the principal features of quantum metamaterials and review the current state of research in this quickly developing field, which bridges quantum optics, quantum condensed matter theory and quantum information processing. 1 Introduction The turn of the century saw two remarkable developments in physics. First, several types of scalable solid state quantum bits were developed, which demonstrated controlled quan- tum coherence in artificial mesoscopic structures [–] and eventually led to the devel- opment of structures, which contain hundreds of qubits and show signatures of global quantum coherence (see [, ] and references therein). In parallel, it was realized that the interaction of superconducting qubits with quantized electromagnetic field modes re- produces, in the microwave range, a plethora of effects known from quantum optics (in particular, cavity QED) with qubits playing the role of atoms (‘circuit QED’, [–]). -
On the Nature of Electric Charge
Vol. 9(4), pp. 54-60, 28 February, 2014 DOI: 10.5897/IJPS2013.4091 ISSN 1992 - 1950 International Journal of Physical Copyright © 2014 Author(s) retain the copyright of this article Sciences http://www.academicjournals.org/IJPS Full Length Research Paper On the nature of electric charge Jafari Najafi, Mahdi 1730 N Lynn ST apt A35, Arlington, VA 22209 USA. Received 10 December, 2013; Accepted 14 February, 2014 A few hundred years have passed since the discovery of electricity and electromagnetic fields, formulating them as Maxwell's equations, but the nature of an electric charge remains unknown. Why do particles with the same charge repel and opposing charges attract? Is the electric charge a primary intrinsic property of a particle? These questions cannot be answered until the nature of the electric charge is identified. The present study provides an explicit description of the gravitational constant G and the origin of electric charge will be inferred using generalized dimensional analysis. Key words: Electric charge, gravitational constant, dimensional analysis, particle mass change. INTRODUCTION The universe is composed of three basic elements; parameters. This approach is of great generality and mass-energy (M), length (L), and time (T). Intrinsic mathematical simplicity that simply and directly properties are assigned to particles, including mass, postulates a hypothesis for the nature of the electric electric charge, and spin, and their effects are applied in charge. Although the final formula is a guesswork based the form of physical formulas that explicitly address on dimensional analysis of electric charges, it shows the physical phenomena. The meaning of some particle existence of consistency between the final formula and properties remains opaque. -
Modeling Optical Metamaterials with Strong Spatial Dispersion
Fakultät für Physik Institut für theoretische Festkörperphysik Modeling Optical Metamaterials with Strong Spatial Dispersion M. Sc. Karim Mnasri von der KIT-Fakultät für Physik des Karlsruher Instituts für Technologie (KIT) genehmigte Dissertation zur Erlangung des akademischen Grades eines DOKTORS DER NATURWISSENSCHAFTEN (Dr. rer. nat.) Tag der mündlichen Prüfung: 29. November 2019 Referent: Prof. Dr. Carsten Rockstuhl (Institut für theoretische Festkörperphysik) Korreferent: Prof. Dr. Michael Plum (Institut für Analysis) KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft Erklärung zur Selbstständigkeit Ich versichere, dass ich diese Arbeit selbstständig verfasst habe und keine anderen als die angegebenen Quellen und Hilfsmittel benutzt habe, die wörtlich oder inhaltlich über- nommenen Stellen als solche kenntlich gemacht und die Satzung des KIT zur Sicherung guter wissenschaftlicher Praxis in der gültigen Fassung vom 24. Mai 2018 beachtet habe. Karlsruhe, den 21. Oktober 2019, Karim Mnasri Als Prüfungsexemplar genehmigt von Karlsruhe, den 28. Oktober 2019, Prof. Dr. Carsten Rockstuhl iv To Ouiem and Adam Thesis abstract Optical metamaterials are artificial media made from subwavelength inclusions with un- conventional properties at optical frequencies. While a response to the magnetic field of light in natural material is absent, metamaterials prompt to lift this limitation and to exhibit a response to both electric and magnetic fields at optical frequencies. Due tothe interplay of both the actual shape of the inclusions and the material from which they are made, but also from the specific details of their arrangement, the response canbe driven to one or multiple resonances within a desired frequency band. With such a high number of degrees of freedom, tedious trial-and-error simulations and costly experimen- tal essays are inefficient when considering optical metamaterials in the design of specific applications. -
Electromagnetism
Electromagnetism Electric Charge Two types: positive and negative Like charges repel, opposites attract Forces come in a matched pair Each charge pushes or pulls on the other Forces have equal magnitudes and opposite directions Forces increase with decreasing separation Charge is quantized Charge is an intrinsic property of matter Electrons are negatively charged (-1.6 x 10-19 coulomb’s each) Protons are positively charged (+1.6 x 10-19 coulomb’s each) Net charge is the sum of an object’s charges Most objects have zero net charge (neutral – equal numbers of + and -) Electric Fields Charges push on each other through empty space Charge one creates an “electric field” This electric field pushes on charge two An electric field is a structure in space that pushes on electric charge The magnitude of the field is proportional to the magnitude of the force on a test charge The direction of the field is the direction of the force on a positive test charge Magnetic Poles Two Types: north and south Like poles repel, opposites attract Forces come in matched pairs Forces increase with decreasing separation Analogous to electric charges EXCEPT: No isolated magnetic poles have ever been found! Net pole on an object is always zero! Most atoms are magnetic, but most materials are not Atomic magnetism is perfectly cancelled Material is indifferent to nearby magnetic poles Some materials do not have full cancellation Ferromagnetic materials respond to magnetic poles Magnetic Fields A magnetic field is a structure in space that pushes on magnetic poles -
Redefining Metrics in Near-Term Devices for Quantum Information
Mo01 Redefining metrics in near-term devices for quantum information processing Antonio C´orcoles IBM E-mail: [email protected] The outstanding progress in experimental quantum computing over the last couple of decades has pushed multi-qubit gate error rates in some platforms well below 1%. How- ever, as the systems have grown in size and complexity so has the richness of the inter- actions within them, making the meaning of gate fidelity fade when taken isolated from its environment. In this talk I will discuss this topic and offer alternatives to benchmark the performance of small quantum processors for near-term applications. Mo02 Efficient simulation of quantum error correction under coherent error based on non-unitary free-fermionic formalism Yasunari Suzuki1,2, Keisuke Fujii3,4, and Masato Koashi1,2 1Department of Applied Physics, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan 2Photon Science Center, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan 3 Department of Physics, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan 4JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan In order to realize fault-tolerant quantum computation, tight evaluation of error threshold under practical noise models is essential. While non-Clifford noise is ubiquitous in experiments, the error threshold under non-Clifford noise cannot be efficiently treated with known approaches. We construct an efficient scheme for estimating the error threshold of one-dimensional quantum repetition code under non-Clifford noise[1]. -
F = BIL (F=Force, B=Magnetic Field, I=Current, L=Length of Conductor)
Magnetism Joanna Radov Vocab: -Armature- is the power producing part of a motor -Domain- is a region in which the magnetic field of atoms are grouped together and aligned -Electric Motor- converts electrical energy into mechanical energy -Electromagnet- is a type of magnet whose magnetic field is produced by an electric current -First Right-Hand Rule (delete) -Fixed Magnet- is an object made from a magnetic material and creates a persistent magnetic field -Galvanometer- type of ammeter- detects and measures electric current -Magnetic Field- is a field of force produced by moving electric charges, by electric fields that vary in time, and by the 'intrinsic' magnetic field of elementary particles associated with the spin of the particle. -Magnetic Flux- is a measure of the amount of magnetic B field passing through a given surface -Polarized- when a magnet is permanently charged -Second Hand-Right Rule- (delete) -Solenoid- is a coil wound into a tightly packed helix -Third Right-Hand Rule- (delete) Major Points: -Similar magnetic poles repel each other, whereas opposite poles attract each other -Magnets exert a force on current-carrying wires -An electric charge produces an electric field in the region of space around the charge and that this field exerts a force on other electric charges placed in the field -The source of a magnetic field is moving charge, and the effect of a magnetic field is to exert a force on other moving charge placed in the field -The magnetic field is a vector quantity -We denote the magnetic field by the symbol B and represent it graphically by field lines -These lines are drawn ⊥ to their entry and exit points -They travel from N to S -If a stationary test charge is placed in a magnetic field, then the charge experiences no force. -
Electromagnetic Waves in Josephson Qubit Lines
Phys. Status Solidi B 246, No. 5, 955–960 (2009) / DOI 10.1002/pssb.200881568 p s sb solidi status www.pss-b.com physica Quantum metamaterials: basic solid state physics Electromagnetic waves in Josephson qubit lines A. M. Zagoskin1,2,3*, A. L. Rakhmanov1,4, Sergey Savel’ev1,2, and Franco Nori1,5 1 Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, 351-0198, Japan 2 Department of Physics, Loughborough University, Loughborough LE11 3TU, United Kingdom 3 Physics and Astronomy Department, The University of British Columbia, Vancouver, B.C., V6T 1Z1, Canada 4 Institute for Theoretical and Applied Electrodynamics RAS, 125412 Moscow, Russia 5 Department of Physics, Center for Theoretical Physics, Applied Physics Program, Center for the Study of Complex Systems, University of Michigan, Ann Arbor, MI 48109-1040, USA Received 15 October 2008, revised 4 February 2009, accepted 4 February 2009 Published online 3 April 2009 PACS 03.67.–a, 41.20.Jb, 82.25.Cp ∗ Corresponding author: e-mail [email protected] We consider the propagation of a classical electromagnetic oscillating bandgap. Similar behaviour is expected from a wave through a transmission line, formed by identical super- transmission line formed by flux qubits. The key ingredient conducting charge qubits inside a superconducting resonator. of these effects is that the optical properties of the Josephson Since the qubits can be in a coherent superposition of quan- transmission line are controlled by the quantum coherent state tum states, we show that such a system demonstrates interest- of the qubits. ing new effects, such as a “breathing” photonic crystal with an © 2009 WILEY-VCH Verlag GmbH & Co. -
Magnetically Induced Transparency of a Quantum Metamaterial Composed of Twin flux Qubits
ARTICLE DOI: 10.1038/s41467-017-02608-8 OPEN Magnetically induced transparency of a quantum metamaterial composed of twin flux qubits K.V. Shulga 1,2,3,E.Il’ichev4, M.V. Fistul 2,5, I.S. Besedin2, S. Butz1, O.V. Astafiev2,3,6, U. Hübner 4 & A.V. Ustinov1,2 Quantum theory is expected to govern the electromagnetic properties of a quantum metamaterial, an artificially fabricated medium composed of many quantum objects acting as 1234567890():,; artificial atoms. Propagation of electromagnetic waves through such a medium is accompanied by excitations of intrinsic quantum transitions within individual meta-atoms and modes corresponding to the interactions between them. Here we demonstrate an experiment in which an array of double-loop type superconducting flux qubits is embedded into a microwave transmission line. We observe that in a broad frequency range the transmission coefficient through the metamaterial periodically depends on externally applied magnetic field. Field-controlled switching of the ground state of the meta-atoms induces a large suppression of the transmission. Moreover, the excitation of meta-atoms in the array leads to a large resonant enhancement of the transmission. We anticipate possible applications of the observed frequency-tunable transparency in superconducting quantum networks. 1 Physikalisches Institut, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany. 2 Russian Quantum Center, National University of Science and Technology MISIS, Moscow, 119049, Russia. 3 Moscow Institute of Physics and Technology, Dolgoprudny, 141700 Moscow region, Russia. 4 Leibniz Institute of Photonic Technology, PO Box 100239, D-07702 Jena, Germany. 5 Center for Theoretical Physics of Complex Systems, Institute for Basic Science, Daejeon, 34051, Republic of Korea. -
Electric Charge
Electric Charge • Electric charge is a fundamental property of atomic particles – such as electrons and protons • Two types of charge: negative and positive – Electron is negative, proton is positive • Usually object has equal amounts of each type of charge so no net charge • Object is said to be electrically neutral Charged Object • Object has a net charge if two types of charge are not in balance • Object is said to be charged • Net charge is always small compared to the total amount of positive and negative charge contained in an object • The net charge of an isolated system remains constant Law of Electric Charges • Charged objects interact by exerting forces on one another • Law of Charges: Like charges repel, and opposite charges attract • The standard unit (SI) of charge is the Coulomb (C) Electric Properties • Electrical properties of materials such as metals, water, plastic, glass and the human body are due to the structure and electrical nature of atoms • Atoms consist of protons (+), electrons (-), and neutrons (electrically neutral) Atom Schematic view of an atom • Electrically neutral atoms contain equal numbers of protons and electrons Conductors and Insulators • Atoms combine to form solids • Sometimes outermost electrons move about the solid leaving positive ions • These mobile electrons are called conduction electrons • Solids where electrons move freely about are called conductors – metal, body, water • Solids where charge can’t move freely are called insulators – glass, plastic Charging Objects • Only the conduction -
Dispersive Response of a Disordered Superconducting Quantum Metamaterial
Photonics 2015, 2, 449-458; doi:10.3390/photonics2020449 OPEN ACCESS photonics ISSN 2304-6732 www.mdpi.com/journal/photonics Article Dispersive Response of a Disordered Superconducting Quantum Metamaterial Dmitriy S. Shapiro 1;2;3;*, Pascal Macha 4;5, Alexey N. Rubtsov 1;3 and Alexey V. Ustinov 1;4;6 1 Russian Quantum Center, Novaya St. 100, Skolkovo, Moscow region 143025, Russia; E-Mail: [email protected] (A.N.R.); [email protected] (A.V.U.) 2 Kotel’nikov Institute of Radio Engineering and Electronics of the Russian Academie of Sciences, Mokhovaya 11/7, Moscow 125009, Russia 3 Center of Fundamental and Applied Research, N.L. Dukhov All-Russia Institute of Science and Research, Sushchevskaya 22, Moscow 123055, Russia 4 Physikalisches Institut, Karlsruhe Institute of Technology, Karlsruhe D-76128, Germany; E-Mail: [email protected] 5 ARC Centre for Engineered Quantum Systems, University of Queensland, Brisbane, Queensland 4072, Australia 6 National University of Science and Technology MISIS, Leninsky prosp. 4, Moscow 119049, Russia * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +7-495-629-34-59 Received: 8 April 2015 / Accepted: 23 April 2015 / Published: 27 April 2015 Abstract: We consider a disordered quantum metamaterial formed by an array of superconducting flux qubits coupled to microwave photons in a cavity. We map the system on the Tavis-Cummings model accounting for the disorder in frequencies of the qubits. The complex transmittance is calculated with the parameters taken from state-of-the-art experiments. We demonstrate that photon phase shift measurements allow to distinguish individual resonances in the metamaterial with up to 100 qubits, in spite of the decoherence spectral width being remarkably larger than the effective coupling constant. -
Quantum Engineering
QUANTUM ENGINEERING Quantum engineering – the design and fabrication of quantum coherent structures – has emerged as a field in physics with important potential applications. This book provides a self-contained presentation of the theoretical methods and experimental results in quantum engineering. The book covers such topics as the quantum theory of electric circuits; theoretical methods of quantum optics in application to solid-state circuits; the quantum theory of noise, decoherence and measurements; Landauer formalism for quantum trans- port; the physics of weak superconductivity; and the physics of a 2-dimensional electron gas in semiconductor heterostructures. The theory is complemented by up-to-date experimental data to help put it into context. Aimed at graduate students in physics, the book will enable readers to start their own research and apply the theoretical methods and results to their current experimental situation. a. m. zagoskin is a Lecturer in Physics at Loughborough University, UK. His research interests include the theory of quantum information processing in solid-state devices, mesoscopic superconductivity, mesoscopic transport, quantum statistical physics and thermodynamics. QUANTUM ENGINEERING Theory and Design of Quantum Coherent Structures A. M. ZAGOSKIN Loughborough University cambridge university press Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, São Paulo, Delhi, Tokyo, Mexico City Cambridge University Press The Edinburgh Building, Cambridge CB2 8RU, UK Published in the United States of America by Cambridge University Press, New York www.cambridge.org Informationonthistitle:www.cambridge.org/9780521113694 © A. M. Zagoskin 2011 This publication is in copyright. Subject to statutory exception and to the provisions of relevant collective licensing agreements, no reproduction of any part may take place without the written permission of Cambridge University Press.