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Table of Contents (Print) NEWSPAPER Reconstructed frequency-versus-time fingerprint of a single optical photon pulse measured by optical interference techniques. [Alex O. C. Davis et al., Phys. Rev. Lett. 121, 083602 (2018)] PHYSICAL REVIEW LETTERS Contents Articles published 18 August–24 August 2018 VOLUME 121, NUMBER 8 24 August 2018 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. Spin Polarization through Floquet Resonances in a Driven Central Spin Model ................................................................ 080401 Pieter W. Claeys, Stijn De Baerdemacker, Omar El Araby, and Jean-S´ebastien Caux Constraints on a Spin-Dependent Exotic Interaction between Electrons with Single Electron Spin Quantum Sensors .... 080402 Xing Rong, Man Jiao, Jianpei Geng, Bo Zhang, Tianyu Xie, Fazhan Shi, Chang-Kui Duan, Yi-Fu Cai, and Jiangfeng Du Cosmic Bell Test Using Random Measurement Settings from High-Redshift Quasars ...................................................... 080403 Dominik Rauch, Johannes Handsteiner, Armin Hochrainer, Jason Gallicchio, Andrew S. Friedman, Calvin Leung, Bo Liu, Lukas Bulla, Sebastian Ecker, Fabian Steinlechner, Rupert Ursin, Beili Hu, David Leon, Chris Benn, Adriano Ghedina, Massimo Cecconi, Alan H. Guth, David I. Kaiser, Thomas Scheidl, and Anton Zeilinger Test of Local Realism into the Past without Detection and Locality Loopholes ................................................................. 080404 Ming-Han Li, Cheng Wu, Yanbao Zhang, Wen-Zhao Liu, Bing Bai, Yang Liu, Weijun Zhang, Qi Zhao, Hao Li, Zhen Wang, Lixing You, W. J. Munro, Juan Yin, Jun Zhang, Cheng-Zhi Peng, Xiongfeng Ma, Qiang Zhang, Jingyun Fan, and Jian-Wei Pan Coalescence of Two Impurities in a Trapped One-dimensional Bose Gas .......................................................................... 080405 A. S. Dehkharghani, A. G. Volosniev, and N. T. Zinner Fundamental Limitations for Measurements in Quantum Many-Body Systems .................................................................. 080406 Thomas Barthel and Jianfeng Lu Divisibility and Information Flow Notions of Quantum Markovianity for Noninvertible Dynamical Maps ...................... 080407 Dariusz Chruściński, Ángel Rivas, and Erling Størmer Experimental Time-Resolved Interference with Multiple Photons of Different Colors ....................................................... 080501 Xu-Jie Wang, Bo Jing, Peng-Fei Sun, Chao-Wei Yang, Yong Yu, Vincenzo Tamma, Xiao-Hui Bao, and Jian-Wei Pan Binomial Spin Glass ............................................................................................................................................................... 080601 Mohammad-Sadegh Vaezi, Gerardo Ortiz, Martin Weigel, and Zohar Nussinov Thermodynamic Bound on Heat-to-Power Conversion ......................................................................................................... 080602 Rongxiang Luo, Giuliano Benenti, Giulio Casati, and Jiao Wang Gravitation and Astrophysics Constraining a Thin Dark Matter Disk with Gaia ............................................................................................................... 081101 Katelin Schutz, Tongyan Lin, Benjamin R. Safdi, and Chih-Liang Wu Constraints on Scattering of keV–TeV Dark Matter with Protons in the Early Universe ................................................... 081301 Vera Gluscevic and Kimberly K. Boddy Damped Perturbations in the No-Boundary State ................................................................................................................. 081302 J. Diaz Dorronsoro, J. J. Halliwell, J. B. Hartle, T. Hertog, O. Janssen, and Y. Vreys Emergent de Sitter Epoch of the Quantum Cosmos from Loop Quantum Cosmology ...................................................... 081303 Mehdi Assanioussi, Andrea Dapor, Klaus Liegener, and Tomasz Pawłowski (Continued Inside) This paper was highlighted in the APS publication Physics (physics.aps.org). By suggesting a few manuscripts each week, we hope to promote reading across fields. Please see our Announcement Phys. Rev. Lett. 98, 010001 (2007). Copyright 2018 American Physical Society 0031-9007(20180824)121:8;1-Z Contents (Continued) Correlation Function of High-Threshold Regions and Application to the Initial Small-Scale Clustering of Primordial Black Holes ................................................................................................................................................................................. 081304 Yacine Ali-Haïmoud Predictions for the Sky-Averaged Depth of the 21 cm Absorption Signal at High Redshift in Cosmologies with and without Nonbaryonic Cold Dark Matter ....................................................................................................................................... 081305 Stacy S. McGaugh Primordial Black Holes from Sound Speed Resonance during Inflation ............................................................................. 081306 Yi-Fu Cai, Xi Tong, Dong-Gang Wang, and Sheng-Feng Yan Low-Mass Dark Matter Search with the DarkSide-50 Experiment ...................................................................................... 081307 P. Agnes et al. (DarkSide Collaboration) Elementary Particles and Fields All-Loop Singularities of Scattering Amplitudes in Massless Planar Theories .................................................................... 081601 Igor Prlina, Marcus Spradlin, and Stefan Stanojevic Searchpffiffiffi for Low-Mass Dijet Resonances Using Trigger-Level Jets with the ATLAS Detector in pp Collisions at s ¼ 13 TeV .................................................................................................................................................................... 081801 M. Aaboud et al. (ATLAS Collaboration) 0 − þ þ 0 þ Observation of the Semileptonic Decay D → a0ð980Þ e νe and Evidence for D → a0ð980Þ e νe .............................. 081802 M. Ablikim et al. (BESIII Collaboration) Diffractive Electron-Nucleus Scattering and Ancestry in Branching Random Walks .......................................................... 082001 A. H. Mueller and S. Munier Nuclear Physics pffiffiffiffiffiffiffiffi p þ s ¼ 8 16 Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity Pb Collisions at NN . TeV ................... 082301 A. M. Sirunyan et al. (CMS Collaboration) Finite-Temperature Relativistic Nuclear Field Theory: An Application to the Dipole Response ........................................ 082501 Elena Litvinova and Herlik Wibowo Localizing the Shape Transition in Neutron-Deficient Selenium .......................................................................................... 082502 J. Henderson, C. Y. Wu, J. Ash, P. C. Bender, B. Elman, A. Gade, M. Grinder, H. Iwasaki, E. Kwan, B. Longfellow, T. Mijatović, D. Rhodes, M. Spieker, and D. Weisshaar Atomic, Molecular, and Optical Physics Ultrahigh-Density Spin-Polarized H and D Observed via Magnetization Quantum Beats .................................................. 083001 Dimitris Sofikitis, Chrysovalantis S. Kannis, Gregoris K. Boulogiannis, and T. Peter Rakitzis Determination of Interatomic Potentials of He2, Ne2, Ar2, and H2 by Wave Function Imaging ....................................... 083002 S. Zeller, M. Kunitski, J. Voigtsberger, M. Waitz, F. Trinter, S. Eckart, A. Kalinin, A. Czasch, L. Ph. H. Schmidt, T. Weber, M. Schöffler, T. Jahnke, and R. Dörner Λ-Enhanced Imaging of Molecules in an Optical Trap ........................................................................................................ 083201 Lawrence W. Cheuk, Loïc Anderegg, Benjamin L. Augenbraun, Yicheng Bao, Sean Burchesky, Wolfgang Ketterle, and John M. Doyle Mutual Neutralization of O− with Oþ and Nþ at Subthermal Collision Energies .............................................................. 083401 N. de Ruette, A. Dochain, T. Launoy, R. F. Nascimento, M. Kaminska, M. H. Stockett, N. Vaeck, H. T. Schmidt, H. Cederquist, and X. Urbain Quantum Field Theory of Nematic Transitions in Spin-Orbit-Coupled Spin-1 Polar Bosons ............................................ 083402 E. J. König and J. H. Pixley Cavity-Enhanced Raman Emission from a Single Color Center in a Solid ......................................................................... 083601 Shuo Sun, Jingyuan Linda Zhang, Kevin A. Fischer, Michael J. Burek, Constantin Dory, Konstantinos G. Lagoudakis, Yan-Kai Tzeng, Marina Radulaski, Yousif Kelaita, Amir Safavi-Naeini, Zhi-Xun Shen, Nicholas A. Melosh, Steven Chu, Marko Lončar, and Jelena Vučković Measuring the Single-Photon Temporal-Spectral Wave Function ......................................................................................... 083602 Alex O. C. Davis, Val´erian Thiel, Michał Karpiński, and Brian J. Smith (Continued on Preceding Page) This paper was highlighted in the APS publication Physics (physics.aps.org). By suggesting a few manuscripts each week, we hope to promote reading across fields. Please see our Announcement Phys. Rev. Lett. 98, 010001 (2007) Contents (Continued) Nonadditivity of Optical and Casimir-Polder Potentials ....................................................................................................... 083603 Sebastian Fuchs, Robert Bennett, Roman V. Krems, and Stefan Yoshi Buhmann Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. Nonlinear Spectroscopy with X-Ray Two-Photon Absorption in Metallic Copper ............................................................. 083901 Kenji Tamasaku, Eiji Shigemasa, Yuichi Inubushi,
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