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APS » Journals » Physical Review A
Physical Review A
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About Physical Review A
Physical Review A provides a dependable resource of worldwide developments in the rapidly evolving area of atomic, molecular, and optical physics and related fundamental concepts. The journal contains articles on quantum mechanics including quantum information theory, atomic and molecular structure and dynamics, collisions and interactions (including interactions with surfaces and solids), clusters (including fullerenes), atomic and molecular processes in external fields, matter waves (including Bose-Einstein condensation), and optics, both quantum and classical. More...
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Kaleidoscope
Image from "Bound states in the one-dimensional two-particle Hubbard model with an impurity." [J. M. Zhang, Daniel Braak, and Marcus Kollar, Phys. Rev. A 87, 023613 (2013) ] Read Article | More Kaleidoscope Images
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Experimental characterization of Gaussian quantum discord generated by four-wave mixing We experimentally determine the Gaussian quantum discord present in two-mode squeezed vacuum generated by a four-wave mixing process in hot rubidium vapor. The frequency spectra of the discord as well as the quantum and classical mutual information are also measured. In addition, the effects of symm...
[Phys. Rev. A 87, 010101 (2013)] Published Wed Jan 16, 2013
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Introducing Mobile Subscriptions for APS Journals March 12, 2013 Readers can now conveniently access APS journals from home, on mobile devices, or while traveling by linking their institution’s subscriptions to their personal APS Journal Account. To link the subscriptions, simply click on the new Go Mobile! button that appears on article pages when accessing the journals from your institution.
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Physics: Accelerating the Stability of Lasers February 21, 2013
By measuring the inertial forces that act on a laser system, researchers have been able to increase the stability of frequency emission by an order of magnitude over previous methods. [Synopsis on Phys. Rev. A 87, 023829 (2013)] Read Article | More Synopses |
APS Announces 142 New Outstanding Referees for 2013 February 6, 2013 The editors of the APS journals have selected 142 new Outstanding Referees for 2013, out of more than 60,000 currently active referees. Initiated in 2008, the highly selective Outstanding Referee program recognizes scientists who have been exceptionally helpful in assessing manuscripts for publication in the APS journals. Selections are based on two decades of records on the number, quality, and timeliness of referee reports. The 2013 honorees come from 27 different countries, with large contingents from the US, Germany, UK, Canada, and France. The decisions were difficult and there are many excellent referees who have yet to be recognized. By means of the program, APS expresses appreciation to all referees, whose efforts in peer review not only keep the standards of the journals at a high level, but in many cases also help authors to improve the quality and readability of their articles—even those that are not published by APS. For more information and a listing of all Outstanding Referees, please visit publish.aps.org/OutstandingReferees. More News/Announcements
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Physics: Quantum Chaos on Display January 22, 2013
Spin-orbit-coupled cold atomic gases are proposed as a model system for observing the signatures of quantum chaos. [Viewpoint on Phys. Rev. A 87, 013624 (2013)] Read Article | More viewpoints |
APS Partners with ORCID For Launch October 16, 2012 Today ORCID opened its registry allowing researchers in all fields and from around the world to distinguish themselves by registering for their own unique identifier. APS has been a long-time supporter of ORCID and, as one of the official Launch Partners, we have updated our author profile application so that authors may register their ORCID within our database of authors and referees. Widespread adoption of ORCID identifiers will improve the scholarly record and help researchers receive proper credit for all of their contributions. To get started, simply visit the APS Author Profile application. More News/Announcements
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2012 Nobel Prize in Physics: Quantum Mechanics of Photons and Atoms October 9, 2012 The APS congratulates Serge Haroche and David WIneland for their 2012 Nobel Prize in Physics. They and their collaborators have made significant advances in the realization of quantum phenomena with many beautiful experiments. Their ability to manipulate atoms and photons to demonstrate fundamental aspects of quantum physics has been documented in many journal articles. We are very pleased that much of this seminal work has been published in the APS journals Physical Review Letters, Physical Review A, and Reviews of Modern Physics. To honor these laureates and their collaborators, we have made freely available five of their many APS publications that demonstrate some of the key insights of their pioneering work. Read More | More News/Announcements
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New Saved Search Feature for APS Journals July 12, 2012 The American Physical Society is pleased to announce the availability of a new "Saved Search" feature on our journal platform. With Saved Searches, you can receive daily updates based on any search criteria available in our search engine. Use them to track specific keywords, the publications of your colleagues at your institution, new publications that cite your work (if your name is unique enough), and much more. You may choose to receive your updates via email or RSS feeds. To save a search, first log in using your APS Journal account, do a search, and then simply save it on the search results page. More News/Announcements
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Editorial: Renewed Standards for Rapid Communications in Physical Review A May 1, 2012 In 1981, the Physical Review introduced Rapid Communications “intended for the accelerated publication of important new results of experimental or theoretical research.” Obviously, many things have changed over the years. The advent of email and the Web has transformed the communication of information with almost instantaneous transmission and broad availability. For this reason, the rapidity of publication, while still important, is less critical than it was 30 years ago; what really defines a Rapid Communication today is the publication of important new results. While we have implicitly focused more and more on this aspect over the past years, we will now do so explicitly to ensure that we publish only the most significant papers in the Rapid Communications section. We ask for the assistance and cooperation of all those involved — authors, referees, and editors.
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Recently published Rapid Communications in Physical Review A.
- Fundamental concepts
- Quantum information
- Atomic and molecular structure and dynamics
- Atomic and molecular collisions and interactions
| - Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
- Matter waves and collective properties of cold atoms and molecules
- Quantum optics, physics of lasers, nonlinear optics, classical optics
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Fundamental concepts
Quantum state tomography by continuous measurement and compressed sensing
A. Smith, C. A. Riofrío, B. E. Anderson, H. Sosa-Martinez, I. H. Deutsch, and P. S. Jessen
The need to perform quantum state tomography on ever-larger systems has spurred a search for methods that yield good estimates from incomplete data. We study the performance of compressed sensing (CS) and least squares (LS) estimators in a fast protocol based on continuous measurement on an ensemble... [Phys. Rev. A 87, 030102 (2013)] Published Mon Mar 11, 2013
Non-Markovian master equations from piecewise dynamics
Bassano Vacchini
We construct a large class of completely positive and trace-preserving non-Markovian dynamical maps for an open quantum system. These maps arise from a piecewise dynamics for statistical operators characterized by a continuous time evolution interrupted by jumps, randomly distributed in time and des... [Phys. Rev. A 87, 030101 (2013)] Published Fri Mar 8, 2013
Calculation of the parity- and time-reversal-violating interaction in 225RaO
A. D. Kudashov, A. N. Petrov, L. V. Skripnikov, N. S. Mosyagin, A. V. Titov, and V. V. Flambaum
The ten-electron generalized relativistic effective core potential and the corresponding correlation spin-orbital basis sets are generated for the Ra atom and the relativistic coupled-cluster calculations for the RaO molecule are performed. The main goal of the study is to evaluate the T,P-odd param... [Phys. Rev. A 87, 020102 (2013)] Published Fri Feb 15, 2013
Einstein-Podolsky-Rosen steering: Closing the detection loophole with non-maximally-entangled states and arbitrary low efficiency
Giuseppe Vallone
Quantum steering inequalities allow to demonstrate the presence of entanglement between two parties when one of the two measurement devices is not trusted. Here we show that quantum steering can be demonstrated for an arbitrary low detection efficiency by using two-qubit non-maximally-entangled stat... [Phys. Rev. A 87, 020101 (2013)] Published Wed Feb 13, 2013
Twin inequality for fully contextual quantum correlations
Adán Cabello
Quantum mechanics exhibits a very peculiar form of contextuality. Identifying and connecting the simplest scenarios in which more general theories can or cannot be more contextual than quantum mechanics is a fundamental step in the quest for the principle that singles out quantum contextuality. The ... [Phys. Rev. A 87, 010104 (2013)] Published Wed Jan 30, 2013
Non-Markovianity of local dephasing channels and time-invariant discord
P. Haikka, T. H. Johnson, and S. Maniscalco
We study non-Markovianity and information flow for qubits experiencing local dephasing with an Ohmic class spectrum. We demonstrate the existence of a temperature-dependent critical value of the Ohmicity parameter s for the onset of non-Markovianity and give a physical interpretation of this phenome... [Phys. Rev. A 87, 010103 (2013)] Published Thu Jan 24, 2013
Tests of local position invariance using continuously running atomic clocks
Steven Peil, Scott Crane, James L. Hanssen, Thomas B. Swanson, and Christopher R. Ekstrom
Tests of local position invariance (LPI) made by comparing the relative redshift of atomic clocks based on different atoms have been carried out for a variety of pairs of atomic species. In most cases, several absolute frequency measurements per year are used to look for an annual signal, resulting ... [Phys. Rev. A 87, 010102 (2013)] Published Tue Jan 22, 2013
Experimental characterization of Gaussian quantum discord generated by four-wave mixing
Ulrich Vogl, Ryan T. Glasser, Quentin Glorieux, Jeremy B. Clark, Neil V. Corzo, and Paul D. Lett
We experimentally determine the Gaussian quantum discord present in two-mode squeezed vacuum generated by a four-wave mixing process in hot rubidium vapor. The frequency spectra of the discord as well as the quantum and classical mutual information are also measured. In addition, the effects of symm... [Phys. Rev. A 87, 010101 (2013)] Published Wed Jan 16, 2013
Quantum information
Fault tolerance of quantum low-density parity check codes with sublinear distance scaling
Alexey A. Kovalev and Leonid P. Pryadko
We study the fault tolerance of quantum low-density parity check (LDPC) codes, such as generalized toric codes with a finite rate suggested by Tillich and Zémor [in ISIT 2009: IEEE International Symposium on Information Theory (IEEE, New York, 2009)]. We show that any family of quantum LDPC codes wh... [Phys. Rev. A 87, 020304 (2013)] Published Thu Feb 28, 2013
Security of continuous-variable quantum cryptography with Gaussian postselection
Nathan Walk, Timothy C. Ralph, Thomas Symul, and Ping Koy Lam
We extend the security analysis of continuous variable quantum-key-distribution protocols using a family of post selection schemes to account for arbitrary eavesdropping attacks. We show that the postselection protocol is equivalent to a virtual entanglement-based protocol including a distillation s... [Phys. Rev. A 87, 020303 (2013)] Published Thu Feb 21, 2013
Relationship between semi- and fully-device-independent protocols
Hong-Wei Li, Piotr Mironowicz, Marcin Pawłowski, Zhen-Qiang Yin, Yu-Chun Wu, Shuang Wang, Wei Chen, Hong-Gang Hu, Guang-Can Guo, and Zheng-Fu Han
We study the relation between semi- and fully-device-independent protocols. As a tool, we use the correspondence between Bell inequalities and dimension witnesses. We present a method for converting the former into the latter, and vice versa. This relation provides us with interesting results for bo... [Phys. Rev. A 87, 020302 (2013)] Published Thu Feb 14, 2013
Cross time-bin photonic entanglement for quantum key distribution
A. Martin, F. Kaiser, A. Vernier, A. Beveratos, V. Scarani, and S. Tanzilli
We report a fully fibered source emitting cross time-bin-entangled photons at 1540 nm from type-II spontaneous parametric down-conversion. Compared to standard time-bin-entanglement realizations, the preparation interferometer requires no phase stabilization, simplifying its implementation in quantu... [Phys. Rev. A 87, 020301 (2013)] Published Mon Feb 4, 2013
Atomic and molecular structure and dynamics
Experimental observation of the lowest levels in the photoassociation spectroscopy of the 0g− purely-long-range state of Cs2
Yichi Zhang, Jie Ma, Jizhou Wu, Lirong Wang, Liantuan Xiao, and Suotang Jia
We have experimentally observed the two lowest vibrational levels of Cs2 0g− purely-long-range states. The photoassociation spectroscopy of ultracold cesium atoms with rotational structure presents clear identification of these lowest levels. Values of radiative lifetimes τ3/2=30.41±0.06 ns and τ1/2... [Phys. Rev. A 87, 030503 (2013)] Published Tue Mar 12, 2013
Testing quantum electrodynamics in the lowest singlet states of the beryllium atom
Mariusz Puchalski, Jacek Komasa, and Krzysztof Pachucki
High-precision results are reported for the energy levels of the 2 1S and 2 1P states of the beryllium atom. Calculations are performed using fully correlated Gaussian basis sets and taking into account the relativistic, quantum electrodynamics (QED), and finite nuclear mass effects. Theoretical pre... [Phys. Rev. A 87, 030502 (2013)] Published Mon Mar 11, 2013
g-factor measurement of hydrogenlike 28Si13+ as a challenge to QED calculations
S. Sturm, A. Wagner, M. Kretzschmar, W. Quint, G. Werth, and K. Blaum
Using a phase-detection method to determine the cyclotron frequency of a single trapped ion in a Penning trap allowed us to perform a measurement of the g factor of the bound electron in hydrogenlike 28Si13+ with a statistical uncertainty of 4×10−11. Furthermore, we reevaluated the image-charge shif... [Phys. Rev. A 87, 030501 (2013)] Published Fri Mar 8, 2013
Atomic and molecular collisions and interactions
Convergent-close-coupling formalism for positron scattering from molecules
Mark C. Zammit, Dmitry V. Fursa, and Igor Bray
The ab initio convergent-close-coupling method has been extended to positron-molecule collisions within the adiabatic (fixed-nuclei) approximation. Application to molecular hydrogen at energies from 0.1 to 1000 eV has yielded convergent total ionization and grand total cross sections over most of th... [Phys. Rev. A 87, 020701 (2013)] Published Thu Feb 7, 2013
Observation of a p-wave optical Feshbach resonance
Rekishu Yamazaki, Shintaro Taie, Seiji Sugawa, Katsunari Enomoto, and Yoshiro Takahashi
We demonstrate a p-wave optical Feshbach resonance (OFR) using purely long-range molecular states of a fermionic isotope of ytterbium 171Yb, following the proposition made by K. Goyal et al. [ Phys. Rev. A 82 062704 (2010)]. The p-wave OFR is clearly observed as a modification of a photoassociation... [Phys. Rev. A 87, 010704 (2013)] Published Tue Jan 22, 2013
Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
Quantum interference and multielectron effects in high-harmonic spectra of polar molecules
A. Rupenyan, P. M. Kraus, J. Schneider, and H. J. Wörner
We experimentally and theoretically analyze the manifestations of quantum interference and multiple ionization channels (multiple orbitals) in high-harmonic spectra of aligned N2O molecules. Increasing the probe wavelength from 1.17 to 1.46 μm, we demonstrate the gradual disappearance of multielectr... [Phys. Rev. A 87, 031401 (2013)] Published Fri Mar 8, 2013
Resonant few-photon excitation of a single-ion oscillator
Y.-W. Lin, S. Williams, and B. C. Odom
We study the motion of an undamped single-ion harmonic oscillator, resonantly driven with a pulsed radiation pressure force. We demonstrate that a barium ion, initially cooled to the Doppler limit, quickly phase locks to the drive and builds up coherent oscillations above the thermal distribution af... [Phys. Rev. A 87, 011402 (2013)] Published Thu Jan 31, 2013
Matter waves and collective properties of cold atoms and molecules
Optical control of a quantum rotor
L. F. Buchmann, H. Jing, C. Raman, and P. Meystre
The possibility to coherently control a quantum rotor is investigated theoretically. The rotor is realized by an antiferromagnetic spin-1 Bose-Einstein condensate, trapped in the optical field of a Fabry-Pérot resonator. By tuning the pumping field of the resonator, coherent control over the rotor i... [Phys. Rev. A 87, 031601 (2013)] Published Fri Mar 8, 2013
Antiferrosmectic ground state of two-component dipolar Fermi gases: An analog of meson condensation in nuclear matter
Kenji Maeda, Tetsuo Hatsuda, and Gordon Baym
We show that an antiferrosmectic-C phase has lower energy at high densities than the nonmagnetized Fermi gas and ferronematic phases in an ultracold gas of fermionic atoms, or molecules, with large magnetic dipole moments. This phase, which is analogous to meson condensation in dense nuclear matter,... [Phys. Rev. A 87, 021604 (2013)] Published Fri Feb 22, 2013
Counterflow superfluid of polaron pairs in Bose-Fermi mixtures in optical lattices
Ippei Danshita and L. Mathey
We study the quantum phases of one-dimensional Bose-Fermi mixtures in optical lattices. Assuming repulsive interparticle interactions, equal mass, and unit total filling, we calculate the ground-state phase diagram by means of both the Tomonaga-Luttinger liquid theory and time-evolving block decimat... [Phys. Rev. A 87, 021603 (2013)] Published Thu Feb 21, 2013
Emergence of atomic semifluxons in optical Josephson junctions
M. Grupp, W. P. Schleich, E. Goldobin, D. Koelle, R. Kleiner, and R. Walser
We propose to create pairs of semifluxons starting from a flat-phase state in long, optical 0-π-0 Josephson junctions formed with internal electronic states of atomic Bose-Einstein condensates. In this optical system, we can dynamically tune the length a of the π junction, the detuning δ of the opti... [Phys. Rev. A 87, 021602 (2013)] Published Wed Feb 13, 2013
Quantum control of spin correlations in ultracold lattice gases
P.
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