http://pra.aps.org/ Accepted Papers for Physical Review A hourly 1 2012-02-09T20:06:25-05:00 rss@aps.org assocpub@aps.org 2012-02-09T20:06:25-05:00 en Copyright © 2012 the American Physical Society. Personal use only, all commercial or other reuse prohibited Copyright © 2012 the American Physical Society assocpub@aps.org http://pra.aps.org/accepted/A/b307fN84Yb51bd08e90519b9ccab7408be36cf881 We present a theoretical analysis of methods to synthesize entangled states of two superconducting resonators. These methods use experimentally demonstrated interactions of resonators with artificial atoms, and offer efficient routes to generate nonclassical states. We analyze physical implementatio... Entangled-state synthesis for superconducting resonators 2012-02-09T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/b307fN84Yb51bd08e90519b9ccab7408be36cf881 Quantum information Quantum information http://pra.aps.org/accepted/A/9e07cNc6CabR301fe0102806e1f919d28c4b1fa14 Erratum: Nonadiabatic tunneling in circularly polarized laser fields: Physical picture and calculations [Phys. Rev. A \textbf{84}, 063415 (2011)] 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/9e07cNc6CabR301fe0102806e1f919d28c4b1fa14 Errata Errata http://pra.aps.org/accepted/A/ae079N80Z5f17402d66175361ab442db2c85c0da8 We give an explicit parametrization of the set of mixed quantum states and of the set of mixed classical states for a spin-1 Hilbert space. The boundary of the set of mixed classical states is described as a two-parameter family of ellipsoids. Parametrization of spin-1 classical states 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/ae079N80Z5f17402d66175361ab442db2c85c0da8 Fundamental concepts Fundamental concepts http://pra.aps.org/accepted/A/0a077Y23U4e13c31817d6d211a93f90329b47ca69 We illustrate a reverse Von Neumann measurement scheme in which a geometric phase induced on a quantum harmonic oscillator is measured using a microscopic qubit as a probe. We show how such a phase, generated by a cyclic evolution in the phase space of the harmonic oscillator, can be kicked back on ... Geometric-phase backaction in a mesoscopic qubit-oscillator system 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/0a077Y23U4e13c31817d6d211a93f90329b47ca69 Fundamental concepts Fundamental concepts http://pra.aps.org/accepted/A/ce07cNddT711330659b24c219411f76f2eb397378 We study the formation of stable homonuclear and heteronuclear pentamers from ultraclod atoms via a generalized stimulated Raman adiabatic passage scheme. The atom-molecule dark sate solutions for the system are obtained, and the linear instability and the adiabatic fidelity of the dark state are in... Creating pentamer molecules by generalized stimulated Raman adiabatic passage 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/ce07cNddT711330659b24c219411f76f2eb397378 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://pra.aps.org/accepted/A/87077Nc6Ye718a0e96cd8ac81e1664f1c287bd74d In this paper, we present a characterization of optimal entanglement witnesses in terms of positive maps and then provide a general method of checking optimality of en- tanglement witnesses. Applying it, we obtain new indecomposable optimal witnesses which have no spanning property. These also provi... Characterization of optimal entanglement witnesses 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/87077Nc6Ye718a0e96cd8ac81e1664f1c287bd74d Quantum information Quantum information http://pra.aps.org/accepted/A/5107eN42Z3b12b0e86d66cf1701309d42f3c3cd30 We present a theoretical treatment for the ejection of a secondary electron from a clean metallic surface induced by the impact of a fast primary electron. Assuming a direct scattering between the incident, primary electron and the electron in a metal, we calculate the electron-pair energy distribut... Plasmon-assisted electron-electron collisions at metallic surfaces 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/5107eN42Z3b12b0e86d66cf1701309d42f3c3cd30 Photon, electron, atom, and molecule interactions with solids and surfaces Photon, electron, atom, and molecule interactions with solids and surfaces http://pra.aps.org/accepted/A/4b074Nb6Z951b70f17ab0023e876d5da5cf27eafa The coherence and correlation properties of effective bosonic modes of a nano-mechanical cavity composed of an oscillating mirror and containing an optical lattice of regularly trapped atoms are studied. The system is modelled as a three-mode system, two orthogonal polariton modes representing the c... First-order coherence versus entanglement in a nanomechanical cavity 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/4b074Nb6Z951b70f17ab0023e876d5da5cf27eafa Quantum information Quantum information http://pra.aps.org/accepted/A/6d07aN8bY2210e02b8b43793236f810b87df8b193 We study the flow of a one-dimensional Bose-Einstein condensate incident onto a narrow obstacle. We consider a configuration in which a dispersive shock is formed and propagates upstream away from the obstacle while the downstream flow reaches a supersonic velocity, generating a sonic horizon. Condi... Generation of dispersive shock waves by the flow of a Bose-Einstein condensate past a narrow obstacle 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/6d07aN8bY2210e02b8b43793236f810b87df8b193 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://pra.aps.org/accepted/A/d7079N6eZ0b13b03f6df7b6074014129fcbb43055 A new nondestructive approach to determine an unknown two-qubit Werner state of an ensemble is proposed. The approach is feasible for all four types of Werner states which contain different kinds of Bell states. Our scheme can detect the magnitude of the real parameter of an initial Werner state. An... Quantum-nondemolition determination of an unknown Werner state 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/d7079N6eZ0b13b03f6df7b6074014129fcbb43055 Quantum information Quantum information http://pra.aps.org/accepted/A/2d070NcbAa1E9b1fa04748d021826942d73b92ea3 We study the effects of nonzero photon momentum on the triply-differential cross section for (g,2e) processes. Due to the low value of the photon momentum, these effects are weak and manifest only in special kinematical conditions like the back-to-back emission of the electrons with equal energy sha... Effects of photon momentum in nonrelativistic $(\gamma,2e)$ processes 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/2d070NcbAa1E9b1fa04748d021826942d73b92ea3 Atomic and molecular processes in external fields, including interactions with strong fields and short pulses Atomic and molecular processes in external fields, including interactions with strong fields and short pulses http://pra.aps.org/accepted/A/56076NabAbf1ce0c67f56706952b4375eb7c58cfe We report an ab initio calculation of the shielding of the nuclear magnetic moment by the bound electron in hydrogen-like ions. This investigation takes into account several effects that have not been calculated before (electron self-energy, vacuum polarization, nuclear magnetization distribution), ... QED calculation of the nuclear magnetic shielding for hydrogenlike ions 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/56076NabAbf1ce0c67f56706952b4375eb7c58cfe Atomic and molecular structure and dynamics Atomic and molecular structure and dynamics http://pra.aps.org/accepted/A/d9074NaaY271080c09370cb88751700f0a2352b66 We consider a dark soliton in a Bose-Einstein condensate in the presence of a weak disorder potential. Deformation of the soliton shape is analyzed within the Bogoliubov approach and by employing an expansion in eigenstates of the Pöschl-Teller Hamiltonian. Comparison of the results with the nu... Dark soliton in a disorder potential 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/d9074NaaY271080c09370cb88751700f0a2352b66 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://pra.aps.org/accepted/A/9d073YecR711373474130fb493888f18591294bd3 We show how to capture a single photon of arbitrary temporal shape with one atom coupled to an optical cavity. Our model applies to Raman transitions in three-level atoms with one branch of the transition controlled by a (classical) laser pulse, and the other coupled to the cavity. Photons impinging... Single-photon absorption in coupled atom-cavity systems 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/9d073YecR711373474130fb493888f18591294bd3 Quantum optics, physics of lasers, nonlinear optics, classical optics Quantum optics, physics of lasers, nonlinear optics, classical optics http://pra.aps.org/accepted/A/5e07dNddS7eWfc1dc05d88892143a925804fed2d8 The dynamical behavior of a coupled cavity array is investigated when each cavity contains a three-level atom. For the uniform and staggered intercavity hopping, the whole system Hamiltonian can be analytically diagonalized in the subspace of single-atom excitation. The quantum state transfer along ... Quantum state transmission in a cavity array via two-photon exchange 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/5e07dNddS7eWfc1dc05d88892143a925804fed2d8 Quantum optics, physics of lasers, nonlinear optics, classical optics Quantum optics, physics of lasers, nonlinear optics, classical optics http://pra.aps.org/accepted/A/b4079N44Xfc1fa0218e56fc36532f9222949d9b45 Coherent Population Trapping (CPT) is theoretically examined as a magnetic-field diagnostic for high-beta hydrogen plasma. Time-dependent quantum mechanical Bloch equations, which describe the evolution of the 2s and 3p level populations of the hydrogen atom under CPT conditions, were solved numeric... Coherent population trapping as a magnetic field diagnostic for hydrogen plasmas 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/b4079N44Xfc1fa0218e56fc36532f9222949d9b45 Atomic and molecular processes in external fields, including interactions with strong fields and short pulses Atomic and molecular processes in external fields, including interactions with strong fields and short pulses http://pra.aps.org/accepted/A/35079N93Wa219706587d96474bb5d35e1f4e4c319 We study numerically pump-probe schemes for monitoring electron-nuclear motion in a dissociating molecule using a mid-infrared intense few femtosecond probe laser pulse which generates molecular high-order harmonics (MHOHG) from a coherent superposition of electron-nuclear wave packets prepared by a... High-order-harmonic generation from coherent electron wave packets in atoms and molecules as a tool for monitoring attosecond electrons 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/35079N93Wa219706587d96474bb5d35e1f4e4c319 Atomic and molecular processes in external fields, including interactions with strong fields and short pulses Atomic and molecular processes in external fields, including interactions with strong fields and short pulses http://pra.aps.org/accepted/A/34071N57Y2215a0cc8f622c578a9b05a2ac18c8ee We study high-order harmonic generation from a laser-produced tin plasma using 780 nm and 390 nm, 40 fs, 1 kHz pulses. Varying the chirp of the laser radiation, we observe variation of the harmonic frequency and intensity. The enhanced 16th and 17th harmonics are attributed to the influence of the s... Experimental and theoretical studies of two-color pump resonance-induced enhancement of odd and even harmonics from a tin plasma 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/34071N57Y2215a0cc8f622c578a9b05a2ac18c8ee Quantum optics, physics of lasers, nonlinear optics, classical optics Quantum optics, physics of lasers, nonlinear optics, classical optics http://pra.aps.org/accepted/A/ee079Y76U731d722081093953913887a501fc1249 The Berry phase acquired by an electromagnetic field undergoing an adiabatic and cyclic evolution in phase space is a purely quantum-mechanical effect of the field. However, this phase is usually accompanied by a dynamical contribution and can not be manifested in any light-beam interference experim... Manifestation of a nonclassical Berry phase of an electromagnetic field in atomic Ramsey interference 2012-02-07T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/ee079Y76U731d722081093953913887a501fc1249 Fundamental concepts Fundamental concepts http://pra.aps.org/accepted/A/6b079NeeY5310f07c8f084e1feef1e1d9a8cdc80a Inspired by the recent creation of the honeycomb optical lattice and the realization of the Mott insulating state in a square lattice by shaking, we study here the shaken honeycomb optical lattice. For a periodic shaking of the lattice, a Floquet theory may be applied to derive a time-independent Ha... Merging and alignment of Dirac points in a shaken honeycomb optical lattice 2012-02-07T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/6b079NeeY5310f07c8f084e1feef1e1d9a8cdc80a Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://pra.aps.org/accepted/A/25073NecZe71a60f88015dc3d2a68529ba18a2141 The scattering dynamics of a particle incident on a model system with three bound states, in the presence of a localized radiation field, is studied using Floquet scattering theory. An analytic expression for the Floquet S-matrix is derived for the case of a radiation field containing two frequency ... Scattering from radiation-induced entangled states 2012-02-07T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/25073NecZe71a60f88015dc3d2a68529ba18a2141 Atomic and molecular processes in external fields, including interactions with strong fields and short pulses Atomic and molecular processes in external fields, including interactions with strong fields and short pulses http://pra.aps.org/accepted/A/1e076N3bZ53155015786785835617843a2ef4b537 The mechanism of the formation of doorway quasi-states (transient species) prior to the start of ionization of the two-electron molecular H2 system subjected to an 8-cycle ultrashort intense laser pulse is investigated by solving exactly the 1D electronic time-dependent Schrödinger equation, in... Mapping electron dynamics in molecular H$_2$ using high-order-harmonic generation time profiles 2012-02-07T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/1e076N3bZ53155015786785835617843a2ef4b537 Atomic and molecular processes in external fields, including interactions with strong fields and short pulses Atomic and molecular processes in external fields, including interactions with strong fields and short pulses http://pra.aps.org/accepted/A/7f073N8cYcf1180a479c3e44b1bad5f0517285911 We propose a simple yet efficient method for generating abruptly autofocusing optical beams with arbitrary caustics. In addition we introduce a family of abruptly autodefocusing beams whose maximum intensity suddenly decreases by orders of magnitude right after the target. The method relies on appro... Abruptly autofocusing and autodefocusing optical beams with arbitrary caustics 2012-02-07T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/7f073N8cYcf1180a479c3e44b1bad5f0517285911 Quantum optics, physics of lasers, nonlinear optics, classical optics Quantum optics, physics of lasers, nonlinear optics, classical optics http://pra.aps.org/accepted/A/7f070NcaY941f303e8031160a3522252d291c116f We investigate the dynamics of Mott-insulating regions of a trapped bosonic gas as the interaction strength is changed linearly with time. The bosonic gas considered is loaded into an optical lattice and confined to a parabolic trapping potential. Two situations are addressed: the formation of Mott ... Slow quench dynamics of Mott-insulating regions in a trapped Bose gas 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/7f070NcaY941f303e8031160a3522252d291c116f Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://pra.aps.org/accepted/A/3607dNfcY811f80177128a77fe5fe5d220672f703 Linear optics quantum computing (LOQC) is a promising approach to implementing scalable quantum computation (QC). However, this approach has very demanding physical resource requirements. Recently, Aaronson & Arkhipov showed that a simplified model, which avoids the requirement for fast feed-for... Error tolerance of the boson-sampling model for linear optics quantum computing 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/3607dNfcY811f80177128a77fe5fe5d220672f703 Quantum information Quantum information http://pra.aps.org/accepted/A/30072N88Ab319101761a0678f5740cbd1e72625f6 We report the perpendicular plane ionization results of (e, 2e) triple differential cross sections for the Ne (2p) and Ar (3p) atoms at the incident electron energies ranging from 5 eV to 50 eV above ionization potential for neon atoms and 2 eV to 50 eV above ionization potential for the argon atoms... Effects of target polarization and postcollision interaction on the electron-impact single ionization of Ne(2$p$), Ar(3$p$), and Na(3$s$) atoms 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/30072N88Ab319101761a0678f5740cbd1e72625f6 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://pra.aps.org/accepted/A/26077Ya0L8415b26a3b784b2bccb9ad61efd70cb3 We develop an approach of quantifying entanglement in mixed quantum states by the optimal entanglement witness operator. We identify the convex set of mixed states for which a single witness provides the exact value of an entanglement measure, and show that the convexity, properties, and symmetries ... Quantifying mixed-state quantum entanglement by optimal entanglement witnesses 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/26077Ya0L8415b26a3b784b2bccb9ad61efd70cb3 Quantum information Quantum information http://pra.aps.org/accepted/A/b3070N55A411a805c67651752f43011d5b687e4f8 Stability of solitons in parity-time (PT)-symmetric periodic potentials (optical lattices) is analyzed in both one- and two-dimensional systems. First we show analytically that when the strength of the gain-loss component in the PT lattice rises above a certain threshold (phase-transition point), an... Stability analysis for solitons in \mathcal{PT}-symmetric optical lattices 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/b3070N55A411a805c67651752f43011d5b687e4f8 Quantum optics, physics of lasers, nonlinear optics, classical optics Quantum optics, physics of lasers, nonlinear optics, classical optics http://pra.aps.org/accepted/A/4d07dRe7X111380187303979b7cbf1d009300944c The modeling of complex atomic spectra is a difficult task, due to the huge number of levels and lines involved. In the presence of a magnetic field, the computation becomes even more difficult. The anomalous Zeeman pattern is a superposition of many absorption or emission profiles with different Ze... Characterization of anomalous Zeeman patterns in complex atomic spectra 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/4d07dRe7X111380187303979b7cbf1d009300944c Atomic and molecular processes in external fields, including interactions with strong fields and short pulses Atomic and molecular processes in external fields, including interactions with strong fields and short pulses http://pra.aps.org/accepted/A/63077Y4cX891eb3270702075731951cc6d55f6c65 We theoretically study the stability conditions and excitation regimes of hyper-parametric oscillation and Kerr frequency comb generation in continuously pumped nonlinear optical microresonators possessing anomalous group velocity dispersion. We show that both hard and soft excitation regimes are po... Hard and soft excitation regimes of Kerr frequency combs 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited Phys. Rev. A article Physical Review A http://pra.aps.org/accepted/A/63077Y4cX891eb3270702075731951cc6d55f6c65 Quantum optics, physics of lasers, nonlinear optics, classical optics Quantum optics, physics of lasers, nonlinear optics, classical optics