http://prl.aps.org/ Recently published articles in Phys. Rev. Lett. in the Table of Content section "General Physics: Statistical and Quantum Mechanics, Quantum Information, etc." en-us Copyright (c) 2008 The American Physical Society 2008-05-07T08:09:05-04:00 assocpub@aps.org rss@aps.org hourly 4 2008-05-07T08:09:05-04:00 rss@aps.org http://link.aps.org/doi/10.1103/PhysRevLett.100.180601 Author(s): S. Joubaud, A. Petrosyan, S. Ciliberto, and N. B. Garnier<br/>The orientation fluctuations of the director of a liquid crystal are measured, by a sensitive polarization interferometer, close to the Fréedericksz transition, which is a second-order transition driven by an electric field. We show that, near the critical value of the field, the spatially averaged...<br/>[Phys. Rev. Lett. 100, 180601] Published Mon May 05, 2008 S. Joubaud, A. Petrosyan, S. Ciliberto, and N. B. Garnier 2008-05-05T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.180601 Phys. Rev. Lett. 100, 180601 text/html article Physical Review Letters 100 18 2008-05-05T00:00:00-04:00 180601 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.180402 Author(s): Jyrki Piilo, Sabrina Maniscalco, Kari Härkönen, and Kalle-Antti Suominen<br/>Open quantum systems that interact with structured reservoirs exhibit non-Markovian dynamics. We present a quantum jump method for treating the dynamics of such systems. This approach is a generalization of the standard Monte Carlo wave function (MCWF) method for Markovian dynamics. The MCWF method...<br/>[Phys. Rev. Lett. 100, 180402] Published Mon May 05, 2008 Jyrki Piilo, Sabrina Maniscalco, Kari Härkönen, and Kalle-Antti Suominen 2008-05-05T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.180402 Phys. Rev. Lett. 100, 180402 text/html article Physical Review Letters 100 18 2008-05-05T00:00:00-04:00 180402 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.180401 Author(s): S. Camalet<br/>We derive the Joule expansion of an isolated perfect gas from the principles of quantum mechanics. Contrary to most studies of irreversible processes which consider composite systems, the interesting and ignored degrees of freedom are here described by operators acting in the same many-body Hilbert ...<br/>[Phys. Rev. Lett. 100, 180401] Published Mon May 05, 2008 S. Camalet 2008-05-05T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.180401 Phys. Rev. Lett. 100, 180401 text/html article Physical Review Letters 100 18 2008-05-05T00:00:00-04:00 180401 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170506 Author(s): Hagai B. Perets, Yoav Lahini, Francesca Pozzi, Marc Sorel, Roberto Morandotti, and Yaron Silberberg<br/>Quantum random walks are the quantum counterpart of classical random walks, and were recently studied in the context of quantum computation. Physical implementations of quantum walks have only been made in very small scale systems severely limited by decoherence. Here we show that the propagation of...<br/>[Phys. Rev. Lett. 100, 170506] Published Fri May 02, 2008 Hagai B. Perets, Yoav Lahini, Francesca Pozzi, Marc Sorel, Roberto Morandotti, and Yaron Silberberg 2008-05-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170506 Phys. Rev. Lett. 100, 170506 text/html article Physical Review Letters 100 17 2008-05-02T00:00:00-04:00 170506 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170404 Author(s): Ludovic Pricoupenko<br/>Low energy scattering amplitudes for two atoms in one- and two-dimensional atomic waveguides are derived for short range isotropic and resonant interactions in high partial wave channels. Taking into account the finite width of the resonance which was neglected in previous works is shown to have imp...<br/>[Phys. Rev. Lett. 100, 170404] Published Fri May 02, 2008 Ludovic Pricoupenko 2008-05-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170404 Phys. Rev. Lett. 100, 170404 text/html article Physical Review Letters 100 17 2008-05-02T00:00:00-04:00 170404 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170403 Author(s): M. Vengalattore, S. R. Leslie, J. Guzman, and D. M. Stamper-Kurn<br/>Helical spin textures in a ^{87} Rb F=1 spinor Bose-Einstein condensate are found to decay spontaneously toward a spatially modulated structure of spin domains. The formation of this modulated phase is ascribed to magnetic dipolar interactions that energetically favor the short-wavelength domains ov...<br/>[Phys. Rev. Lett. 100, 170403] Published Thu May 01, 2008 M. Vengalattore, S. R. Leslie, J. Guzman, and D. M. Stamper-Kurn 2008-05-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170403 Phys. Rev. Lett. 100, 170403 text/html article Physical Review Letters 100 17 2008-05-01T00:00:00-04:00 170403 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170402 Author(s): Ehud Altman, Yariv Kafri, Anatoli Polkovnikov, and Gil Refael<br/>Using a strong disorder real-space renormalization group, we study the phase diagram of a fully disordered chain of interacting bosons. Since this approach does not suffer from runaway flows, it allows a direct study of the insulating phases, not accessible in a weak disorder perturbative treatment....<br/>[Phys. Rev. Lett. 100, 170402] Published Thu May 01, 2008 Ehud Altman, Yariv Kafri, Anatoli Polkovnikov, and Gil Refael 2008-05-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170402 Phys. Rev. Lett. 100, 170402 text/html article Physical Review Letters 100 17 2008-05-01T00:00:00-04:00 170402 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170505 Author(s): Hisaki Oka and Hajime Ishihara<br/>We theoretically investigate entangled-photon generation via a biexciton in a planar microcavity. Owing to strong exciton-photon coupling, the biexciton in the cavity produces a bound two-cavity-polariton state (cavity bipolariton). Entangled photons are generated by the cascade decay of the cavity ...<br/>[Phys. Rev. Lett. 100, 170505] Published Wed Apr 30, 2008 Hisaki Oka and Hajime Ishihara 2008-04-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170505 Phys. Rev. Lett. 100, 170505 text/html article Physical Review Letters 100 17 2008-04-30T00:00:00-04:00 170505 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170504 Author(s): Ditte Møller, Lars Bojer Madsen, and Klaus Mølmer<br/>We propose to apply stimulated adiabatic passage to transfer atoms from their ground state into Rydberg excited states. Atoms a few micrometers apart experience a dipole-dipole interaction among Rydberg states that is strong enough to shift the atomic resonance and inhibit excitation of more than a ...<br/>[Phys. Rev. Lett. 100, 170504] Published Tue Apr 29, 2008 Ditte Møller, Lars Bojer Madsen, and Klaus Mølmer 2008-04-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170504 Phys. Rev. Lett. 100, 170504 text/html article Physical Review Letters 100 17 2008-04-29T00:00:00-04:00 170504 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170503 Author(s): Gerardo Adesso and Giulio Chiribella<br/>We provide a quantum benchmark for teleportation and storage of single-mode squeezed states with zero displacement and a completely unknown degree of squeezing along a given direction. For pure squeezed input states, a fidelity higher than 81.5% has to be attained in order to outperform any classica...<br/>[Phys. Rev. Lett. 100, 170503] Published Tue Apr 29, 2008 Gerardo Adesso and Giulio Chiribella 2008-04-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170503 Phys. Rev. Lett. 100, 170503 text/html article Physical Review Letters 100 17 2008-04-29T00:00:00-04:00 170503 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170502 Author(s): Graeme Smith, Joseph M. Renes, and John A. Smolin<br/>A central goal in information theory and cryptography is finding simple characterizations of optimal communication rates under various restrictions and security requirements. Ideally, the optimal key rate for a quantum key distribution (QKD) protocol would be given by a single-letter formula involvi...<br/>[Phys. Rev. Lett. 100, 170502] Published Mon Apr 28, 2008 Graeme Smith, Joseph M. Renes, and John A. Smolin 2008-04-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170502 Phys. Rev. Lett. 100, 170502 text/html article Physical Review Letters 100 17 2008-04-28T00:00:00-04:00 170502 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170501 Author(s): David Petrosyan and Michael Fleischhauer<br/>We show that pairs of atoms optically excited to the Rydberg states can strongly interact with each other via effective long-range dipole-dipole or van der Waals interactions mediated by their nonresonant coupling to a common microwave field mode of a superconducting coplanar waveguide cavity. These...<br/>[Phys. Rev. Lett. 100, 170501] Published Mon Apr 28, 2008 David Petrosyan and Michael Fleischhauer 2008-04-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170501 Phys. Rev. Lett. 100, 170501 text/html article Physical Review Letters 100 17 2008-04-28T00:00:00-04:00 170501 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.170401 Author(s): A. Baas, K. G. Lagoudakis, M. Richard, R. André, Le Si Dang, and B. Deveaud-Plédran<br/>Condensation of exciton polaritons in semiconductor microcavities takes place despite in-plane disorder. Below the critical density, the inhomogeneity of the disorder limits the spatial extension of the ground state. Above the critical density, in the presence of weak disorder, this limitation is sp...<br/>[Phys. Rev. Lett. 100, 170401] Published Mon Apr 28, 2008 A. Baas, K. G. Lagoudakis, M. Richard, R. André, Le Si Dang, and B. Deveaud-Plédran 2008-04-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.170401 Phys. Rev. Lett. 100, 170401 text/html article Physical Review Letters 100 17 2008-04-28T00:00:00-04:00 170401 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160506 Author(s): Daniel A. Lidar<br/>I show how to protect adiabatic quantum computation (AQC) against decoherence and certain control errors, using a hybrid methodology involving dynamical decoupling, subsystem and stabilizer codes, and energy gaps. Corresponding error bounds are derived. As an example, I show how to perform decoheren...<br/>[Phys. Rev. Lett. 100, 160506] Published Fri Apr 25, 2008 Daniel A. Lidar 2008-04-25T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160506 Phys. Rev. Lett. 100, 160506 text/html article Physical Review Letters 100 16 2008-04-25T00:00:00-04:00 160506 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160406 Author(s): A. G. Sykes, D. M. Gangardt, M. J. Davis, K. Viering, M. G. Raizen, and K. V. Kheruntsyan<br/>We analytically calculate the spatial nonlocal pair correlation function for an interacting uniform 1D Bose gas at finite temperature and propose an experimental method to measure nonlocal correlations. Our results span six different physical realms, including the weakly and strongly interacting re...<br/>[Phys. Rev. Lett. 100, 160406] Published Fri Apr 25, 2008 A. G. Sykes, D. M. Gangardt, M. J. Davis, K. Viering, M. G. Raizen, and K. V. Kheruntsyan 2008-04-25T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160406 Phys. Rev. Lett. 100, 160406 text/html article Physical Review Letters 100 16 2008-04-25T00:00:00-04:00 160406 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160601 Author(s): Michael Kastner and Oliver Schnetz<br/>Based on the study of saddle points of the potential energy landscapes of generic classical many-particle systems, we present a necessary criterion for the occurrence of a thermodynamic phase transition. Remarkably, this criterion imposes conditions on microscopic properties, namely, curvatures at t...<br/>[Phys. Rev. Lett. 100, 160601] Published Thu Apr 24, 2008 Michael Kastner and Oliver Schnetz 2008-04-24T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160601 Phys. Rev. Lett. 100, 160601 text/html article Physical Review Letters 100 16 2008-04-24T00:00:00-04:00 160601 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160505 Author(s): B. Lee, W. M. Witzel, and S. Das Sarma<br/>We present a remarkable finding that a recently discovered [G. S. Uhrig, Phys. Rev. Lett. 98, 100504 (2007)] series of pulse sequences, designed to optimally restore coherence to a qubit in the spin-boson model of decoherence, is in fact completely model independent and generically valid for arbit...<br/>[Phys. Rev. Lett. 100, 160505] Published Wed Apr 23, 2008 B. Lee, W. M. Witzel, and S. Das Sarma 2008-04-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160505 Phys. Rev. Lett. 100, 160505 text/html article Physical Review Letters 100 16 2008-04-23T00:00:00-04:00 160505 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160405 Author(s): F. Deuretzbacher, K. Fredenhagen, D. Becker, K. Bongs, K. Sengstock, and D. Pfannkuche<br/>We present an exact analytical solution of the fundamental system of quasi-one-dimensional spin-1 bosons with infinite δ repulsion. The eigenfunctions are constructed from the wave functions of noninteracting spinless fermions, based on Girardeau’s Fermi-Bose mapping. We show that the spinor boso...<br/>[Phys. Rev. Lett. 100, 160405] Published Wed Apr 23, 2008 F. Deuretzbacher, K. Fredenhagen, D. Becker, K. Bongs, K. Sengstock, and D. Pfannkuche 2008-04-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160405 Phys. Rev. Lett. 100, 160405 text/html article Physical Review Letters 100 16 2008-04-23T00:00:00-04:00 160405 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160504 Author(s): Anatoly A. Svidzinsky, Jun-Tao Chang, and Marlan O. Scully<br/>We study the correlated spontaneous emission from a dense spherical cloud of N atoms uniformly excited by absorption of a single photon. We find that the decay of such a state depends on the relation between an effective Rabi frequency Ω∝ sqrt[N] and the time of photon flight through the cloud R/...<br/>[Phys. Rev. Lett. 100, 160504] Published Tue Apr 22, 2008 Anatoly A. Svidzinsky, Jun-Tao Chang, and Marlan O. Scully 2008-04-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160504 Phys. Rev. Lett. 100, 160504 text/html article Physical Review Letters 100 16 2008-04-22T00:00:00-04:00 160504 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160503 Author(s): Joshua Combes, Howard M. Wiseman, and Kurt Jacobs<br/>We introduce a feedback control algorithm that increases the speed at which a measurement extracts information about a d-dimensional system by a factor that scales as d^{2} . Generalizing this algorithm, we apply it to a register of n qubits and show an improvement of O(n). We derive analytical boun...<br/>[Phys. Rev. Lett. 100, 160503] Published Tue Apr 22, 2008 Joshua Combes, Howard M. Wiseman, and Kurt Jacobs 2008-04-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160503 Phys. Rev. Lett. 100, 160503 text/html article Physical Review Letters 100 16 2008-04-22T00:00:00-04:00 160503 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160502 Author(s): Giuseppe Vallone, Enrico Pomarico, Francesco De Martini, and Paolo Mataloni<br/>By using 2-photon 4-qubit cluster states we demonstrate deterministic one-way quantum computation in a single qubit rotation algorithm. In this operation feed-forward measurements are automatically implemented by properly choosing the measurement basis of the qubits, while Pauli error corrections ar...<br/>[Phys. Rev. Lett. 100, 160502] Published Tue Apr 22, 2008 Giuseppe Vallone, Enrico Pomarico, Francesco De Martini, and Paolo Mataloni 2008-04-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160502 Phys. Rev. Lett. 100, 160502 text/html article Physical Review Letters 100 16 2008-04-22T00:00:00-04:00 160502 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160404 Author(s): Ulrich D. Jentschura, Peter J. Mohr, Joseph N. Tan, and Benedikt J. Wundt<br/>A comparison of precision frequency measurements to quantum electrodynamics (QED) predictions for Rydberg states of hydrogenlike ions can yield information on values of fundamental constants and test theory. With the results of a calculation of a key QED contribution reported here, the uncertainty i...<br/>[Phys. Rev. Lett. 100, 160404] Published Tue Apr 22, 2008 Ulrich D. Jentschura, Peter J. Mohr, Joseph N. Tan, and Benedikt J. Wundt 2008-04-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160404 Phys. Rev. Lett. 100, 160404 text/html article Physical Review Letters 100 16 2008-04-22T00:00:00-04:00 160404 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160403 Author(s): Erhai Zhao and W. Vincent Liu<br/>A gas of strongly interacting single-species (spinless) p-orbital fermionic atoms in 2D optical lattices is proposed and studied. Several interesting new features are found. In the Mott limit on a square lattice, the gas is found to be described effectively by an orbital exchange Hamiltonian equival...<br/>[Phys. Rev. Lett. 100, 160403] Published Tue Apr 22, 2008 Erhai Zhao and W. Vincent Liu 2008-04-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160403 Phys. Rev. Lett. 100, 160403 text/html article Physical Review Letters 100 16 2008-04-22T00:00:00-04:00 160403 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160501 Author(s): Vittorio Giovannetti, Seth Lloyd, and Lorenzo Maccone<br/>A random access memory (RAM) uses n bits to randomly address N=2^{n} distinct memory cells. A quantum random access memory (QRAM) uses n qubits to address any quantum superposition of N memory cells. We present an architecture that exponentially reduces the requirements for a memory call: O(log⁡N)...<br/>[Phys. Rev. Lett. 100, 160501] Published Mon Apr 21, 2008 Vittorio Giovannetti, Seth Lloyd, and Lorenzo Maccone 2008-04-21T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160501 Phys. Rev. Lett. 100, 160501 text/html article Physical Review Letters 100 16 2008-04-21T00:00:00-04:00 160501 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160402 Author(s): A. M. Kamchatnov and L. P. Pitaevskii<br/>The stability of dark solitons generated by supersonic flow of a Bose-Einstein condensate past an obstacle is investigated. It is shown that in the reference frame attached to the obstacle a transition occurs at some critical value of the flow velocity from absolute instability of dark solitons to t...<br/>[Phys. Rev. Lett. 100, 160402] Published Mon Apr 21, 2008 A. M. Kamchatnov and L. P. Pitaevskii 2008-04-21T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160402 Phys. Rev. Lett. 100, 160402 text/html article Physical Review Letters 100 16 2008-04-21T00:00:00-04:00 160402 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.160401 Author(s): Andrzej Grudka and Paweł Kurzyński<br/>Cabello and Nakamura have shown [A. Cabello, Phys. Rev. Lett. 90, 190401 (2003)] that the Kochen-Specker theorem can be applied to two-dimensional systems if one uses positive operator-valued measures (POVM). We show that the contextuality in their models is not of the Kochen-Specker type, but it is...<br/>[Phys. Rev. Lett. 100, 160401] Published Mon Apr 21, 2008 Andrzej Grudka and Paweł Kurzyński 2008-04-21T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.160401 Phys. Rev. Lett. 100, 160401 text/html article Physical Review Letters 100 16 2008-04-21T00:00:00-04:00 160401 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.150801 Author(s): A. Shelkovnikov, R. J. Butcher, C. Chardonnet, and A. Amy-Klein<br/>We report a limit on the fractional temporal variation of the proton-to-electron mass ratio as 1/(m_{P} /m_{e} )∂/∂t(m_{P} /m_{e} )=(-3.8±5.6)×10^{-14}   yr^{-1} , obtained by comparing the frequency of a rovibrational transition in SF_{6} with the fundamental hyperfine transition in Cs. T...<br/>[Phys. Rev. Lett. 100, 150801] Published Fri Apr 18, 2008 A. Shelkovnikov, R. J. Butcher, C. Chardonnet, and A. Amy-Klein 2008-04-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.150801 Phys. Rev. Lett. 100, 150801 text/html article Physical Review Letters 100 15 2008-04-18T00:00:00-04:00 150801 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.150501 Author(s): F. Ciccarello, M. Paternostro, M. S. Kim, and G. M. Palma<br/>We present a scheme for the extraction of singlet states of two remote particles of arbitrary quantum spin number. The goal is achieved through post-selection of the state of interaction mediators sent in succession. A small number of iterations is sufficient to make the scheme effective. We propose...<br/>[Phys. Rev. Lett. 100, 150501] Published Fri Apr 18, 2008 F. Ciccarello, M. Paternostro, M. S. Kim, and G. M. Palma 2008-04-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.150501 Phys. Rev. Lett. 100, 150501 text/html article Physical Review Letters 100 15 2008-04-18T00:00:00-04:00 150501 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.150404 Author(s): D. N. Matsukevich, P. Maunz, D. L. Moehring, S. Olmschenk, and C. Monroe<br/>We observe violation of a Bell inequality between the quantum states of two remote Yb^{+} ions separated by a distance of about 1 m with the detection loophole closed. The heralded entanglement of two ions is established via interference and joint detection of two emitted photons, whose polarizatio...<br/>[Phys. Rev. Lett. 100, 150404] Published Fri Apr 18, 2008 D. N. Matsukevich, P. Maunz, D. L. Moehring, S. Olmschenk, and C. Monroe 2008-04-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.150404 Phys. Rev. Lett. 100, 150404 text/html article Physical Review Letters 100 15 2008-04-18T00:00:00-04:00 150404 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevLett.100.150601 Author(s): Christian Flindt, Tomáš Novotný, Alessandro Braggio, Maura Sassetti, and Antti-Pekka Jauho<br/>We derive a general expression for the cumulant generating function (CGF) of non-Markovian quantum stochastic transport processes. The long-time limit of the CGF is determined by a single dominating pole of the resolvent of the memory kernel from which we extract the zero-frequency cumulants of the ...<br/>[Phys. Rev. Lett. 100, 150601] Published Thu Apr 17, 2008 Christian Flindt, Tomáš Novotný, Alessandro Braggio, Maura Sassetti, and Antti-Pekka Jauho 2008-04-17T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.100.150601 Phys. Rev. Lett. 100, 150601 text/html article Physical Review Letters 100 15 2008-04-17T00:00:00-04:00 150601 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.