• Duplex symmetry and its relation to the conservation of optical helicity

    Updated: 2012-07-30 14:00:00
    Author(s): Stephen M. Barnett, Robert P. Cameron, and Alison M. YaoHelicity is a familiar concept in particle physics and also appears in the physics of fluids and plasmas. In this paper, we present the optical helicity in a form readily applicable to both quantum and classical problems. We examine the relationship between the optical helicity and the more familiar...[Phys. Rev. A 86, 013845] Published Mon Jul 30, 2012

  • Diffusion-free image storage in hot atomic vapor

    Updated: 2012-07-30 14:00:00
    Author(s): Young-Wook Cho, Joo-Eon Oh, and Yoon-Ho KimThe ability to directly store optical images in atomic vapor has many potential applications, but the diffusion of atoms severely limits the image resolution and storage duration. In this paper, we report an experimental demonstration on diffusion-free storage of optical images in hot atomic vapor. ...[Phys. Rev. A 86, 013844] Published Mon Jul 30, 2012

  • Observation of the temporal Bragg-diffraction-induced laser-pulse splitting in a linear photonic crystal

    Updated: 2012-07-30 14:00:00
    Author(s): S. E. Svyakhovskiy, V. O. Kompanets, A. I. Maydykovskiy, T. V. Murzina, S. V. Chekalin, A. A. Skorynin, V. A. Bushuev, and B. I. MantsyzovTemporal Bragg-diffraction-induced laser-pulse splitting into two pulses propagating with different group velocities is observed in multilayered linear photonic crystals (PCs). This phenomenon originates from spatially inhomogeneous light localization within the PCs at the Laue scheme of the dynamic...[Phys. Rev. A 86, 013843] Published Mon Jul 30, 2012

  • Plasmonic nanoantennas for efficient control of polarization-entangled photon pairs

    Updated: 2012-07-30 14:00:00
    Author(s): Ivan S. Maksymov, Andrey E. Miroshnichenko, and Yuri S. KivsharWe suggest a source of polarization-entangled photon pairs based on a cross-shaped plasmonic nanoantenna driven by a single quantum dot. The integration of the nanoantenna with a metal mirror overcomes the fundamental tradeoff between the spontaneous emission (SE) enhancement and the extraction effi... [Phys. Rev. A 86, 011801] Published Mon Jul 30, 2012

  • Nonlinear propagation dynamics of finite-energy Airy beams

    Updated: 2012-07-27 14:00:00
    Author(s): P. Panagiotopoulos, D. Abdollahpour, A. Lotti, A. Couairon, D. Faccio, D. G. Papazoglou, and S. TzortzakisThe nonlinear dynamics of intense truncated Airy beams in Kerr ionizing media are investigated from numerical simulations and experiments. We show numerically that a competition between the linear and nonlinear effects takes place and may be modified by tuning the width of the main lobe of the Airy ...[Phys. Rev. A 86, 013842] Published Fri Jul 27, 2012

  • Radiation pressure on a submerged absorptive partial reflector deduced from the Doppler shift

    Updated: 2012-07-27 14:00:00
    Author(s): Masud Mansuripur and Armis R. ZakharianWhen a light pulse is reflected from a mirror, energy and momentum are exchanged between the electromagnetic field and the material medium. The resulting change in the energy of the reflected photons is directly related to their Doppler shifts arising from the change in the state of motion of the mi...[Phys. Rev. A 86, 013841] Published Fri Jul 27, 2012

  • Effect of spatial coherence on propagation, tight focusing, and radiation forces of an azimuthally polarized beam

    Updated: 2012-07-26 14:00:00
    Author(s): Yiming Dong, Fei Wang, Chengliang Zhao, and Yangjian CaiWe report experimental generation of an azimuthally polarized (AP) beam with variable spatial coherence. The effect of spatial coherence on the propagation properties of an AP beam is studied both numerically and experimentally, and our experimental results agree well with the theoretical prediction...[Phys. Rev. A 86, 013840] Published Thu Jul 26, 2012

  • Paul Pugliesi - Professional Surfer Joins SKELETON Optics

    Updated: 2012-07-25 15:36:35
    Paul Pugliesi - Professional Surfer and SKELETON Sponsored Athlete from Oceanside California has joined our group of elite athletes that share the passion for our brand.  f you have a chance drop by his Facebook page and say hello.

  • Going where the beam is good

    Updated: 2012-07-25 01:41:02
    A podcast about science careers, the end of the Tevatron, and why particle physicists are like surfer dudes

  • Simple asymptotic forms for Sommerfeld and Brillouin precursors

    Updated: 2012-07-24 14:00:00
    Author(s): Bruno Macke and Bernard SégardThis article mainly deals with the propagation of step-modulated light pulses in a dense Lorentz medium at distances such that the medium is opaque in a broad spectral region including the carrier frequency. The transmitted field is then reduced to the celebrated precursors of Sommerfeld and Brillou...[Phys. Rev. A 86, 013837] Published Tue Jul 24, 2012

  • Strong coupling of two quantum emitters to a single light mode: The dissipative Tavis-Cummings ladder

    Updated: 2012-07-23 14:00:00
    Author(s): Nicolás QuesadaA criterion for strong coupling between two quantum emitters and a single resonant light mode in a cavity is presented. The criterion takes into account the escape of cavity photons and the spontaneous emission of the emitters, which are modeled as two-level systems. By using such a criterion, the d...[Phys. Rev. A 86, 013836] Published Mon Jul 23, 2012

  • Filamentation-assisted self-compression of subpetawatt laser pulses to relativistic-intensity subcycle field waveforms

    Updated: 2012-07-23 14:00:00
    Author(s): P. A. Zhokhov, V. Ya. Panchenko, and A. M. ZheltikovFilamentation-assisted spatiotemporal dynamics of ultrashort laser pulses in the regime of extreme light powers is shown to enable self-compression of subpetawatt laser pulses to relativistic field intensities and subcycle pulse widths. Our supercomputer simulations demonstrate compression of 6-J, 3...[Phys. Rev. A 86, 013835] Published Mon Jul 23, 2012

  • Selective excitation with shaped pulses transported through a fiber using reverse propagation

    Updated: 2012-07-23 14:00:00
    Author(s): Monika Pawłowska, Georg Achazi, Nona Rahmat, Alexander Patas, and Albrecht LindingerReverse propagation is a numeric technique that makes it possible to obtain arbitrarily shaped pulses after propagation through a fiber in the nonlinear regime. We apply it to achieve selective two-photon excitation of dyes that have overlapping absorption spectra with pulses transported through the...[Phys. Rev. A 86, 013834] Published Mon Jul 23, 2012

  • Photonic quantum memory in two-level ensembles based on modulating the refractive index in time: Equivalence to gradient echo memory

    Updated: 2012-07-23 14:00:00
    Author(s): James Clark, Khabat Heshami, and Christoph SimonWe present a quantum memory protocol that allows us to store light in ensembles of two-level atoms, e.g., rare-earth-metal ions doped into a crystal, by modulating the refractive index of the host medium of the atoms linearly in time. We show that under certain conditions the resulting dynamics is e...[Phys. Rev. A 86, 013833] Published Mon Jul 23, 2012

  • Double symmetry breaking and two-dimensional quantum phase diagram in spin-boson systems

    Updated: 2012-07-23 14:00:00
    Author(s): Pierre Nataf, Alexandre Baksic, and Cristiano CiutiThe quantum ground-state and excitation properties of two independent chains of pseudospins (two-level systems) interacting with the same bosonic field are theoretically investigated. Each chain is coupled to a different quadrature of the field, leading to two independent symmetry breakings for incr...[Phys. Rev. A 86, 013832] Published Mon Jul 23, 2012

  • Localization of photon bunching with thermal light

    Updated: 2012-07-23 14:00:00
    Author(s): De-Zhong Cao, Hui-Fen Tian, Bao-Long Xu, Su-Heng Zhang, and Kaige WangWe propose an experimental scheme in which two orthogonally polarized thermal light beams with antisymmetrical wavefronts are overlapped. The experimental results demonstrate that this setup can focus the beam in two-photon and multiphoton correlation measurements. The focused “two-photon” spot poss...[Phys. Rev. A 86, 013831] Published Mon Jul 23, 2012

  • Dynamics of optomechanical spatial solitons in dual-nanoweb structures

    Updated: 2012-07-20 14:00:00
    Author(s): C. Conti, A. Butsch, F. Biancalana, and P. St. J. RussellWe theoretically investigate the stability and dynamics of self-channeled beams that form via nonlocal optomechanical interactions in dual-nanoweb microstructured fibers. These beams represent a class of spatial soliton.[Phys. Rev. A 86, 013830] Published Fri Jul 20, 2012

  • The physics of swimming

    Updated: 2012-07-19 09:30:42
    Part of our video series on the science and technology of professional sport

  • Modelling of capacitive and resistive devices

    Updated: 2012-07-16 11:35:35
    Register now: Thursday 16 August A webinar sponsored by COMSOL

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