• Looking at DxO ViewPoint v1.1

    Updated: 2012-12-28 00:15:44
    DxO have produced a software application and plugin (Photoshop and Lightroom) that offers some interesting correction options for image geometry. Review link: DxO Viewpoint V1.1 From my own point of view, the most interesting correction is for the distortions you get with groups of faces when shooting with a very wide angle lens. This isn’t [...]

  • Condition for resonant optical bistability

    Updated: 2012-12-27 15:00:00
    Author(s): A. V. MalyshevWe address a two-level system in an environment interacting with an electromagnetic field in the dipole approximation. The resonant optical bistability induced by local-field effects is studied by considering the relationship between the population difference and the excitation field. The diversity ...[Phys. Rev. A 86, 065804] Published Thu Dec 27, 2012

  • Propagation of subcycle pulses in a two-level medium: Area-theorem breakdown and pulse shape

    Updated: 2012-12-27 15:00:00
    Author(s): Denis V. NovitskyWe solve the problem of ultrashort pulse propagation in a two-level medium beyond the rotating-wave (RWA) and slowly varying-envelope approximations. The method of solution is based on the Maxwell-Bloch equations represented in the form that allows one to switch between RWA and general (non-RWA) cas...[Phys. Rev. A 86, 063835] Published Thu Dec 27, 2012

  • Limitations of a superchiral field

    Updated: 2012-12-27 15:00:00
    Author(s): Joseph S. Choi and Minhaeng ChoRecently, Tang and Cohen [ Y. Tang and A. E. Cohen Science 332 333 (2011)] proposed and demonstrated the use of “superchiral” electromagnetic fields to enhance optical enantioselectivity. Their work generated much excitement as enantioselective signals are typically quite small, and it appeared tha...[Phys. Rev. A 86, 063834] Published Thu Dec 27, 2012

  • Job Search Employment Optics and Photonics Career Center SPIE SPIE Career Center Biomedical Optics M

    Updated: 2012-12-27 03:20:44
    , : , , , , Create an account Sign in about SPIE contact us help shopping cart SEARCH Home Conferences Exhibitions Publications Education Membership Industry Resources Career Center News Videos Your session has expired Your session will expire in seconds Job Seekers Employers Pricing Job Fairs Salary Survey Advice Tools Receive job listings in your RSS reader Career Center For Job Seekers For Employers Home My Account Jobs Saved Jobs Help Job Detail Find other jobs Job Summary SCIENTIST I Job Code : 2012-41278 POSTED : Dec 26 : Salary Open : Location MENLO PARK , California : Employer TE Connectivity : Type Full Time Experienced : Categories Biomedical Optics Medical Imaging , Optics Employer Information About TE Connectivity With a 50-plus year history of leadership , TE Connectivity NYSE

  • Enhancing the waveguide-resonator optical force with an all-optical on-chip analog of electromagnetically induced transparency

    Updated: 2012-12-26 15:00:00
    Author(s): Varat Intaraprasonk and Shanhui FanWe demonstrate a fundamental limitation in the force enhancement in simple waveguide-resonator geometry. We also show that the all-optical analog to electromagnetically induced transparency, as observed in a waveguide-resonator geometry, can be used to drastically enhance waveguide-resonator optical...[Phys. Rev. A 86, 063833] Published Wed Dec 26, 2012

  • Time-reversing light pulses by adiabatic coupling modulation in coupled-resonator optical waveguides

    Updated: 2012-12-26 15:00:00
    Author(s): Chao Wang, Rainer Martini, and Christopher P. SearchWe introduce a mechanism to time reverse short optical pulses in coupled resonator optical waveguides (CROWs) by direct modulation of the coupling coefficients between microresonators. The coupling modulation is achieved using phase modulation of a Mach-Zehnder interferometer coupler. We demonstrate...[Phys. Rev. A 86, 063832] Published Wed Dec 26, 2012

  • Circular array of anisotropic fibers: A discrete analog of a q plate

    Updated: 2012-12-26 15:00:00
    Author(s): C. N. AlexeyevIn this paper, we have studied the propagation of light in a p array, that is, a circular array of strongly anisotropic fibers, orientation of whose anisotropy axes linearly depends on the angular position of the fiber in the array and makes an integer number of full rotations p while tracing along ...[Phys. Rev. A 86, 063830] Published Wed Dec 26, 2012

  • Optically mediated nonlinear quantum optomechanics

    Updated: 2012-12-26 15:00:00
    Author(s): H. Seok, L. F. Buchmann, S. Singh, and P. MeystreWe consider theoretically the optomechanical interaction of several mechanical modes with a single quantized cavity-field mode for linear and quadratic coupling. We focus specifically on situations where the optical dissipation is the dominant source of damping, in which case the optical field can b...[Phys. Rev. A 86, 063829] Published Wed Dec 26, 2012

  • Job Search Employment Optics and Photonics Career Center SPIE SPIE Career Center Biomedical Optics M

    Updated: 2012-12-26 03:16:04
    , : , , , , , Create an account Sign in about SPIE contact us help shopping cart SEARCH Home Conferences Exhibitions Publications Education Membership Industry Resources Career Center News Videos Your session has expired Your session will expire in seconds Job Seekers Employers Pricing Job Fairs Salary Survey Advice Tools Receive job listings in your RSS reader Career Center For Job Seekers For Employers Home My Account Jobs Saved Jobs Help Job Detail Find other jobs Job Summary Postdoctoral postion at Rice University POSTED : Dec 25 : Salary Open : Location Houston , Texas : Employer Rice University : Type Full Time Entry Level : Categories Biomedical Optics Medical Imaging , Optics , Remote Sensing Required : Education Doctorate Employer Information About Rice University William Marsh

  • Job Search Employment Optics and Photonics Career Center SPIE SPIE Career Center Lasers jobs Metrolo

    Updated: 2012-12-22 00:40:13
    , : , , , , Create an account Sign in about SPIE contact us help shopping cart SEARCH Home Conferences Exhibitions Publications Education Membership Industry Resources Career Center News Videos Your session has expired Your session will expire in seconds Job Seekers Employers Pricing Job Fairs Salary Survey Advice Tools Receive job listings in your RSS reader Career Center For Job Seekers For Employers Home My Account Jobs Saved Jobs Help Job Detail Find other jobs Job Summary OPTICAL ELECTRONIC PACKAGING ENGINEER POSTED : Dec 21 : Salary Open : Location California : Employer APIC Corporation : Type Full Time Experienced : Categories Lasers , Metrology , Optics Preferred : Education Masters Employer Information About APIC Corporation Leader in highly integrated photonics and electronic

  • Multiphoton quantum interference at a beam splitter and the approach to Heisenberg-limited interferometry

    Updated: 2012-12-21 15:00:00
    Author(s): Richard Birrittella, Jihane Mimih, and Christopher C. GerryWe study multiphoton quantum-interference effects at a beam splitter and its connection to the prospect of attaining interferometric phase-shift measurements with noise levels below the standard quantum limit. Specifically, we consider the mixing of the most classical states of light coherent states...[Phys. Rev. A 86, 063828] Published Fri Dec 21, 2012

  • Linear and nonlinear optical precursors in inhomogeneously broadened two-level media

    Updated: 2012-12-20 15:00:00
    Author(s): Robert Marskar and Ulf L. ÖsterbergBy solving the two-level Maxwell-Bloch equations for resonant pulses numerically, we observe precursors in a regime where the area theorem is fulfilled. The precursors are 0π pulses traveling at a velocity close to the speed of light, and the main signal is a self-induced transparency (SIT) 2π solit...[Phys. Rev. A 86, 063826] Published Thu Dec 20, 2012

  • Derivation of a generalized double-sine-Gordon equation describing ultrashort-soliton propagation in optical media composed of multilevel atoms

    Updated: 2012-12-20 15:00:00
    Author(s): Hervé Leblond, Houria Triki, and Dumitru MihalacheWe consider the propagation of ultrashort optical solitons in media described by a general Hamiltonian of multilevel atoms. Assuming that all transition frequencies of the medium are well below the typical wave frequency, i.e., only the contribution of infrared transitions is taken into account, we ...[Phys. Rev. A 86, 063825] Published Thu Dec 20, 2012

  • Use Your Flexible Spending Account Dollars for Hot New Eyewear

    Updated: 2012-12-19 16:17:40
    The end of the year is fast approaching, and that means that the funds which you have allocated to your Flexible Spending Account are about to expire. FSAs, or Flexible Spending Accounts, hold money that you set aside for qualified health care expenses. These qualified FSA expenses can include prescription and over the counter medications, [...]

  • Thermodynamics of quadrature trajectories in open quantum systems

    Updated: 2012-12-19 15:00:00
    Author(s): James M. Hickey, Sam Genway, Igor Lesanovsky, and Juan P. GarrahanWe apply a large-deviation method to study the diffusive trajectories of the quadratures of light emitted from open quantum systems. We formulate the study of quadrature trajectories in terms of characteristic operators and show that, in the long-time limit, the statistics of such trajectories obey ...[Phys. Rev. A 86, 063824] Published Wed Dec 19, 2012

  • Filtering of the absolute value of photon-number difference for two-mode macroscopic quantum superpositions

    Updated: 2012-12-19 15:00:00
    Author(s): M. Stobińska, F. Töppel, P. Sekatski, A. Buraczewski, M. Żukowski, M. V. Chekhova, G. Leuchs, and N. GisinWe discuss a device capable of filtering out two-mode states of light with mode populations differing by more than a certain threshold, while not revealing which mode is more populated. It would allow engineering of macroscopic quantum states of light in a way which is preserving specific superposit...[Phys. Rev. A 86, 063823] Published Wed Dec 19, 2012

  • Superradiant phase transition in a model of three-level-Λ systems interacting with two bosonic modes

    Updated: 2012-12-19 15:00:00
    Author(s): Mathias Hayn, Clive Emary, and Tobias BrandesWe consider an ensemble of three-level particles in Lambda configuration interacting with two bosonic modes. The Hamiltonian has the form of a generalized Dicke model. We show that in the thermodynamic limit this model supports a superradiant quantum phase transition. Remarkably, this can be both a ...[Phys. Rev. A 86, 063822] Published Wed Dec 19, 2012

  • All-optical event horizon in an optical analog of a Laval nozzle

    Updated: 2012-12-18 15:00:00
    Author(s): M. Elazar, V. Fleurov, and S. Bar-AdExploiting the fact that light propagation in defocusing nonlinear media can mimic the transonic flow of an equivalent fluid, we demonstrate experimentally the formation of an all-optical event horizon in a waveguide structure akin to a hydrodynamic Laval nozzle. The analog event horizon which forms...[Phys. Rev. A 86, 063821] Published Tue Dec 18, 2012

  • Book of the Year 2012

    Updated: 2012-12-18 11:00:00
    Find out which book tops our list of the year's best popular-physics titles

  • Incoherent optical control of pulse propagation and compression

    Updated: 2012-12-17 15:00:00
    Author(s): E. Ignesti, F. Tommasi, R. Buffa, L. Fini, E. Sali, M. V. Tognetti, and S. CavalieriWe present an experimental study of temporal retardation combined with temporal compression of weak laser pulses. The effect is optically controlled by the presence of another light pulse, although no coherent control is required. Probe pulse delays up to 13 ns and maximum compression factor of 3 we...[Phys. Rev. A 86, 063818] Published Mon Dec 17, 2012

  • Thermal ghost imaging with averaged speckle patterns

    Updated: 2012-12-17 15:00:00
    Author(s): Petros Zerom, Zhimin Shi, Malcolm N. O'Sullivan, Kam Wai Clifford Chan, Molly Krogstad, Jeffrey H. Shapiro, and Robert W. BoydWe present theoretical and experimental results showing that a thermal ghost imaging system can produce images of high quality even when it uses detectors so slow that they respond only to intensity-averaged (that is, “blurred”) speckle patterns, as long as the collected signal variation is predomin...[Phys. Rev. A 86, 063817] Published Mon Dec 17, 2012

  • All-optical switching in a photonic crystal with a defect containing an N-type four-level atomic system

    Updated: 2012-12-17 15:00:00
    Author(s): V. G. Arkhipkin and S. A. MyslivetsWe study the transmission spectra of a one-dimensional photonic crystal with a defect containing a four-level atomic medium that exhibits a greatly enhanced third-order susceptibility while having a vanishing linear susceptibility dependent on the electromagnetically induced transparency. Two ways o...[Phys. Rev. A 86, 063816] Published Mon Dec 17, 2012

  • Proposal for a two-qubit quantum phase gate for quantum photonic integrated circuits

    Updated: 2012-12-14 15:00:00
    Author(s): Robert Johne and Andrea FioreWe propose a protocol for a two-qubit quantum phase gate based upon the reflection of photon pulses from a quantum dot in a cavity. Depending on the state of the quantum dot the reflected photons acquire a conditional phase shift. The key ingredient is the ultrafast control of the quantum dot energi...[Phys. Rev. A 86, 063815] Published Fri Dec 14, 2012

  • X-ray multimodal imaging using a random-phase object

    Updated: 2012-12-14 15:00:00
    Author(s): Sebastien Berujon, Hongchang Wang, and Kawal SawhneyWe demonstrate an extension of the x-ray grating interferometer three modal imaging method to a generalized stepping scheme using a phase object with small, random features. The method allows the recovery of the absorption, scattering, and two-dimensional phase image of the sample from a raster scan...[Phys. Rev. A 86, 063813] Published Fri Dec 14, 2012

  • Charge-current generation in atomic systems induced by optical vortices

    Updated: 2012-12-11 15:00:00
    Author(s): K. Köksal and J. BerakdarWe envisage the possibility of producing and tuning electronic orbital currents in atoms by weak, spatially inhomogeneous laser pulses with optical vortices. As already known, when interacting with such pulses an electronic system attains a definite amount of angular momentum. Here we explore this e...<br/[Phys. Rev. A 86, 063812] Published Tue Dec 11, 2012

  • Localized waves with spherical harmonic symmetries

    Updated: 2012-12-10 15:00:00
    Author(s): M. S. Mills, G. A. Siviloglou, N. Efremidis, T. Graf, E. M. Wright, J. V. Moloney, and D. N. ChristodoulidesWe introduce a class of propagation invariant spatiotemporal optical wave packets with spherical harmonic symmetries in their field configurations. The evolution of these light orbitals is considered theoretically in anomalously dispersive media, and their spinning dynamics are analyzed in terms of ...[Phys. Rev. A 86, 063811] Published Mon Dec 10, 2012

  • Dynamical evolution of an inverted spin ensemble in a cavity: Inhomogeneous broadening as a stabilizing mechanism

    Updated: 2012-12-07 15:00:00
    Author(s): Brian Julsgaard and Klaus MølmerWe study the evolution of an inverted spin ensemble coupled to a cavity. While the inversion itself presents an inherent instability in the system, the inhomogeneous broadening of spin-resonance frequencies provides a stabilizing mechanism. The detailed behavior of mean values and variances of the s...[Phys. Rev. A 86, 063810] Published Fri Dec 07, 2012

  • India's physics rebels

    Updated: 2012-12-05 11:05:45
    A short audio documentary about the students in India who have rejected the allure of engineering to follow their hearts into fundamental science

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