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Journal of the Optical Society of America B

Journal of the Optical Society of America B



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Early Posting

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(EPR2014) EPR-Steering measure for two-mode continuous variable states

  • Gerardo Adesso and Ioannis Kogias
  • received 11/04/2014; accepted 02/17/2015; posted 02/18/2015; Doc. ID 226163
  • [full text: PDF (498) KB)]
  • Abstract: Steering is a manifestation of quantum correlations that embodies the Einstein-Podolsky-Rosen (EPR) paradox. While there have been recent attempts to quantify steering, continuous variable systems remained elusive. We introduce a steering measure for two-mode continuous variable systems that is valid for arbitrary states. The measure is based on the violation of an optimized variance test for the EPR paradox, and admits a computable and experimentally friendly lower bound only depending on the second moments of the state, which reduces to a recently proposed quantifier of steerability by Gaussian measurements. We further show that Gaussian states are extremal with respect to our measure, minimizing it among all continuous variable states with fixed second moments. As a byproduct of our analysis, we generalize and relate well-known EPR-steering criteria. Finally an operational interpretation is provided, as the proposed measure is shown to quantify the optimal guaranteed key rate in semi-device independent quantum key distribution.

Keywords (OCIS):

  • (120.2920) Instrumentation, measurement, and metrology : Homodyning
  • (270.6570) Quantum optics : Squeezed states
  • (000.2658) General : Fundamental tests
  • (270.5565) Quantum optics : Quantum communications
  • (270.5585) Quantum optics : Quantum information and processing

Optimizing the performance of CPML optical target for light scattering simulations

  • Snow Tseng and Sergio Cantero Clares
  • received 01/07/2015; accepted 02/17/2015; posted 02/18/2015; Doc. ID 231805
  • [full text: PDF (649) KB)]
  • Abstract: An optical target constructed by modifying the convolutional perfectly matched layers (CPML) formulation is tested for applications in light scattering simulations. The optical target is designed for finite-difference time-domain (FDTD) light scattering simulations to eliminate and isolate impinging light. The performance of the optical target under different incident light and factors affecting the absorption efficiency are analyzed. Variations of the optical target geometry are tested for optimal absorption. Simulation results show that the absorption is most effective for normally impinging light; its absorption cross-section can be effectively tuned by modifying the layers conductivity profile. In scattering simulations, the performance of such absorbing medium can effectively absorb incident light from arbitrary directions within a light scattering simulation.

Keywords (OCIS):

  • (000.4430) General : Numerical approximation and analysis
  • (290.4210) Scattering : Multiple scattering
  • (080.1753) Geometric optics : Computation methods

Quantum phase transition in a shallow one dimensional optical lattice

  • Tomasz Sowinski
  • received 11/11/2014; accepted 02/16/2015; posted 02/19/2015; Doc. ID 226555
  • [full text: PDF (501) KB)]
  • Abstract: In this article the extended Bose-Hubbard model describing ultra-cold atoms confined in a shallow, one dimensional optical lattice is introduced and studied by the exact diagonalization approach. All parameters of the model are related to the only relevant parameter controlled experimentally -- the depth of the optical potential. Changes in a shape of the insulating lobe in the phase diagram of the system are explored and the value of the critical tunneling for which the system undergoes the phase transition (from the insulating to the superfluid phase) is predicted. It is shown that the value of critical tunneling is substantially affected by the presence of the tunnelings to distant sites of the optical lattice. The results may have some importance in upcoming experiments on quantum quench through phase transition points.

Keywords (OCIS):

  • (020.1475) Atomic and molecular physics : Bose-Einstein condensates
  • (140.3325) Lasers and laser optics : Laser coupling

Short-wavelength radiation of a charge moving in the presence of a dielectric prism

  • Andrey Tyukhtin, Ekaterina Belonogaya, and Sergey Galyamin
  • received 01/05/2015; accepted 02/16/2015; posted 02/18/2015; Doc. ID 231447
  • [full text: PDF (430) KB)]
  • Abstract: The radiation of a charge moving in the presence of a large (compared with the wavelengths under consideration) dielectric prism of two dierent configurations is studied: case (I) - a charge moving in the channel and case (II) - a charge moving along the prism's border. The approximate method that combines an exact solution of certain "key problems" (without the external boundaries of the object) and the ray-optics technique for the fifield outside the prism is used. A general analytical solution of the problems is obtained, a particular case of small angles is considered, and an algorithm for computation of the radiation field is developed. The computed results are visualized in plots of the spectral density of radiation on the plane parallel to the external board of the prism. For case (I), the radiation is found to be more intensive and has a single maximum in the central plane. For case (II), the radiation can have a single maximum in the central plane (for relatively low velocities) or two lateral maxima (for an ultra-relativistic velocity).

Keywords (OCIS):

  • (080.0080) Geometric optics : Geometric optics
  • (260.2110) Physical optics : Electromagnetic optics
  • (350.5610) Other areas of optics : Radiation

Recurrence for motion of solitons of the Bose-Einstein condensate in a dynamic trap

  • Nikolay Rosanov and Nina Vysotina
  • received 01/07/2015; accepted 02/15/2015; posted 02/18/2015; Doc. ID 231587
  • [full text: PDF (538) KB)]
  • Abstract: We consider, analytically and numerically, the dynamics of an atomic Bose-Einstein condensate soliton bouncing in a magnetic or optical trap between two ideal barriers oscillating harmonically with coinciding frequency and opposite phases. There are zones of parametric instability of soliton central position in the trap for certain ranges of the frequency of barriers’ oscillations. We demonstrate the Fermi-Pasta-Ulam recurrence in the Fermi-Ulam scheme for solitons: the soliton’s deviations from the trap’s center grow and decay quasi-periodically in time. The results allow one to excite and investigate various structures of matter waves in traps and to manipulate their localization and dynamics.

Keywords (OCIS):

  • (020.0020) Atomic and molecular physics : Atomic and molecular physics
  • (020.7010) Atomic and molecular physics : Laser trapping
  • (020.1335) Atomic and molecular physics : Atom optics
  • (020.1475) Atomic and molecular physics : Bose-Einstein condensates

Dynamics and Polarization of Conventional and Spin VCSELs in the Presence of an Axial Magnetic Field

  • Rihab Al Seyab, Michael Adams, and Ian Henning
  • received 12/15/2014; accepted 02/15/2015; posted 02/18/2015; Doc. ID 230864
  • [full text: PDF (893) KB)]
  • Abstract: The spin flip model is used to investigate the effects of an axial magnetic field on the polarization and dynamics of conventional vertical cavity surface-emitting lasers (VCSELs) and spin-VCSELs where polarized optical pumping is used to inject a spin-polarized electron population. It is found that the ratio of the circular birefringence caused by the magnetic field to the intrinsic linear birefringence plays an important role in exciting oscillations in the intensities and polarization of the VCSELs studied. For a conventional VCSEL, higher values of the linear birefringence require larger axial magnetic fields to cause output power and polarization oscillations. In the case of spin-VCSELs, it is found that both magnitude and sign of the magnetic field can affect the stability and dynamics, as represented on maps in the plane of polarization ellipticity versus magnitude of the pump. A reversal in the sign of the field is equivalent to reversing the sign of the pump ellipticity. Potential applications of these effects in terms of optical oscillators and magnetic field sensors are identified.

Keywords (OCIS):

  • (140.3520) Lasers and laser optics : Lasers, injection-locked
  • (250.0250) Optoelectronics : Optoelectronics
  • (250.7260) Optoelectronics : Vertical cavity surface emitting lasers
  • (260.5430) Physical optics : Polarization

Numerical Evaluation of Irradiation Diagram by Plasmonic Gratings and Slit Apertures

  • Alessio Benedetti, Concita Sibilia, Andrea Veroli, and Fabio Antonio Bovino
  • received 11/19/2014; accepted 02/15/2015; posted 02/18/2015; Doc. ID 226683
  • [full text: PDF (2299) KB)]
  • Abstract: We describe a fast method to evaluate the far-field profile of a generic planar disposition of plasmonic gratings and slit apertures, based on the ideal decomposition of the structure into a linear array of distinct scattering elements, provided an accurate description of their plasmonic and radiating behaviors. This approach allows a fast calculation of the irradiation diagram , and has general validity for any kind of surface defects and for multiple set of gratings and slit apertures.

Keywords (OCIS):

  • (000.4430) General : Numerical approximation and analysis
  • (050.0050) Diffraction and gratings : Diffraction and gratings
  • (050.1220) Diffraction and gratings : Apertures
  • (240.6680) Optics at surfaces : Surface plasmons
  • (050.1755) Diffraction and gratings : Computational electromagnetic methods
  • (050.6624) Diffraction and gratings : Subwavelength structures

Long-lived cis state of azocarbazole dye with strong acceptor highly doped in a polymer matrix

  • Yutaka Kawabe, Toshio Yoshikawa, Masuki Kawamoto, Takashi Fujihara, Kazuhiro Tada, and Takafumi Sassa
  • received 12/15/2014; accepted 02/13/2015; posted 02/18/2015; Doc. ID 229104
  • [full text: PDF (427) KB)]
  • Abstract: In order to investigate the formation mechanism of photo-induced gratings in an azocarbazole dye 3-[(4-nitrophenyl)]azo-9H-carbazole-9-ethanol (NACzEtOH) used for dynamic hologram, temporal variation of absorption spectra were observed after optical excitation. From series of spectra obtained during recovering process, spectral components from two constituents were extracted analytically with a technique based on singular value decomposition. Two components were assigned to trans and cis states, by comparison to the theoretical prediction made with a molecular orbital method. Temporal evolution of two components indicated the existence of long-lived cis state with lifetime of 15 minutes for the most concentrated case (30 wt% dye in matrix). The results also showed that cis state relaxed to the initial state without reorientation, suggesting an essential role of cis state population in the dynamic holography system based on azocarbazoles.

Keywords (OCIS):

  • (050.1970) Diffraction and gratings : Diffractive optics
  • (160.4890) Materials : Organic materials
  • (160.5470) Materials : Polymers
  • (260.5130) Physical optics : Photochemistry
  • (300.0300) Spectroscopy : Spectroscopy

Selective control of excitation pathways of up-converted fluorescent states using a broadband laser and a spectral mask

  • Etienne Gagnon, Amy Lytle, and J. Krebs
  • received 12/10/2014; accepted 02/13/2015; posted 02/18/2015; Doc. ID 229180
  • [full text: PDF (364) KB)]
  • Abstract: We present a new technique to study materials’ response to broadband, optical excitation using up-conversion through excited state absorption. We use the broadband spectrum from an ultrafast laser coupled to a spectral shaper to manipulate our excitation bandwidth and selectively control which transitions occur in the ground state and excited state absorptions. By analyzing the effects of spectral shaping of the excitation laser on the emission yield of fluorescent light, we can test models of the electron population densities and transition probabilities to recover electron energy-level-specific information about the system being studied. Here, we apply this technique to Y2O3:Er3+ .

Keywords (OCIS):

  • (140.7090) Lasers and laser optics : Ultrafast lasers
  • (300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
  • (300.6360) Spectroscopy : Spectroscopy, laser

Radiation from Free Electrons in a Laser Focus at 10¹⁸W/cm²: modeling of photon yields and required focal conditions

  • Michael Ware, Justin Peatross, Eric Cunningham, Grayson Tarbox, and Ryan Sandberg
  • received 12/23/2014; accepted 02/13/2015; posted 02/18/2015; Doc. ID 231361
  • [full text: PDF (946) KB)]
  • Abstract: In support of an experiment designed to measure the strength of radiation scattered from low-density free electrons in an intense laser focus, we explore a variety of physical parameters that impact the rate of scattered photons. We employ a classical model to characterize duration of electron exposure to high-intensity laser light in a situation where the electrons are driven by strong ponderomotive gradients. Free electrons are modeled as being donated by low-density helium, which undergoes strong-field ionization early on in the pulse or during a pre pulse. When exposed to relativistic intensities, free electrons experience a Lorentz drift that causes redshifting of the scattered 800 nm light. This redshift can be used as a key signature to discern light scattered from the more intense regions of the focus. We characterize the focal volume of initial positions leading to significant redshifting, given a peak intensity of $2\times10^{18}$~W/cm$^2$. Under this scenario, the beam waist needs to be larger than several wavelengths for a pulse duration of 35~fs. We compute the rate of redshifted scattered photons from an ensemble of electrons distributed throughout the focus and relate the result to the scattered-photon rate of a single electron. We also estimate to what extent the ionization process may produce unwanted light in the redshifted spectral region.

Keywords (OCIS):

  • (000.1600) General : Classical and quantum physics
  • (020.5580) Atomic and molecular physics : Quantum electrodynamics
  • (120.5820) Instrumentation, measurement, and metrology : Scattering measurements
  • (350.5720) Other areas of optics : Relativity

(OCT2015) Storage time of cold Rb atoms in an optical dipole trap formed by a multimode fiber laser

  • Ite Yu, Weilun Hung, Panpan Huang, Feng-Chuan Wu, Hau-Yl Xiao, Martins Bruvelis, and Aigars Ekers
  • received 01/09/2015; accepted 02/12/2015; posted 02/12/2015; Doc. ID 231992
  • [full text: PDF (441) KB)]
  • Abstract: We systematically studied the storage time of Rb-87 atoms in an optical dipole trap (ODT) formed by a multimode fiber laser. Storage time is an important parameter in cold atom experiments. If atoms are prepared in the hyperfine state |F=2>, hyperfine-state-changing collisions can transfer these atoms from |F=2> to |F=1>, whereby the released kinetic energy leads to considerable trap loss. In most ODT experiments, atoms are prepared in the hyperfine state |F=1>. However, two-photon Raman transitions induced by high-power multimode fiber lasers can optically pump these atoms from |F=1> to |F=2> and the following hyperfine-state-changing collision results in the trap loss. In this work, our experimental data indicate that both the two-photon Raman transition and the hyperfine-state-changing collision can be inhibited if the atoms are prepared in the single Zeeman sublevel of |F=2,m=2> (or |F=2,m=-2>) and an auxiliary magnetic field is applied.

Keywords (OCIS):

  • (020.2070) Atomic and molecular physics : Effects of collisions
  • (020.7010) Atomic and molecular physics : Laser trapping
  • (190.5650) Nonlinear optics : Raman effect

Computational toolbox for optical tweezers in geometrical optics

  • Agnese Callegari, Giovanni Volpe, Mite Mijalkov, and Burak Gokoz
  • received 01/09/2015; accepted 02/12/2015; posted 02/19/2015; Doc. ID 232002
  • [full text: PDF (865) KB)]
  • Abstract: Optical tweezers have found widespread application in many fields, from physics to biology. Here, we explain in detail how optical forces and torques can be described within the geometrical optics approximation and we show that this approximation provides reliable results in agreement with experiments for particles whose characteristic dimensions are larger than the wavelength of the trapping light. Furthermore, we provide an object-oriented software package implemented in MatLab for the calculation of optical forces and torques in the geometrical optics regime: \texttt{OTGO - Optical Tweezers in Geometrical Optics}. We provide all source codes for \texttt{OTGO} as well as the documentation and code examples -- e.g., standard optical tweezers, optical tweezers with elongated particle, windmill effect, Kramers transitions between two optical traps -- necessary to enable users to effectively employ it in their research.

Keywords (OCIS):

  • (140.7010) Lasers and laser optics : Laser trapping
  • (080.1753) Geometric optics : Computation methods
  • (350.4855) Other areas of optics : Optical tweezers or optical manipulation

(EPR2014) Asymmetric quantum network based on multipartite Einstein-Podolsky-Rosen steering

  • qiongyi he, MENG WANG, Qihuang Gong, and Yu Xiang
  • received 11/04/2014; accepted 02/11/2015; posted 02/12/2015; Doc. ID 226128
  • [full text: PDF (1510) KB)]
  • Abstract: The inherently asymmetric nature of the Einstein-Podolsky-Rosen steering has recently been extended to the multipartite system and proved to be essential for future quantum networks. In this paper, we propose an asymmetric multi-user access optical network with hierarchical structure in terms of steering ability. The N-partite system is generated by mixing two squeezed lights and N-2 vacuum modes at N-1 beam splitters. The asymmetry of this system can be constructed by choosing proper reflectivities of beam splitters and introducing asymmetric loss to channels of the network, such that the steering ability is distributed asymmetrically among users. By proper construction, one superior in the network possesses higher steering ability than anyone of the remaining N-1 subordinates. We show how to accomplish the directional quantum steering between them, i.e. superior can apparently steer any subordinate's state, but it cannot always happen in opposite direction. In addition, we quantify the thresholds of loss tolerance that will prevent from extracting information of superior by M\ (1\leq M\leq N-1) subordinates' local measurements. An important feature of such a network is that the superior can send a secret message to certain subordinates without trustworthy assumptions about them and their apparatus. Our findings have applications in one-sided device-independent quantum communication protocol with multi-users.

Keywords (OCIS):

  • (270.5565) Quantum optics : Quantum communications
  • (270.5568) Quantum optics : Quantum cryptography
  • (270.5585) Quantum optics : Quantum information and processing

Modelling and experiments of self-reflectivity under femtosecond ablation conditions

  • Denise Krol, Dries van Oosten, Jaap Dijkhuis, Stephan Wolbers, and Hao Zhang
  • received 12/17/2014; accepted 02/09/2015; posted 02/09/2015; Doc. ID 230539
  • [full text: PDF (1050) KB)]
  • Abstract: We present a numerical model which describes the propagation of a single femtosecond laser pulse in a medium of which the optical properties dynamically change within the duration of the pulse. We use a Finite Difference Time Domain (FDTD) method to solve the Maxwell's equations coupled to equations describing the changes in the material properties. We use the model to simulate the self-reflectivity of strongly focused femtosecond laser pulses on silicon and gold under laser ablation condition. We compare the simulations to experimental results and fifind excellent agreement.

Keywords (OCIS):

  • (140.3390) Lasers and laser optics : Laser materials processing
  • (320.2250) Ultrafast optics : Femtosecond phenomena

(***)Investigation of defect cavities formed in three-dimensional woodpile photonic crystals

  • Mike Taverne, Ying-Lung Ho, and John Rarity
  • received 11/19/2014; accepted 02/08/2015; posted 02/09/2015; Doc. ID 225725
  • [full text: PDF (5140) KB)]
  • Abstract: We report the optimisation of optical properties of single defects in three-dimensional (3D) face-centred-cubic (FCC) woodpile photonic crystal (PC) cavities by using plane-wave expansion (PWE) and finite-difference time-domain (FDTD) methods. By optimising the dimensions of a 3D woodpile PC, wide photonic band gaps (PBG) are created. Optical cavities with resonances in the bandgap arise when point defects are introduced in the crystal. Three types of single defects are investigated in high refractive index contrast (Gallium Phosphide-Air) woodpile structures and Q-factors and mode volumes (Veff ) of the resonant cavity modes are calculated. We show that, by introducing an air buffer around a single defect, smaller mode volumes can be obtained. We demonstrate high Q-factors up to 700000 and cavity volumes down to Veff < 0.2(λ/n)³. The estimates of Q and Veff are then used to quantify the enhancement of spontaneous emission and the possibility of achieving strong coupling with nitrogen-vacancy (NV) colour centres in diamond.

Keywords (OCIS):

  • (020.5580) Atomic and molecular physics : Quantum electrodynamics
  • (140.3945) Lasers and laser optics : Microcavities
  • (350.4238) Other areas of optics : Nanophotonics and photonic crystals
  • (050.5298) Diffraction and gratings : Photonic crystals

Extremely high efficiency in arbitrarily oriented single molecule fluorescent imaging

  • Stepan Boichenko and Katharina Koenig
  • received 12/04/2014; accepted 02/08/2015; posted 02/09/2015; Doc. ID 229154
  • [full text: PDF (719) KB)]
  • Abstract: We demonstrate a technique allowing highly efficient observation of all single-molecule emitters in the same fluorescent image regardless of orientations of their transition dipole moments by computational methods. To perform this technique, we combine near-unity collection efficiency for an arbitrarily oriented emitter and elimination of dependence of excitation efficiency on the emitter’s orientation. The former task is solved by placing the emitter in a special metallo-dielectric antenna [X.-W. Chen et al., Opt. Lett. 36, 3545 (2011)]; the latter, by means of laser-scanning confocal fluorescence microscopy using elliptically polarized cylindrical vector beams [S.V. Boichenko & E.F. Martynovich, JETP Lett. 97, 52 (2013)]. We present conditions under which collection efficiency for arbitrarily oriented emitters is >98% and excitation efficiency of an emitter of minimally excitable orientation amounts >92% of excitation efficiency of an emitter of maximally excitable orientation when the emitters are excited with any wavelength from the spectral range 0.4-1.0 μm and emitting any fluorescent spectra in this spectral range.

Keywords (OCIS):

  • (110.2990) Imaging systems : Image formation theory
  • (180.0180) Microscopy : Microscopy
  • (180.1790) Microscopy : Confocal microscopy
  • (180.2520) Microscopy : Fluorescence microscopy
  • (180.5810) Microscopy : Scanning microscopy

Photonic Quadrature-Wave Pulses Generated by a Single Electro-optic Waveguide Modulator for Digital Transmission

  • Andre Vatarescu
  • received 10/30/2014; accepted 02/06/2015; posted 02/11/2015; Doc. ID 226050
  • [full text: PDF (522) KB)]
  • Abstract: The operation of an electro-optic modulator is described in the frequency domain through parametric interactions mixing optical and microwave photons. A single electro-optic waveguide generates quadrature-wave pulses through the second-order parametric conversion of photons induced by a baseband Fourier microwave (RF) spectrum. The peak amplitude of the optical pulse is obtained from the input amplitude of an unmodulated pump by means of a phasor-like conversion.

Keywords (OCIS):

  • (060.4510) Fiber optics and optical communications : Optical communications
  • (230.2090) Optical devices : Electro-optical devices
  • (230.4110) Optical devices : Modulators

Spectral properties of broadband biphotons generated from PPMgSLT under a type-II phase-matching condition

  • Ryosuke Shimizu and NANDAN BISHT
  • received 09/22/2014; accepted 02/06/2015; posted 02/12/2015; Doc. ID 216760
  • [full text: PDF (831) KB)]
  • Abstract: We report the spectral properties of broadband biphotons generated by pulsed type-II spontaneous parametric down-conversion based on a periodically poled MgO-doped stoichiometric LiTaO3 (PPMgSLT). Spectroscopic and interferometric measurements were used to characterize the biphoton source. For the spectroscopic measurements, we used conventional spectroscopy and joint spectral intensity measurements. For the interferometric measurements, sum- and difference-frequency two-photon interference experiments were performed to estimate the spectral correlation and to ensure the broadband nature of biphotons, respectively. When using a picosecond Ti:sapphire as a pump source, the spectral width of biphotons was over 40 nm. Finally, we demonstrated the relationship between the two-photon interference visibility and the symmetricity of the joint spectral distribution.

Keywords (OCIS):

  • (270.0270) Quantum optics : Quantum optics
  • (270.4180) Quantum optics : Multiphoton processes
  • (300.6300) Spectroscopy : Spectroscopy, Fourier transforms
  • (300.6410) Spectroscopy : Spectroscopy, multiphoton

Enhanced absorption efficiency of ultrathin metamaterial solar absorbers by plasmonic Fano resonance

  • Khai Le and Jing Bai
  • received 11/11/2014; accepted 02/04/2015; posted 02/06/2015; Doc. ID 226684
  • [full text: PDF (1298) KB)]
  • Abstract: We demonstrate a proof of principle that plasmonic Fano resonance can provide a complementary enhancement mechanism boosting the absorption efficiency of thin metamaterial solar absorbers over a wide angle of incidence under both transverse electric (TE) and magnetic(TM) polarizations. Fano resonances are induced in arrays of two asymmetric metallic nanodimers coupled to a metallic layer through an intermediate insulator thin-film. The resulting moderate resonant peaks shown in the scattering spectrum are predicted to play a dominant role in light-trapping enhancement.

Keywords (OCIS):

  • (240.6680) Optics at surfaces : Surface plasmons
  • (260.5740) Physical optics : Resonance
  • (290.0290) Scattering : Scattering
  • (310.3915) Thin films : Metallic, opaque, and absorbing coatings
  • (160.3918) Materials : Metamaterials


Engineering optomechanical normal modes for single phonon transfer and entanglement preparation

  • Gui Lu Long, Fuchuan Lei, Ming Gao, Chunguang Du, Shi-Yao Hou, and xu yang
  • received 11/03/2014; accepted 01/27/2015; posted 02/11/2015; Doc. ID 226006
  • [full text: PDF (3701) KB)]
  • Abstract: We propose a scheme that exploits the effect of normal mode splitting in three-mode optomechanical system to manipulate phonons in single-excitation level. The three normal modes of the optomechanical system are formed by coupling two mechanical modes to a cavity mode which is driven by a strong red-detuned pump field via radiation pressure. It is shown that the Landau-Zener dynamics of the three normal modes configuration is versatile for quantum information engineering. Explicitly, we show that it is feasible to transfer single phonon between two mechanical modes with distinct frequencies, and an entangled W state among the three modes can be prepared. The effect of damping is analysed by numerical simulation, which confirms the validity of our proposal.

Keywords (OCIS):

  • (270.5585) Quantum optics : Quantum information and processing
  • (120.4880) Instrumentation, measurement, and metrology : Optomechanics

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