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Generation of continuous-variable quadripartite square cluster state and its entanglement improvement via quantum feedback
quantum optics continuous variable cluster state feedback
2011/12/15
In this paper, we investigate the generation of continuous-variable quadripartite square cluster state of optical fields and discuss the enhancement of the multipartite entanglement of the cluster sta...
Dephasing of multiparticle Rydberg excitations for fast entanglement generation
multiparticle Rydberg excitations fast entanglement generation Quantum Physics
2011/8/17
Abstract: An approach to fast entanglement generation based on Rydberg dephasing of collective excitations (spin-waves) in large, optically thick atomic ensembles is proposed. Long-range $1/r^3$ atomi...
Bound states in the radiation continuum and a resonant generation of second harmonics in double arrays of subwavelength dielectric cylinders
Bound states radiation continuum subwavelength dielectric cylinder second harmonics
2011/8/24
Abstract: A nonlinear electromagnetic scattering problem is studied for two parallel periodic arrays of dielectric cylinders with a second order nonlinear susceptibility. For a wide range of values of...
Cluster state generation using van der Waals and dipole-dipole interactions in optical lattices
ipole-dipole interactions optical lattices
2011/9/9
We present a scalable method for generation of a cluster state for measurement-based quantum computing using van der Waals or dipole-dipole interactions between neutral atoms or polar molecules in an ...
Quantum-Gravity Induced Lorentz Violation and Dynamical Mass Generation
Quantum-Gravity Induced Lorentz Violation Dynamical Mass Generation
2010/12/27
In Ref. [1] (by J. Alexandre) a minimal extension of (3+1)-dimensional Quantum Electrodynamics has been proposed, which includes Lorentz-Violation (LV) in the form of higher-(spatial)-derivative isotr...
Dynamical generation of pseudoscalar resonances
Dynamical generation pseudoscalar resonances
2011/1/7
We study the interactions between the f0(980) and a0(980) scalar resonances and the lightest pseudoscalar mesons. We first obtain the elementary interaction amplitudes, or interacting kernels, without...
Quantum-Gravity Induced Lorentz Violation and Dynamical Mass Generation
Quantum-Gravity Lorentz Violation Dynamical Mass Generation
2010/12/21
In Ref. [1] a minimal extension of (3+1)-dimensional Quantum Electrodynamics has been proposed, which includes Lorentz-Violation (LV) in the form of higher-(spatial)-derivative isotropic terms in the ...
Influence of asymmetry and nodal planes on high-harmonic generation in heteronuclear molecules
Influence of asymmetry nodal planes high-harmonic generation heteronuclear molecules
2010/10/21
The relation between high-harmonic spectra and the geometry of the molecular orbitals in position and momentum space is investigated. In particular we choose two isoelectronic pairs of homonuclear and...
Exhaustive Generation of Orthomodular Lattices with Exactly One Non-Quantum State
Reverse Kochen-Specker theorem Hilbert space orthomodular lattices MMP diagrams Greechie diagrams strong set of states
2010/3/10
We propose a kind of reverse Kochen-Specker theorem that amounts to generating orthomodular lattices (OMLs) with exactly one state that do not admit properties of the Hilbert space. We apply MMP algor...
Generation of macroscopic singlet states in atomic ensembles
Generation macroscopic singlet states atomic ensembles
2010/4/9
We study squeezing of the spin uncertainties by quantum non-demolition (QND) measurement in non-polarized spin ensembles. Unlike the case of polarized ensembles, the QND measurements can be performed ...
Entanglement generation by collisions of quantum solitons
Entanglement generation collisions of quantum solitons
2010/4/13
We present analytic expressions describing generation of the entanglement in collisions of initially uncorrelated quantum solitons. The results, obtained by means of the Born's approximation (for fast...
Entanglement Generation by a Three-Dimensional Qubit Scattering: Concurrence vs. Path (In)Distinguishability
Entanglement Generation Three-Dimensional Qubit Scattering Concurrence vs. Path(In)Distinguishability
2010/4/8
A scheme for generating an entangled state in a two spin-1/2 system by means of a spin-dependent potential scattering of another qubit is presented and analyzed in three dimensions. The entanglement i...
Pure single photon generation by type-I PDC with backward-wave amplification
Pure single photon type-I PDC backward-wave amplification
2010/4/8
We explore a promising method of generating pure heralded single photons. Our approach is based on parametric downconversion in a periodically-poled waveguide. However, unlike conventional downconvers...
Quantum Walk-based Generation of Entanglement Between Two Walkers
Quantum Walk-based Generation Entanglement Two Walkers
2010/4/9
Quantum walks can be used either as tools for quantum algorithm development or as entanglement generators, potentially useful to test quantum hardware. We present a novel algorithm based on a discrete...
Generation of GHZ and W states for stationary qubits in spin network via resonance scattering
Generation of GHZ W states stationary qubits spin network
2010/4/7
We propose a simple scheme to establish entanglement among stationary qubits based on the mechanism of resonance scattering between them and a single-spin-flip wave packet in designed spin network. It...