Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Praxmeyer, Ludmila"'
Publikováno v:
Int. J. Mod. Phys. B 32, 1850276 (2018)
The Wigner-Weyl transform and phase space formulation of a density matrix approach are applied to a non-Hermitian model which is quadratic in positions and momenta. We show that in the presence of a quantum environment or reservoir, mean lifetime and
Externí odkaz:
http://arxiv.org/abs/1910.02298
Publikováno v:
Physical Review A 93, 042122 (2016)
We present a phase space study of non-Hermitian Hamiltonian with $\mathcal{PT}$-symmetry based on the Wigner distribution function. For an arbitrary complex potential, we derive a generalized continuity equation for the Wigner function flow and calcu
Externí odkaz:
http://arxiv.org/abs/1604.08405
Autor:
Praxmeyer, Ludmila
We analyze condition of orthogonality between optical Schrodinger cat-like-states constructed as superposition of two coherent states. We show that the orthogonality condition leads to quantization of values of a naturally emerging symplectic form, w
Externí odkaz:
http://arxiv.org/abs/1511.04826
Publikováno v:
Phys. Rev. A 93, 053835 (2016)
Exploiting the correspondence between Wigner distribution function and a frequency-resolved optical gating (FROG) measurement, we experimentally demonstrate existence of the chessboard-like interference patterns with a time-bandwidth product smaller
Externí odkaz:
http://arxiv.org/abs/1505.07318
Autor:
Praxmeyer, Ludmiła
We present the analysis of behavior of N identical finite time memories with the imperfections characterized by a step-function model, based on a study of independent copies of the geometric distribution. We show a step-by-step derivation of a formul
Externí odkaz:
http://arxiv.org/abs/1309.3407
Publikováno v:
Phys. Rev. A 83, 012323 (2011)
We present a detailed rate analysis for a hybrid quantum repeater assuming perfect memories and using optimal probabilistic entanglement generation and deterministic swapping routines. The hybrid quantum repeater protocol is based on atomic qubit-ent
Externí odkaz:
http://arxiv.org/abs/1010.0106
Autor:
Praxmeyer, Ludmila, van Loock, Peter
We show how to distribute with percentage success probabilities almost perfectly entangled qubit memory pairs over repeater channel segments of the order of the optical attenuation distance. In addition to some weak, dispersive light-matter interacti
Externí odkaz:
http://arxiv.org/abs/0912.1522
Publikováno v:
Phys. Rev. Lett. 98, 063901 (2007)
We present experimental data of the frequency resolved optical gating (FROG) measurements of light pulses revealing interference features corresponding to sub-Planck structures in phase space. For superpositions of pulses a small, sub-Fourier shift i
Externí odkaz:
http://arxiv.org/abs/physics/0607141
Publikováno v:
Laser Physics, vol. 15, No. 10, 1477, (2005)
The connection between the time-dependent physical spectrum of light and the phase space overlap of Wigner functions is investigated for optical pulses. Time and frequency properties of optical pulses with chirp are analyzed using the phase space Wig
Externí odkaz:
http://arxiv.org/abs/physics/0502079
Akademický článek
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