Zobrazeno 1 - 10
of 320
pro vyhledávání: '"Shresta S"'
Publikováno v:
Inf. Proc. 8, 549 (2009)
We study the non-equilibrium dynamics of a pair of qubits made of two-level atoms separated in space with distance $r$ and interacting with one common electromagnetic field but not directly with each other. Our calculation makes a weak coupling assum
Externí odkaz:
http://arxiv.org/abs/0909.0223
We study the non-equilibrium dynamics of a pair of qubits made of two-level atoms separated in space with distance r and interacting with one common electromagnetic field but not directly with each other. Our calculation makes a weak coupling assumpt
Externí odkaz:
http://arxiv.org/abs/quant-ph/0610007
A method is described for estimating effective scattering lengths via spectroscopy on a trapped pair of atoms. The method relies on the phenomena that the energy levels of two atoms in a harmonic trap are shifted by their collisional interaction. The
Externí odkaz:
http://arxiv.org/abs/quant-ph/0505102
Publikováno v:
Phys. Rev. A 71, 022109 (2005)
We study the non-Markovian dynamics of a qubit made up of a two-level atom interacting with an electromagnetic field (EMF) initially at finite temperature. Unlike most earlier studies where the bath is assumed to be fixed, we study the coherent evolu
Externí odkaz:
http://arxiv.org/abs/quant-ph/0408084
Publikováno v:
J.Opt.B quant.Semiclass.Opt.6:S698-S705,2004
In this note we report on some new results \cite{SHP} on corrections to the Casimir-Polder \cite{caspol} retardation force due to atomic motion and present a preliminary (unpublished) critique on one recently proposed cavity QED detection scheme of U
Externí odkaz:
http://arxiv.org/abs/quant-ph/0401188
Autor:
Shresta, S., Hu, B. L.
Publikováno v:
Phys. Rev. A 68, 012110 (2003)
The reduced dynamics of an atomic qubit coupled both to its own quantized center of mass motion through the spatial mode functions of the electromagnetic field, as well as the vacuum modes, is calculated in the influence functional formalism. The for
Externí odkaz:
http://arxiv.org/abs/quant-ph/0301180
Publikováno v:
Phys. Rev. A 68, 062101 (2003)
The Casimir-Polder force is an attractive force between a polarizable atom and a conducting or dielectric boundary. Its original computation was in terms of the Lamb shift of the atomic ground state in an electromagnetic field (EMF) modified by bound
Externí odkaz:
http://arxiv.org/abs/quant-ph/0302004
Autor:
Shresta, S.
A variation to the usual formulation of Grassmann representation path integrals is presented. Time-indexed anticommuting partners are introduced for each Grassmann coherent state variable and a general method for handling the effect of these introduc
Externí odkaz:
http://arxiv.org/abs/quant-ph/0104113
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Akademický článek
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