Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Daffer, Sonja"'
Autor:
Daffer, Sonja, Knight, Peter L.
Publikováno v:
Phys. Rev. A 72, 032509 (2005)
We present a protocol that produces a conditionally prepared state that can be used for a Bell test based on homodyne detection. Based on the results of Munro [PRA 1999], the state is near-optimal for Bell-inequality violations based on quadrature-ph
Externí odkaz:
http://arxiv.org/abs/quant-ph/0504084
Publikováno v:
J. Mod. Optics 51, 1843 (2004)
The phenomenological dissipation of the Bloch equations is reexamined in the context of completely positive maps. Such maps occur if the dissipation arises from a reduction of a unitary evolution of a system coupled to a reservoir. In such a case the
Externí odkaz:
http://arxiv.org/abs/quant-ph/0401177
Publikováno v:
Phys. Rev. A 70, 010304 (2004)
The prevailing description for dissipative quantum dynamics is given by the Lindblad form of a Markovian master equation, used under the assumption that memory effects are negligible. However, in certain physical situations, the master equation is es
Externí odkaz:
http://arxiv.org/abs/quant-ph/0309081
Publikováno v:
Phys. Rev. A 68, 012104 (2003)
We examine the quantum states produced through parametric amplification with internal quantum noise. The internal diffusion arises by coupling both modes of light to a reservoir for the duration of the interaction time. The Wigner function for the di
Externí odkaz:
http://arxiv.org/abs/quant-ph/0302147
Publikováno v:
PRA 67, 062312 (2003)
We examine stochastic maps in the context of quantum optics. Making use of the master equation, the damping basis, and the Bloch picture we calculate a non-unital, completely positive, trace-preserving map with unequal damping eigenvalues. This resul
Externí odkaz:
http://arxiv.org/abs/quant-ph/0211001