Zobrazeno 1 - 10
of 176
pro vyhledávání: '"Dakna, M"'
Publikováno v:
Phys. Rev. A 62, 063811 (2000)
We discuss the possibility of sampling exponential moments of the canonical phase from the s-parametrized phase space functions. We show that the sampling kernels exist and are well-behaved for any s>-1, whereas for s=-1 the kernels diverge in the or
Externí odkaz:
http://arxiv.org/abs/quant-ph/0004059
Publikováno v:
Eur. Phys. J. D 15, 393 (2001).
Cooperative effects in the fluorescence of two dipole-interacting atoms, with macroscopic quantum jumps (light and dark periods), are investigated. The transition rates between different intensity periods are calculated in closed form and are used to
Externí odkaz:
http://arxiv.org/abs/quant-ph/0002093
Publikováno v:
Opt. Commun. 179, 189 (2000)
We propose a detection scheme for measuring the overlap of the quantum state of a weakly excited traveling-field mode with a desired reference quantum state, by successive mixing the signal mode with modes prepared in coherent states and performing p
Externí odkaz:
http://arxiv.org/abs/quant-ph/9910029
Publikováno v:
Acta Phys. Slov. 49, 653 (1999)
The generation of arbitrary single-mode quantum states from the vacuum by alternate coherent displacement and photon adding as well as the measurement of the overlap of a signal with an arbitrarily chosen quantum state are studied. With regard to imp
Externí odkaz:
http://arxiv.org/abs/quant-ph/9905085
Using conditional measurement on a beam splitter, we study the transformation of the quantum state of the signal mode within the concept of two-port non-unitary transformation. Allowing for arbitrary quantum states of both the input reference mode an
Externí odkaz:
http://arxiv.org/abs/quant-ph/9811063
We show that any single-mode quantum state can be generated from the vacuum by alternate application of the coherent displacement operator and the creation operator. We propose an experimental implementation of the scheme for traveling optical fields
Externí odkaz:
http://arxiv.org/abs/quant-ph/9807089
Preparation of Schr\"odinger-cat-like states via conditional output measurement on a beam splitter is studied. In the scheme, a mode prepared in a squeezed vacuum is mixed with a mode prepared in a Fock state and photocounting is performed in one of
Externí odkaz:
http://arxiv.org/abs/quant-ph/9805048
State preparation via conditional output measurement on a beam splitter is studied, assuming the signal mode is mixed with a mode prepared in a Fock state and photon numbers are measured in one of the output channels. It is shown that the mode in the
Externí odkaz:
http://arxiv.org/abs/quant-ph/9803077
We directly sample the exponential moments of the canonical phase for various quantum states from the homodyne output. The method enables us to study the phase properties experimentally, without making the detour via reconstructing the density matrix
Externí odkaz:
http://arxiv.org/abs/quant-ph/9802023
It is shown that the exponential moments of the canonical phase can be directly sampled from the data recorded in balanced homodyne detection. Analytical expressions for the sampling functions are derived, which are valid for arbitrary states and bri
Externí odkaz:
http://arxiv.org/abs/quant-ph/9708039