Physics – Quantum Physics
Scientific paper
2005-03-04
Phys. Rev. A 72, 022334 (2005)
Physics
Quantum Physics
REVTeX4, 14 pages with 21 figures
Scientific paper
10.1103/PhysRevA.72.022334
We study the measurement-induced non-Gaussian operation on the single- and two-mode \textit{Gaussian} squeezed vacuum states with beam splitters and on-off type photon detectors, with which \textit{mixed non-Gaussian} states are generally obtained in the conditional process. It is known that the entanglement can be enhanced via this non-Gaussian operation on the two-mode squeezed vacuum state. We show that, in the range of practical squeezing parameters, the conditional outputs are still close to Gaussian states, but their second order variances of quantum fluctuations and correlations are effectively suppressed and enhanced, respectively. To investigate an operational meaning of these states, especially entangled states, we also evaluate the quantum dense coding scheme from the viewpoint of the mutual information, and we show that non-Gaussian entangled state can be advantageous compared with the original two-mode squeezed state.
Kitagawa Akira
Sasaki Masahide
Takeoka Masahiro
Wakui Kentaro
No associations
LandOfFree
Effective squeezing enhancement via measurement-induced non-Gaussian operation and its application to dense coding scheme does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Effective squeezing enhancement via measurement-induced non-Gaussian operation and its application to dense coding scheme, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effective squeezing enhancement via measurement-induced non-Gaussian operation and its application to dense coding scheme will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-201407