Preparation of multiparty entangled states using pairwise perfectly efficient single-probe photon four-wave mixing

Published

June 3, 2004

Author(s)

Lu Deng, Marvin G. Payne, Y Wu, Edward W. Hagley

Abstract

We propose a scheme to achieve multiparty entanglement with perfectly efficient, ultraslow, multichannel pairwise four-wave mixing (FWM). A cold atomic medium is illuminated with an N-mode continuous- wave (cw) control laser to produce coherent mixtures of excited states. An ultraslowly propagating, single-photon quantum probe field completes multichannel, pairwise FWM, creating a depth dependent entanglement of N Fock states. We show explicitly that this scheme can be utilized to realize an N-party entangled state of ultraslowly propagating quantized fields. In particular, we give the explicit analytical expression of a threeparty W-state propagating at an ultraslow group velocity, and the numerical results of a multiparty W state of 2M +1 Fock states.

Citation

Physical Review A

Volume

69

Issue

6

Pub Type

Journals

Download Paper

https://doi.org/10.1103/PhysRevA.69.063803

Keywords

Fock states, FWM, quantum entanglement, quantum information

Citation

Deng, L. , Payne, M. , Wu, Y. and Hagley, E. (2004), Preparation of multiparty entangled states using pairwise perfectly efficient single-probe photon four-wave mixing, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.69.063803 (Accessed May 6, 2024)