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

Published

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

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 March 1, 2024)
Created June 3, 2004, Updated November 10, 2018