A nearly deterministic scheme for generating Χ-type entangled states with weak cross-Kerr nonlinearities

Authors:
Li Dong;Xiao-Ming Xiu;Ya-Jun Gao;X. X. Yi
Affiliations:
College of Mathematics and Physics, Bohai University, Jinzhou, People's Republic of China 121013 and School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, Peopl ...;College of Mathematics and Physics, Bohai University, Jinzhou, People's Republic of China 121013 and School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, Peopl ...;College of Mathematics and Physics, Bohai University, Jinzhou, People's Republic of China 121013;School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, People's Republic of China 116024
Venue:
Quantum Information Processing
Year:
2013

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Abstract

We propose a generation scheme of 驴-type entangled states based on weak cross-Kerr nonlinearities. After Homodyne measurement, the individual photons can be entangled together with the help of coherent states. Assisted with classical feed-forward, the generation efficiency of the entangled state nearly approaches unity. Depending on the currently available optical elements and techniques such as beam splitters, reflection mirrors, polarization beam splitters and classical feed-forward, the present scheme is expectable to realize in experiment.