## Entanglement generation with coherent states using cross-Kerr nonlinearity |

JOSA B, Vol. 30, Issue 9, pp. 2393-2400 (2013)

http://dx.doi.org/10.1364/JOSAB.30.002393

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### Abstract

We propose methods for generating Bell-type entangled coherent states for quantum information processing. The protocols are completed using linear optical elements, single-photon detectors, and cross-Kerr nonlinearity. We investigate the decoherence effect on our protocols; photon loss is found to affect only the probability, not the fidelity, of the generation process. The entanglement of the generated entangled states is also analyzed using concurrence. Finally, the feasibility of our scheme is discussed using the continuous-time cross-phase modulation model. In the weak nonlinearity region, on the condition that

© 2013 Optical Society of America

**OCIS Codes**

(270.1670) Quantum optics : Coherent optical effects

(270.5585) Quantum optics : Quantum information and processing

**ToC Category:**

Quantum Optics

**History**

Original Manuscript: June 25, 2013

Manuscript Accepted: July 18, 2013

Published: August 16, 2013

**Citation**

Si Yu Song, Shuhao Wang, Guo Fu Xu, and Gui Lu Long, "Entanglement generation with coherent states using cross-Kerr nonlinearity," J. Opt. Soc. Am. B **30**, 2393-2400 (2013)

http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-9-2393

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