## Creation of four-mode weighted cluster states with atomic ensembles in high-Q ring cavities |

Optics Express, Vol. 20, Issue 3, pp. 3176-3191 (2012)

http://dx.doi.org/10.1364/OE.20.003176

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### Abstract

Two schemes for the preparation of weighted continuous variable cluster states with four atomic ensembles are proposed. In the first scheme, the four separated atomic ensembles inside a two-mode ring cavity are driven by pulse laser fields. The basic idea of the scheme is to transfer the ensemble bosonic modes into suitable linear combinations that can be prepared in a pure cluster state by a sequential application of the laser pulses with the aid of the cavity dissipation. In the second one, we take two separate two-mode cavities, each containing two atomic ensembles. The distant cavities are coupled by dissipation in a cascade way. It has been found that the mixed cluster state can be produced. These schemes may contribute towards implementing continuous variable quantum computation, quantum communication and networking based on atomic ensembles.

© 2012 OSA

**OCIS Codes**

(270.0270) Quantum optics : Quantum optics

(270.6570) Quantum optics : Squeezed states

(270.5585) Quantum optics : Quantum information and processing

**ToC Category:**

Quantum Optics

**History**

Original Manuscript: October 14, 2011

Revised Manuscript: December 23, 2011

Manuscript Accepted: January 20, 2012

Published: January 26, 2012

**Citation**

Li-hui Sun, Yan-qin Chen, and Gao-xiang Li, "Creation of four-mode weighted cluster states with atomic ensembles in high-Q ring cavities," Opt. Express **20**, 3176-3191 (2012)

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-3-3176

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