Entanglement distribution using three-mode separable state with imperfect equipments

doi:10.1088/1674-1056/20/7/070306

Abstract We show a scheme to distribute the entanglement by using three-mode separable Gaussian state prepared with imperfect equipments. The scheme achieves the aim that the entanglement is distributed between two distant parties with only Gaussian operations and linear optics elements. Moreover, we analyse the logarithmic negativity of the entanglement shared between the two parties when the systems are imperfect and arrive at the conclusion that the logarithmic negativity is asymptotically stable with fluctuations within a certain space range.

Keywords: entanglement distribution separable state imperfect equipments

Received: 26 September 2010
Revised: 03 March 2011
Accepted manuscript online:

PACS:	03.67.Mn	(Entanglement measures, witnesses, and other characterizations)
	03.65.Ud	(Entanglement and quantum nonlocality)
	42.50.Dv	(Quantum state engineering and measurements)

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Song Ting-Ting(宋婷婷), Zhang Jie(张劼), Gao Fei(高飞), and Wen Qiao-Yan(温巧燕) Entanglement distribution using three-mode separable state with imperfect equipments 2011 Chin. Phys. B 20 070306

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