N-qubit W state of spatially separated single molecule magnets

作者：Lue Xin You; Song Pei Jun; Liu Ji Bing; Yang Xiaoxue

来源：Optics Express, 2009, 17(16): 14298-14311.

DOI：10.1364/oe.17.014298

A simple scheme is proposed to generate a N-qubit W state of spatially separated single molecule magnets (SMM) in a cavity-fiber-cavity system. In the present scheme, the framework consisting of entangled qubits can be expediently designed according to our needs. By quantitatively discussing the case of N=4, we show that the effects of SMM';s spontaneous decay and photon leakage out of fiber can be suppressed in our scheme due to the presence of virtual excited processes in SMM and fiber modes. Moreover, we also show that the present scheme is robust with respect to some deviations of experimental parameters, and as a result, the present investigation provides a research clue for realizing multi-partite entanglement between distant SMMs solid-state nanostructures, which may result in a substantial impact on the progress of multi-node quantum information network.

• 出版日期2009-8-3
• 单位湖北师范大学; 华中科技大学