Generation of four-atom cluster states in thermal cavity and implementing remote controlled not gate |
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Authors: | Yang Rong-Can Li Hong-Cai Chen Mei-Xiang and Lin Xiu |
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Institution: | School of Physics and OptoElectronics Technology, Fujian Normal University, Fuzhou 350007, China |
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Abstract: | We propose an experimentally feasible scheme for preparing a four-atom cluster state
in a thermal cavity. In the scheme, the cavity field is only virtually excited and
the photon-number-dependent part in the effective Hamiltonian is cancelled so that
the system is insensitive to the cavity decay and the thermal field. At the same
time, the scheme can be generalized to prepare n-atom cluster states with the
success probability 100\%. In addition, using the four-atom cluster state, we also
propose a simpler scheme for implementing a remote--controlled not gate (CNOT)
without the Bell states measurement. |
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Keywords: | atomic cluster states two-level
atom thermal cavity remote CNOT gate |
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