Evolution of Number State to Density Operator of Binomial Distribution in the Amplitude Dissipative Channel
FAN Hong-Yi1,2; REN Gang1
1Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026 2Department of Physics, Shanghai Jiao Tong University, Shanghai 200030
Evolution of Number State to Density Operator of Binomial Distribution in the Amplitude Dissipative Channel
FAN Hong-Yi1,2; REN Gang1
1Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026 2Department of Physics, Shanghai Jiao Tong University, Shanghai 200030
摘要We show that passing through the amplitude dissipative channel the initial pure number state density operator is evolved into the density operator of binomial distribution (a mixed state), and the binomial distribution parameter is just equal to e-2kt,where κ is the dissipative parameter of the channel. We solve the corresponding master equation to obtain the operator-sum representation of the density operator by virtue of the entangled state representation, which seems to be a convenient approach.
Abstract：We show that passing through the amplitude dissipative channel the initial pure number state density operator is evolved into the density operator of binomial distribution (a mixed state), and the binomial distribution parameter is just equal to e-2kt,where κ is the dissipative parameter of the channel. We solve the corresponding master equation to obtain the operator-sum representation of the density operator by virtue of the entangled state representation, which seems to be a convenient approach.
FAN Hong-Yi;REN Gang. Evolution of Number State to Density Operator of Binomial Distribution in the Amplitude Dissipative Channel[J]. 中国物理快报, 2010, 27(5): 50302-050302.
FAN Hong-Yi, REN Gang. Evolution of Number State to Density Operator of Binomial Distribution in the Amplitude Dissipative Channel. Chin. Phys. Lett., 2010, 27(5): 50302-050302.
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2010, Vol. 27 
