期刊论文

中文

光电子·激光

1005-0086

2001

12

1

95-97

10.3321/j.issn:1005-0086.2001.01.028

本校为第一机构

本文将两能级原子视 为量子位。当量子位置于外部环境(热库)中，研究两个量子位约化密度矩阵非对角元的时间 演化，分析量子位消相干规律。如果仅考虑振幅阻尼，结果表明热辐射与量子噪声对量子位 的消相干产生影响。

The two-level atom is regarded as qua ntum-bit.We study quantum-bit reducible density rectangular array when the qua ntum-bit are put in a thermal reservoir.The time evolution properties of non-o pposite angle element of rectangular array are obtained and decoherence of quant um-bit is analyzed.The results show the thermal radiation and quantum noise can influence the qubits decoherence when amp...