Theory of damped Rabi oscillations
Theory of damped Rabi oscillations
复制标题
DOI：
10.1103/physrevb.72.172509
复制
发表时间：
2005-11-01
影响因子：
3.7
通讯作者：
Hatakenaka, N
中科院分区：
文献类型：
--
作者：
Kosugi, N;Matsuo, S;Hatakenaka, N
从理论上研究了对外部世界的衰减和内部弛豫的拉比振荡。在拉普拉斯变换技术的基础上扩展Torrey法，精确求解密度矩阵运动方程，并得到涉及不同衰减过程的通解。继Yu所展示的约瑟夫森相量子位的显着特征上，又相继解释了描述阻尼拉比振荡的特殊解。此外，还提出了一种新技术，通过使用具有不同衰减过程的阻尼振荡解的衰减率来确定所有弛豫率，包括内部弛豫率gamma(10)和纯相移率gamma(phi)。
Rabi oscillations with decays to the outside world as well as internal relaxations are theoretically studied. The density-matrix equations of motion are exactly solved by extending the Torrey method based on Laplace transform technique, and then general solutions involving different decay processes are obtained. The special solution describing damped Rabi oscillations is successively explained on the remarkable features of a Josephson phase qubit demonstrated by Yu. In addition, a new technique is proposed for determining all the relaxation rates including an internal relaxation rate gamma(10) and the pure dephasing rate gamma(phi) by using the decay rates of damped oscillating solutions with different decay processes.