Non-Markovian qubit dynamics in the presence of 1/f noise

被引：61
作者：
Burkard, Guido [1 ,2 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Theoret Phys C, D-52056 Aachen, Germany
[2] Univ Konstanz, Dept Phys, D-78457 Constance, Germany
来源：
PHYSICAL REVIEW B | 2009年 / 79卷 / 12期
关键词：
1; f noise; quantum computing; QUANTUM-STATISTICAL EQUILIBRIUM; DIMENSIONAL RADIATION-FIELD; WIGNER-WEISSKOPF ATOM; RELAXATION;
D O I：
10.1103/PhysRevB.79.125317
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Within the lowest-order Born approximation, we calculate the exact dynamics of a qubit in the presence of 1/f noise without Markov approximation. We show that the non-Markovian qubit time-evolution exhibits asymmetries and beatings that can be observed experimentally and cannot be explained within a Markovian theory. The present theory for 1/f noise is relevant for both spin- and superconducting qubit realizations in solid-state devices, where 1/f noise is ubiquitous.
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页数：6
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