Suppressing decoherence and improving entanglement by quantum-jump-based feedback control in two-level systems

被引：36

作者：

Hou, S. C. ^{[1
]}

Huang, X. L. ^{[1
]}

Yi, X. X. ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China

来源：

PHYSICAL REVIEW A | 2010年 / 82卷 / 01期

关键词：

STATE;

D O I：

10.1103/PhysRevA.82.012336

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the quantum-jump-based feedback control on the entanglement shared between two qubits with one of them subject to decoherence while the other qubit is under the control. This situation is very relevant to a quantum system consisting of nuclear and electron spins in solid states. The possibility of prolonging the coherence time of the dissipative qubit is also explored. Numerical simulations show that the quantum-jump-based feedback control can improve the entanglement between the qubits and prolong the coherence time for the qubit subject directly to decoherence.

引用

页数：6

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