Sudden death and sudden birth of entanglement in common structured reservoirs

被引：223
|
作者：
Mazzola, L. [1 ]
Maniscalco, S. [1 ]
Piilo, J. [1 ]
Suominen, K. -A. [1 ]
Garraway, B. M. [2 ]
机构：
[1] Univ Turku, Dept Phys & Astron, FI-20014 Turun, Finland
[2] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England
来源：
PHYSICAL REVIEW A | 2009年 / 79卷 / 04期
基金：
芬兰科学院;
关键词：
quantum computing; quantum entanglement; QUBITS; STATE;
D O I：
10.1103/PhysRevA.79.042302
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the exact entanglement dynamics of two qubits in a common structured reservoir. We demonstrate that for certain classes of entangled states, entanglement sudden death occurs, while for certain initially factorized states, entanglement sudden birth takes place. The backaction of the non-Markovian reservoir is responsible for revivals of entanglement after sudden death has occurred, and also for periods of disentanglement following entanglement sudden birth.
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页数：4
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