Telegraph noise effects on two charge qubits in double quantum dots

被引：11
|
作者：
Ayachi, A. [1 ]
Ben Chouikha, W. [1 ]
Jaziri, S. [1 ,2 ]
Bennaceur, R. [1 ]
机构：
[1] Univ Tunis El Manar, Fac Sci Tunis, Phys Mat Condensee Lab, Tunis, Tunisia
[2] Univ Carthage, Fac Sci Bizerte, Zarzouna 7021, Bizerte, Tunisia
来源：
PHYSICAL REVIEW A | 2014年 / 89卷 / 01期
关键词：
SPINS;
D O I：
10.1103/PhysRevA.89.012330
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We analyze theoretically the decoherence of two interacting electrons in a double self-assembled quantum dot due to a random telegraph noise. For this purpose we have examined the pure dephasing rate by evaluating the decoherence factor. The latter has been shown to be different from that calculated within the Gaussian approximation in the strong coupling regime. In order to determine the influence of the random telegraph noise on the entanglement of the system states, the concurrence, the populations, and the entropy are evaluated as well. Our results show that telegraph noise can severely impact the coherence of charge qubits.
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页数：6
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