The Coherence Time of Quantum Rod Qubit

被引：1
|
作者：
Cai, Chunyu [1 ]
Zhao, Cuilan [1 ]
Xiao, Jinglin [1 ]
机构：
[1] Inner Mongolia Univ Nationalities, Inst Condensed Matter Phys, Tongliao 028043, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2015年 / 54卷 / 04期
基金：
美国国家科学基金会;
关键词：
Quantum rod; Qubit; Coherence time; Pekar type variational method; ELECTRON SPINS; DOTS;
D O I：
10.1007/s10773-014-2324-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Quantum systems are usually very fragile and external fields will break the quantum coherence for information storing. Here we study the properties of coherence time (CT) of a quantum rod (QR) qubit by the Pekar type variational (PTV) method. Our numerical results show that the CT will increase with increasing QR's transverse and longitudinal effective confinement lengths (TLECLs), whereas it is a decreasing function of the ellipsoidal aspect ratio (EAR) and polaron radius (PR). Consequently, we can improve the CT by (i) increasing the TLECLs; (ii) decreasing the EAR and PR.
引用
收藏
页码：1269 / 1274
页数：6
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