Control of exciton dynamics in nanodots for quantum operations

被引：176
作者：
Chen, PC [1 ]
Piermarocchi, C [1 ]
Sham, LJ [1 ]
机构：
[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 06期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.87.067401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present a theory to further a new perspective of proactive control of exciton dynamics in the quantum limit. Circularly polarized optical pulses in a semiconductor nanodot are used to control the dynamics of two interacting excitons of opposite polarizations. Shaping of femtosecond laser pulses keeps the quantum operation within the decoherence time. Computation of the fidelity of the operations and application to the complete solution of a minimal quantum computing algorithm demonstrate in theory the feasibility of quantum control.
引用
收藏
页码：67401 / 1
页数：4
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