Quantum computing in the presence of spontaneous emission by a combined dynamical decoupling and quantum-error-correction strategy

被引：26
|
作者：
Khodjasteh, K
Lidar, DA
机构：
[1] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada
[2] Univ Toronto, Dept Chem, Chem Phys Theory Grp, Toronto, ON M5S 3H6, Canada
来源：
PHYSICAL REVIEW A | 2003年 / 68卷 / 02期
关键词：
D O I：
10.1103/PhysRevA.68.022322
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method for quantum computation in the presence of spontaneous emission is proposed. The method combines strong and fast (dynamical decoupling) pulses and a quantum error correcting code that encodes n logical qubits into only n+1 physical qubits. Universal, fault-tolerant, quantum computation is shown to be possible in this scheme using Hamiltonians relevant to a range of promising proposals for the physical implementation of quantum computers.
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页数：6
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