作者
LCL Hollenberg, AS Dzurak, C Wellard, AR Hamilton, DJ Reilly, GJ Milburn, RG Clark
发表日期
2004/3/11
期刊
Physical Review B
卷号
69
期号
11
页码范围
113301
出版商
American Physical Society
简介
Solid-state quantum computer architectures with qubits encoded using single atoms are now feasible given recent advances in the atomic doping of semiconductors. Here we present a charge qubit consisting of two dopant atoms in a semiconductor crystal, one of which is singly ionized. Surface electrodes control the qubit and a radio-frequency single-electron transistor provides fast readout. The calculated single gate times, of order 50 ps or less, are much shorter than the expected decoherence time. We propose universal one-and two-qubit gate operations for this system and discuss prospects for fabrication and scale up.
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LCL Hollenberg, AS Dzurak, C Wellard, AR Hamilton… - Physical Review B, 2004