量子電腦 - 中研院物理研究所
量子電腦 - 中研院物理研究所
量子電腦 - 中研院物理研究所
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矽 半 導 體 的 自 旋 量 子 電 腦<br />
Silicon-based spin quantum computer<br />
• Exploiting the existing<br />
strength of Si technology<br />
• Regular array of P donors<br />
in pure silicon<br />
• Low temperature:<br />
– Effective Hamiltonian<br />
involves only spins<br />
– Long spin coherence<br />
and relaxation times<br />
• Magnetic field B to<br />
polarized electron spins<br />
• Control with surface gates<br />
and NMR pulses<br />
• Donor separation ~ 20nm<br />
• Gate width < 10nm
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