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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BB84: 4 Polarizations<br />
0 o ,90 o 0 o ,45 o 0 o ,45 o D1<br />
Laser PC1<br />
PC2<br />
PC3 PBS D0<br />
• Alice<br />
A1 = 0 1 1 0 0 1 0 0 0 0 1 1<br />
A2 = ⊗ ⊕ ⊗ ⊕ ⊗ ⊕ ⊗ ⊕ ⊗ ⊕ ⊗ ⊕<br />
P = <br />
• Bob<br />
B =<br />
D = 0 1 0 0 0 1 0 0 0 0 1 1<br />
1 1 1 1 1 1<br />
⊕ ⊕ ⊕ ⊗ ⊕ ⊕ ⊗ ⊗ ⊕ ⊕ ⊗ ⊕<br />
Distill secret key from raw key: Information reconciliation and privacy amplification
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