发明名称 |
Entanglement-based QKD system with active phase tracking |
摘要 |
Entanglement-based QKD systems and methods with active phase tracking and stabilization are disclosed wherein pairs of coherent photons at a first wavelength are generated. Second harmonic generation and spontaneous parametric downconversion are used to generate from the pairs of coherent photons entangled pairs of photons having the first wavelength. Relative phase delays of the entangled photons are tracked using reference optical signals. Classical detectors detect the reference signals while single-photon detectors and a control unit generate a phase-correction signal that maintains the relative phases of phase-delay loops via adjustable phase-delay elements. |
申请公布号 |
US8073336(B2) |
申请公布日期 |
2011.12.06 |
申请号 |
US20070223308 |
申请日期 |
2007.01.31 |
申请人 |
TRIFONOV ALEXEI;MAGIQ TECHNOLOGIES, INC. |
发明人 |
TRIFONOV ALEXEI |
分类号 |
H04L9/00;H04K3/00 |
主分类号 |
H04L9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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