Photonic Bell-state analysis based on semiconductor-superconductor structures

被引：11
|
作者：
Sabag, Evyatar [1 ]
Bouscher, Shlomi [1 ]
Marjieh, Raja [1 ]
Hayat, Alex [1 ]
机构：
[1] Technion, Dept Elect Engn, IL-32000 Haifa, Israel
来源：
PHYSICAL REVIEW B | 2017年 / 95卷 / 09期
关键词：
QUANTUM TELEPORTATION; WELLS; TRANSITION; NIOBIUM; FILMS;
D O I：
10.1103/PhysRevB.95.094503
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We propose a compact and highly efficient scheme for completeBell-state analysis using two-photon absorption in a superconducting proximity region of a semiconductor avalanche photodiode. One-photon transitions to the superconducting Cooper-pair based condensate in the conduction band are forbidden, whereas two-photon transitions are allowed and are strongly enhanced by superconductivity. This Cooper-pair based two-photon absorption results in a strong detection preference of a specified entangled state. Our analysis shows high detection purity of the desired Bell state with negligible false detection probability. The theoretically demonstrated concept can pave the way towards practical realizations of advanced quantum information schemes.
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页数：7
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