Photonic Bell-state analysis based on semiconductor-superconductor structures

Evyatar Sabag, Shlomi Bouscher, Raja Marjieh, Alex Hayat

Research output: Contribution to journalArticlepeer-review


We propose a compact and highly efficient scheme for complete Bell-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.

Original languageEnglish
Article number094503
JournalPhysical Review B
Issue number9
StatePublished - 7 Mar 2017

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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