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Paper 1
Efficient Bell state analyzer for time-bin qubits with fast-recovery WSi superconducting single photon detectors
Raju Valivarthi, Itzel Lucio-Martinez, Allison Rubenok, Philip Chan, Francesco Marsili, Varun B. Verma, Matthew D. Shaw, J. A. Stern, Joshua A. Slater, Daniel Oblak, Sae Woo Nam, Wolfgang Tittel
- Year
- 2014
- Journal
- arXiv preprint
- DOI
- arXiv:1410.4861
- arXiv
- 1410.4861
We experimentally demonstrate a high-efficiency Bell state measurement for time-bin qubits that employs two superconducting nanowire single-photon detectors with short dead-times, allowing projections onto two Bell states, |Psi>- and |Psi+>. Compared to previous implementations for time-bin qubits, this yields an increase in the efficiency of Bell state analysis by a factor of thirty.
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