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arXiv · 1410.4861

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
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Abstract

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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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. 2014-10-21. Efficient Bell state analyzer for time-bin qubits with fast-recovery WSi superconducting single photon detectors. https://doi.org/10.1364/oe.22.024497

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