Paper detail

Efficient Bell state analyzer for time-bin qubits with fast-recovery WSi superconducting single photon detectors

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.

preprint2014arXivOpen access
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