title: Efficient Bell state analyzer for time-bin qubits with fast-recovery WSi superconducting single photon detectors.
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, |ψ⁻〉 and |ψ⁺〉. Compared to previous implementations for time-bin qubits, this yields an increase in the efficiency of Bell state analysis by a factor of thirty.
authors.forename: R
authors.initials: R
authors.lastname: Valivarthi
authors.forename: I
authors.initials: I
authors.lastname: Lucio-Martinez
authors.forename: A
authors.initials: A
authors.lastname: Rubenok
authors.forename: P
authors.initials: P
authors.lastname: Chan
authors.forename: F
authors.initials: F
authors.lastname: Marsili
authors.forename: V B
authors.initials: VB
authors.lastname: Verma
authors.forename: M D
authors.initials: MD
authors.lastname: Shaw
authors.forename: J A
authors.initials: JA
authors.lastname: Stern
authors.forename: J A
authors.initials: JA
authors.lastname: Slater
authors.forename: D
authors.initials: D
authors.lastname: Oblak
authors.forename: S W
authors.initials: SW
authors.lastname: Nam
authors.forename: W
authors.initials: W
authors.lastname: Tittel