title: High-efficiency superconducting nanowire single-photon detectors fabricated from MoSi thin-films.
abstract: We report on MoSi SNSPDs which achieved high system detection efficiency (87.1 ± 0.5% at 1542 nm) at 0.7 K and we demonstrate that these detectors can also be operated with saturated internal efficiency at a temperature of 2.3 K in a Gifford-McMahon cryocooler. We measured a minimum system jitter of 76 ps, maximum count rate approaching 10 MHz, and polarization dependence as low as 3.3 ± 0.1%. The performance of MoSi SNSPDs at 2.3 K is similar to the performance of WSi SNSPDs at < 1 K. The higher operating temperature of MoSi SNSPDs makes these devices promising for widespread use due to the simpler and less expensive cryogenics required for their operation.
authors.forename: V B
authors.initials: VB
authors.lastname: Verma
authors.forename: B
authors.initials: B
authors.lastname: Korzh
authors.forename: F
authors.initials: F
authors.lastname: Bussières
authors.forename: R D
authors.initials: RD
authors.lastname: Horansky
authors.forename: S D
authors.initials: SD
authors.lastname: Dyer
authors.forename: A E
authors.initials: AE
authors.lastname: Lita
authors.forename: I
authors.initials: I
authors.lastname: Vayshenker
authors.forename: F
authors.initials: F
authors.lastname: Marsili
authors.forename: M D
authors.initials: MD
authors.lastname: Shaw
authors.forename: H
authors.initials: H
authors.lastname: Zbinden
authors.forename: R P
authors.initials: RP
authors.lastname: Mirin
authors.forename: S W
authors.initials: SW
authors.lastname: Nam