High-efficiency superconducting nanowire single-photon detectors fabricated from MoSi thin-films

Optics Express
V B VermaSae Woo Nam

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.

References

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Citations

Feb 26, 2016·Optics Express·Stephan KrapickChristine Silberhorn
Dec 15, 2018·Optics Letters·Alexander DivochiyPiotr Kolenderski
Jun 13, 2020·Scientific Reports·Marc de CeaRajeev J Ram
Jun 25, 2020·Nanomaterials·Tomas PolakovicValentine Novosad
Mar 4, 2020·Optics Express·Prasana RavindranJoseph C Bardin
May 4, 2016·Optics Express·Nicola A TylerMark G Thompson
Jul 2, 2018·The Review of Scientific Instruments·Clinton CahallJungsang Kim

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