title: Eight-fold signal amplification of a superconducting nanowire single-photon detector using a multiple-avalanche architecture.
abstract: Superconducting nanowire avalanche single-photon detectors (SNAPs) with n parallel nanowires are advantageous over single-nanowire detectors because their output signal amplitude scales linearly with n. However, the SNAP architecture has not been viably demonstrated for n > 4. To increase n for larger signal amplification, we designed a multi-stage, successive-avalanche architecture which used nanowires, connected via choke inductors in a binary-tree layout. We demonstrated an avalanche detector with n = 8 parallel nanowires and achieved eight-fold signal amplification, with a timing jitter of 54 ps.
authors.forename: Qingyuan
authors.initials: Q
authors.lastname: Zhao
authors.forename: Adam N
authors.initials: AN
authors.lastname: McCaughan
authors.forename: Andrew E
authors.initials: AE
authors.lastname: Dane
authors.forename: Faraz
authors.initials: F
authors.lastname: Najafi
authors.forename: Francesco
authors.initials: F
authors.lastname: Bellei
authors.forename: Domenico
authors.initials: D
authors.lastname: De Fazio
authors.forename: Kristen A
authors.initials: KA
authors.lastname: Sunter
authors.forename: Yachin
authors.initials: Y
authors.lastname: Ivry
authors.forename: Karl K
authors.initials: KK
authors.lastname: Berggren