The Ohio State University

Duke University

Gregory P Lafyatis

Kyle DeBry

Jungsang Kim

Daniel J Gauthier

Kathryn L Nicolich

Nurul T Islam

Clinton Cahall

An example method for connectorizing a superconducting cable is described herein. The method can include depositing an oxide layer on a surface of a superconducting cable using a first electrolytic cell, electroplating a metal layer on the surface of the oxide layer of the superconducting cable using a second electrolytic cell, and soldering a connector to the metal layer coated on the surface of the superconducting cable. The oxide layer allows the metal layer to adhere to the surface of the superconducting cable.

Electroplating process for connectorizing superconducting cables

An example method for connectorizing a superconducting cable is described herein. The method can include depositing an oxide layer on a surface of a superconducting cable, electroplating a metal layer on the surface of the superconducting cable, and soldering a connector to the metal layer coated on the surface of the superconducting cable. The oxide layer allows the metal layer to adhere to the surface of the superconducting cable.

An apparatus, method and system for resolving an n-number of photons from an optical source multiphoton event, the apparatus includes a cryostat includes a single-pixel superconducting nanowire single-photon detector (SNSPD) configured to receive an optical signal and therefrom produce a corresponding electrical signal, and a current bias source configured to supply a bias current to the SNSPD. The apparatus further includes a low-noise amplifier configured to produce a low-noise amplified electrical signal from the electrical signal, a signal processing circuit configured to receive the low-noise amplified electrical signal having a waveform rising edge of an n-number photon event to produce either a time-differentiated electrical signal by processing the waveform rising edge with a differentiating circuit to generate a differentiated peak corresponding to the n-number photon event, or a time-to-amplitude electrical signal by processing the waveform rising edge with a precision timing circuit to generate a rise time measurement corresponding to the n-number photon event. The apparatus further includes an amplitude discriminating device configured to determine an integer n-number photon event based on measuring a value of the n-number photon event.

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Grandview, OH, United States of America

Gregory P Lafyatis