Dr. Robert Cernansky Profile

Dr. Robert Cernansky

at Univ of Southampton

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Proceedings Article | 12 April 2021 Presentation

Amplitude multiplexing readout for an array of integrated SNSPDs

Alessandro Gaggero, Francesco Martini, Francesco Mattioli, Alberto Politi, Robert Cernansky, Roberto Leoni

Proceedings Volume 11721, 117210I (2021) https://doi.org/10.1117/12.2589650

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The quest to enlarge the capabilities of quantum information experiments based on non-classical states of light has directed the research toward an integrated approach. Thanks to integrated photonics circuits, photons can be efficiently generated, manipulated and detected within the same integrated chip. SNSPDs are the unique detectors that showed an integration compatibility with standard PICs. Nowadays the increasing complexity of integrated quantum optics experiments requires the manipulation of many modes and the simultaneous readout of an increasing number (N) of integrated detectors, thus posing new challenges regarding the simultaneous readout of different channels. In this presentation, we will discuss the advantages and drawbacks of our approach based on the amplitude multiplexing of N active pixels, each one consisting of a SNSPD with in parallel an on-chip AuPd resistor (Ri), to read (measure) simultaneously the output of several optical modes using only one coax cable.

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