Cryogenic optical beam steering for characterization of quantum sensors

Kelly Stifter

doi:10.1117/12.2658013

9 March 2023 Cryogenic optical beam steering for characterization of quantum sensors

Kelly Stifter

Proceedings Volume PC12447, Quantum Sensing, Imaging, and Precision Metrology; PC124472N (2023) https://doi.org/10.1117/12.2658013
Event: SPIE Quantum West, 2023, San Francisco, California, United States

Abstract

Currently, there is a critical need for localized, position-dependent calibration of quantum device response to characterize the fundamental sensing mechanism of many superconducting detectors. For example, qubit decoherence has been found to be associated with the generation of electron-hole pairs and phonons through the scattering of radiation in the qubit substrate. Novel particle physics applications seek to use these events as indicators of energy deposition, allowing quantum devices to serve as particle detectors. The low energy threshold of these proposed detectors makes them particularly well-suited for a next-generation dark matter search. We have developed a cryogenic optical beam steering system that delivers monochromatic photons in the range of 250nm - 20um across the surface of any cryogenic quantum device. In this talk, I will present the design overview and specifications of this calibration unit, along with current status and plans of the testing program.

Conference Presentation

Citation Download Citation

Kelly Stifter "Cryogenic optical beam steering for characterization of quantum sensors", Proc. SPIE PC12447, Quantum Sensing, Imaging, and Precision Metrology, PC124472N (9 March 2023); https://doi.org/10.1117/12.2658013

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