Cryogenic optical interfacing for scalable quantum computing: analysis of VCSEL operation and thermal profiles as an optical Link

Behzad Namvar; Jukka Viheriälä; Topi Uusitalo; Heikki Virtanen; Patrik Rajala; Sanna Ranta; Teemu Hakkarainen; Antti Tukiainen; Guilhem Almuneau; Mircea Guina

doi:10.1117/12.3001360

12 March 2024 Cryogenic optical interfacing for scalable quantum computing: analysis of VCSEL operation and thermal profiles as an optical Link

Behzad Namvar, Jukka Viheriälä, Topi Uusitalo, Heikki Virtanen, Patrik Rajala, Sanna Ranta, Teemu Hakkarainen, Antti Tukiainen, Guilhem Almuneau, Mircea Guina

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Proceedings Volume PC12880, Physics and Simulation of Optoelectronic Devices XXXII; PC1288006 (2024) https://doi.org/10.1117/12.3001360
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Scaling quantum computing while maintaining quantum coherence at cryogenic temperatures is still a challenging issue. It emphasizes the need for an optical link between the control processor in the cryogenic environments and memory units kept in room temperature to mitigate thermal noise-induced decoherence. This study examines the utilization of VCSELs as an optical link in cryogenic environments. The study explores microcavity-gain resonance conditions and their temperature dependency, develops electrical models considering limited thermionic emission, and analyzes internal thermal profiles during low-temperature operation. The research includes characterizing fabricated devices and addressing key factors, such as p-doped DBR, that limit energy-efficient performance.

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Behzad Namvar, Jukka Viheriälä, Topi Uusitalo, Heikki Virtanen, Patrik Rajala, Sanna Ranta, Teemu Hakkarainen, Antti Tukiainen, Guilhem Almuneau, and Mircea Guina "Cryogenic optical interfacing for scalable quantum computing: analysis of VCSEL operation and thermal profiles as an optical Link", Proc. SPIE PC12880, Physics and Simulation of Optoelectronic Devices XXXII, PC1288006 (12 March 2024); https://doi.org/10.1117/12.3001360

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KEYWORDS

Cryogenics

Thermography

Vertical cavity surface emitting lasers

Quantum computing

Quantum operations

Process control

Quantum communications

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