Deploying quantum light sources on nanosatellites II: lessons and perspectives on CubeSat spacecraft
Robert Bedington, Edward Truong-Cao, Tan Yue Chuan, Cliff Cheng, Kadir, Durak, James Anthony Grieve, Jesper Larsen, Daniel Oi, Alexander Ling
TL;DR
This paper discusses the development and deployment of a miniaturized, ruggedized quantum light source for space-based quantum key distribution, focusing on CubeSat applications and lessons learned.
Contribution
It presents the design, integration, and deployment considerations of a compact entangled photon source tailored for CubeSat missions.
Findings
Successful miniaturization of quantum source within CubeSat constraints
Demonstrated ruggedness suitable for space deployment
Discussed future prospects and challenges for space-based quantum communication
Abstract
To enable space-based quantum key distribution proposals the Centre for Quantum Technologies is developing a source of entangled photons ruggedized to survive deployment in space and greatly miniaturised so that it conforms to the strict form factor and power requirements of a 1U CubeSat. The Small Photon Entangling Quantum System is an integrated instrument where the pump, photon pair source and detectors are combined within a single optical tray and electronics package that is no larger than 10 cm x 10 cm x 3 cm. This footprint enables the instrument to be placed onboard nanosatellites or the CubeLab structure aboard the International Space Station. We will discuss the challenges and future prospects of CubeSat-based missions.
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