Programmable quantum photonic processor runs in orbit for the first time on a nanosatellite
jwt0625 · x · 2026-09-24
An arXiv paper (2609.25248) reports a programmable quantum photonic platform operating on a nanosatellite: the processor runs two photons through a six-mode universal integrated circuit, and the team observed two-photon interference after programming distinct unitaries and tuning the photons into indistinguishability. It's the first time quantum states of light have been used as a computational resource in orbit — earlier in-orbit quantum experiments only covered secure communication and fundamental tests.
Key technical details:
- The photonic chip uses old-school femtosecond laser direct writing in borosilicate glass; optics and fiber couplers are epoxied onto a carbon fiber board
- Photon indistinguishability had to survive rocket launch, strong thermal drift, and radiation
- Motivation: growing onboard satellite data, where photon interference can boost onboard ML inference at fixed hardware resources
Related event: Programmable Quantum Photonic Processor Operates in Orbit(2 posts)→
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