Quantum Cameras and Sub-Diffraction Imaging with Johannes Galatsanos

Johannes Galatsanos occupies an unusual dual perch in the quantum ecosystem. As a co-author of the inaugural MIT Quantum Index Report, he's helped map the entire quantum landscape at altitude; as co-founder and CEO of Diffraqtion, he's staked his career on one of its most under-discussed corners: quantum imaging. The company spun out of Saikat Guha's lab at the University of Maryland after more than a decade of DARPA-funded research, emerged from stealth in January 2026 with $4.2M in pre-seed funding, and is now racing toward on-sky telescope demonstrations and a 2028 satellite launch. This episode is for listeners who want a technically honest look at where the "quantum" label is doing real work in a sensor versus where it's shading into sophisticated photonics and analog computing. If you care about how quantum technologies actually reach the world — through markets, contracts, and hardware that ships — this conversation gives you a specific, concrete example to think with. What You'll Learn Why a conventional camera can lose roughly 95% of the information a photon carries, and what quantum Fisher information theory says about recovering it How Diffraqtion's device processes light directly in the photonic domain before converting it to electronic information — and why that matters for shot noise The honest answer to "is this really quantum?" — including where the technology sits between quantum information theory, photonics, and analog computing Why a 6U CubeSat with a 10-centimeter aperture can plausibly compete with school-bus-sized observation satellites for specific tasks How a "diffractive neural network" runs image classification at the speed of light with negligible power consumption The difference between Diffraqtion's hard-coded Gen 1 camera and the reprogrammable Gen 2 that can swap algorithms in orbit (canopy detection over the Amazon, ship detection over the Atlantic) Why the Habitable Worlds Observatory needs a coronagraph capability — and how you can build one by processing light rather than blocking it What quantum sensing needs from policy, capital, and PR to escape the shadow of quantum computing Resources & Links Guest & Company Diffraqtion — Company homepage; describes the technology, NASA/DARPA lineage, and the "quantum eye" framing referenced in the conversation. Johannes Galatsanos on LinkedIn — Recent activity including SmallSat Europe, the NASA Space to Soil Challenge, and GQIG Summit talks on quantum imaging. Papers & Reports Quantum Index Report 2025 (arXiv) — The preprint of the MIT QIR, co-authored by Galatsanos. Essential reading for anyone trying to see the quantum landscape as a whole. MIT Sloan — New MIT Report Captures State of Quantum Computing — Background on the QIR and Galatsanos's research role at the MIT Initiative on the Digital Economy. MIT Sloan — Quantum Report Charts Growing Business Interest — Further QIR findings on the growth in corporate quantum mentions. Press & Coverage Diffraqtion Pre-Seed Announcement (PR Newswire) — Official release covering the $4.2M raise, DARPA contract, and founding team. <a href="https://breakingdefense.com/2026/01/darpa-backs-d