Photon Queue raises $4M after delivering quantum memory hardware to Sandia

Playground Global led Photon Queue's seed after Nathan Arnold and three fellow physicists moved a 20-year lab effort into customer deployments.

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Primary source: Business Wire

Why it matters

Quantum systems need memory and interconnects as processors grow into networks. Photon Queue has early customer deployments, but the seed round must turn precision lab optics into repeatable hardware.

Illustration of Photon Queue quantum memory hardware being installed in a lab at Sandia National Laboratories.

Photon Queue announced Tuesday that it closed a $4 million seed round led by Playground Global, giving Nathan Arnold and three fellow University of Illinois quantum researchers fresh capital to manufacture a component most quantum-computing roadmaps assume will eventually exist: memory for storing and synchronizing individual photons.…

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