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Near-deterministic generation of N-photon states via active time-frequency multiplexing

Alex Fischer, Nathan T. Arnold, Colin P. Lualdi, Kelsey Ortiz, Michael R. Gehl, Paul S. Davids, Kai Shinbrough, Nils T. Otterstrom

Published Jan 1, 2026• 0 citations
Publisher

Abstract

We propose a multiplexing scheme for generating multiphoton resource states for frequency-encoded photonic quantum computation using an optical quantum memory. We calculate feasible multiphoton state generation rates, and report progress toward experimental implementation.
DOI
10.1364/cleo_at.2026.jtu.183

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We demonstrate multiphoton interference using a resource-efficient frequency multiplexing scheme, suitable for quantum information applications that demand multiple indistinguishable and pure single photons. In our source, frequency-correlated photon pairs are generated over a wide range of frequencies by pulsed parametric down conversion. Indistinguishable single photons of a predetermined frequency are prepared using frequency-resolved detection of one photon to control an electro-optic frequency shift applied to its partner. Measured photon statistics show multiplexing increases the probability of delivering a single photon, without a corresponding increase to multiphoton events. Interference of consecutive outputs is used to bound the modal purity and demonstrate the nonclassical nature of the emitted light.
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