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This research demonstrates a practical on-chip method for photon subtraction using solid-state emitters and chiral waveguides, which could significantly enhance the efficiency of quantum communication and sensing systems. By enabling the generation of specific quantum states from simple laser inputs, this module offers a scalable path toward integrating advanced quantum capabilities into existing infrastructure without requiring complex multi-laser setups.
A chip-based module subtracts photons for quantum communication and sensing

IQC researchers demonstrated a photon subtraction approach using a solid-state quantum emitter integrated on a chip, potentially improving quantum communications.
Researchers for the Institute for Quantum Computing (IQC) at the University of Waterloo have demonstrated the experimental feasibility of subtracting photons from light pulses using a solid-state quantum emitter and a chiral optical waveguide, a unique structure where a photon’s spin dictates its travel direction. This on-chip…
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