The Qube research satellite to test quantum key distribution launched Aug. 16 on a SpaceX Falcon 9 rideshare. Credit: Zentrum Fur Telematik Credit: Center for Telematics, Wurzburg SAN FRANCISCO – Qube ...

The experimental layout of the sender Alice and the receiver Bob. Alice’s setup contains the excitation and collection setup of the single photon source, and a Sagnac-like polarization modulator for ...

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Physicists have developed a spectral-filtering technique that strips away unwanted extra photons from quantum light sources, tackling one of the most persistent obstacles in quantum optics. The method ...

In the race to secure digital infrastructure against the looming threat of quantum computing, space has emerged as an indispensable theater. Satellites, once primarily vehicles for reconnaissance and ...