Self-referenced continuous-variable quantum key distribution

Technology Area
Networking and Communication

Various technologies for continuous-variable quantum key distribution without transmitting a transmitter’s local oscillator are described herein. A receiver on an optical transmission channel uses an oscillator signal generated by a light source at the receiver’s location to perform interferometric detection on received signals. An optical reference pulse is sent by the transmitter on the transmission channel and the receiver computes a phase offset of the transmission based on quadrature measurements of the reference pulse. The receiver can then compensate for the phase offset between the transmitter’s reference and the receiver’s reference when measuring quadratures of received data pulses.

Patent or Application Number
Issuance / Grant Date
Lead Licensing Institution
Sandia National Laboratories
IP was generated with QSA funds
Point of Contact
David Wick
Entity Account Email Address