Polarization agnostic continuous variable quantum key distribution
arXiv:2502.12968 · doi:10.1103/PhysRevA.111.L030601
Abstract
We introduce a polarization agnostic method for Gaussian-modulated coherent state (GCMS) continuous-variable quantum key distribution (CVQKD). Due to the random and continuous nature of the GCMS protocol, Alice, the transmitter, can encode two distinct quadratures in each of two orthogonal polarization modes, such that Bob, the receiver, measures valid GCMS quadratures in a single polarization mode even when polarization changes occur during transmission. This method does not require polarization correction in the optical domain, does not require monitoring both polarization modes, reduces loss by eliminating optical components, and avoids the noise injected by polarization correction algorithms.
References in corpus (17)
- Quantum key distribution using gaussian-modulated coherent states
- Quantum key distribution over 25 km with an all-fiber continuous-variable system
- Finite-size analysis of continuous-variable quantum key distribution
- Long-Distance Continuous-Variable Quantum Key Distribution over 202.81 km of Fiber
- Continuous-Variable Quantum Key Distribution with Gaussian Modulation -- The Theory of Practical Implementations
- Distributing Secret Keys with Quantum Continuous Variables: Principle, Security and Implementations
- Improvement of continuous-variable quantum key distribution systems by using optical preamplifiers
- Generating the local oscillator "locally" in continuous-variable quantum key distribution based on coherent detection
- High-speed Gaussian modulated continuous-variable quantum key distribution with a local local oscillator based on pilot-tone-assisted phase compensation
- Continuous-Variable Quantum Key Distribution at 10 GBaud using an Integrated Photonic-Electronic Receiver
- Noise analysis of simultaneous quantum key distribution and classical communication scheme using a true local oscillator
- Passive state preparation in the Gaussian-modulated coherent states quantum key distribution
- Experimental passive state preparation for continuous variable quantum communications
- Experimental Demonstration of Discrete Modulation Formats for Continuous Variable Quantum Key Distribution
- Experimental demonstration of Continuous-Variable Quantum Key Distribution with a silicon photonics integrated receiver
- Polarization diverse true heterodyne receiver for continuous variable quantum key distribution
- Continuous-variable quantum key distribution field-test with true local oscillator