Quantum key distribution with coherent polarization states
Stefan Lorenz, Norbert Lütkenhaus, Ulrik L. Andersen, Natalia Korolkova, Gerd Leuchs · 2004
We present an experimental quantum key distribution system with coherent light. Polarisation encoding ensures simple preparation and local oscillator free measurement. By postselection, a potential secret key can be established even in presence of losses>3dB.