Theory of the effect of geomagnetic field on plug-and-play schemes for fiber-based quantum key distribution systems.
We quantify the instantaneous polarization rotation of the optical field by the Faraday birefringence in a long spun-fiber link terminated by a Faraday mirror. Obtained analytical results agrees well with computer simulations and are consistent with previous experimental findings.
Mecozzi
Antonio
A
Consorzio Nazionale Interuniversitario per Scienze fisiche della Materia (CNISM)-Dipartimento di Ingegneria Elettrica e dell'Informazione, Università dell'Aquila, Poggio di Roio, L'Aquila 67040, Italy. amecozzi@ing.univaq.it
Antonelli
Cristian
C
Brodsky
Misha
M