Imperturbable Interferometer for Quantum Cryptography
Antoine Müller, J.-D. Gautier, Nicolas Gisin, B. Hüttner, Wolfgang Tittel, Hugo Zbinden · Quantum Electronics and Laser Science Conference · 1997
An interferometer using Faraday mirrors is presented. It is self-balanced and shows extraordinarily good stability. A quantum cryptographic key has been created using the BB92 protocol1 with a total error rate as low as 0.5 +/- 0.1 %.