Differential-phase-shift quantum key distribution with an extended degree of freedom.
Differential-phase-shift quantum key distribution (DPS-QKD) with an extended degree of freedom of measurement is proposed. Extending the degree of freedom makes it possible to strengthen the DPS-QKD scheme against intercept-and-resend attacks. The feasibility of this idea is experimentally demonstrated.
NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi 243-0198, Japan. honjo@will.brl.ntt.co.jp
Toshimori
T
Honjo
Kyo
K
Inoue