Finite-key analysis of high-dimensional time-energy entanglement-based quantum key distribution
نویسندگان
چکیده
We present a security analysis against collective attacks for a time-energy entanglement-based quantum key distribution protocol, given the practical constraints of single photon detector efficiency, channel loss, and finite-key considerations. We find a positive secure-key capacity when the key length increases beyond 104 for eight-dimensional systems. The minimum key length required is reduced by the ability to post-select on coincident single-photon detection events. Including finite-key effects, we show the ability to establish a shared secret key over a 200 km fiber link.
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ورودعنوان ژورنال:
- Quantum Information Processing
دوره 14 شماره
صفحات -
تاریخ انتشار 2015