Long distance measurement-device-independent quantum key distribution with entangled photon sources
Abstract
We present a feasible method that can make quantum key distribution (QKD), both ultra-long-distance and immune, to all attacks in the detection system. This method is called measurement-device-independent QKD (MDI-QKD) with entangled photon sources in the middle. By proposing a model and simulating a QKD experiment, we find that MDI-QKD with one entangled photon source can tolerate 77 dB loss (367 km standard fiber) in the asymptotic limit and 60 dB loss (286 km standard fiber) in the finite-key case with state-of-the-art detectors. Our general model can also be applied to other non-QKD experiments involving entanglement and Bell state measurements.
- Publication:
-
Applied Physics Letters
- Pub Date:
- August 2013
- DOI:
- 10.1063/1.4817672
- arXiv:
- arXiv:1306.5814
- Bibcode:
- 2013ApPhL.103f1101X
- Keywords:
-
- photons;
- quantum entanglement;
- 42.50.Dv;
- 14.70.Bh;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Photons;
- Quantum Physics
- E-Print:
- Published version