Decoy states for quantum key distribution based on decoherence-free subspaces
arXiv:0803.1594 · doi:10.1103/PhysRevA.77.062326
Abstract
Quantum key distribution with decoherence-free subspaces has been proposed to overcome the collective noise to the polarization modes of photons flying in quantum channel. Prototype of this scheme have also been achieved with parametric-down conversion source. However, a novel type of photon-number-splitting attack we proposed in this paper will make the practical implementations of this scheme insecure since the parametric-down conversion source may emit multi-photon pairs occasionally. We propose decoy states method to make these implementations immune to this attack. And with this decoy states method, both the security distance and key bit rate will be increased.
6 pages,1 figure
References in corpus (26)
- Quantum Cryptography
- Decoy State Quantum Key Distribution
- Quantum Key Distribution with High Loss: Toward Global Secure Communication
- Beating the PNS attack in practical quantum cryptography
- Security Aspects of Practical Quantum Cryptography
- Practical Decoy State for Quantum Key Distribution
- Security against individual attacks for realistic quantum key distribution
- Quantum Cryptography with Coherent States
- Quantum key distribution over 122 km of standard telecom fiber
- Quantum Key Distribution over 67 km with a plug & play system
- Experimental Long-Distance Decoy-State Quantum Key Distribution Based On Polarization Encoding
- Experimental Quantum Key Distribution with Decoy States
- Long distance decoy state quantum key distribution in optical fiber
- Quantum key distribution with entangled photon sources
- A decoy-state protocol for quantum cryptography with 4 intensities of coherent states
- Decoherence-Free Subspaces in Quantum Key Distribution
- Intrinsic-Stabilization Uni-Directional Quantum Key Distribution Between Beijing and Tianjin
- Practical decoy state method in quantum key distribution with heralded single photon source
- Improved practical decoy state method in quantum key distribution with parametric down conversion source
- Robust Quantum Communication Using A Polarization-Entangled Photon Pair
- Secure and efficient decoy-state quantum key distribution with inexact pulse intensities
- Experimental Quantum Communication without a Shared Reference Frame
- Simple protocol for secure decoy-state quantum key distribution with a loosely controlled source
- Decoy State Quantum Key Distribution With Modified Coherent State
- Photon-number-solving Decoy State Quantum Key Distribution
- Nonorthogonal decoy-state Quantum Key Distribution