Experimental Fault-Tolerant Quantum Cryptography in a Decoherence-Free Subspace
arXiv:quant-ph/0508069 · doi:10.1103/PhysRevA.73.020301
Abstract
we experimentally implement a fault-tolerant quantum key distribution protocol with two photons in a decoherence-free subspace (DFS). It is demonstrated that our protocol can yield good key rate even with large bit-flip error rate caused by collective rotation, while the usual realization of BB84 protocol cannot produce any secure final key given the same channel. Since the experiment is performed in polarization space and does not need the calibration of reference frame, important applications in free-space quantum communication are expected. Moreover, our method can also be used to robustly transmit an arbitrary two-level quantum state in a type of DFS.
5 pages, 3 figures, Add new references
References in corpus (12)
- Quantum Cryptography
- Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
- Quantum Cryptography with Entangled Photons
- Quantum Computers and Dissipation
- Theory of Decoherence-Free Fault-Tolerant Universal Quantum Computation
- Experimental Free-Space Distribution of Entangled Photon Pairs over a Noisy Ground Atmosphere of 13km
- Robust polarization-based quantum key distribution over collective-noise channel
- Decoherence-Free Subspaces in Quantum Key Distribution
- Classical and quantum communication without a shared reference frame
- Robust Quantum Communication Using A Polarization-Entangled Photon Pair
- Fault tolerant quantum key distribution protocol with collective random unitary noise
- On the communication complexity of establishing a shared reference frame
Cited by in corpus (13)
- Photonic quantum information processing: a review
- Quantum Decoherence
- Quantum communication without alignment using multiple-qubit single-photon states
- Driving Quantum System into Decoherence-free Subspaces by Lyapunov Control
- Lyapunov Control on Quantum Open System in Decoherence-free Subspaces
- Decoherence-free linear quantum subsystems
- Fiber-optic realization of anisotropic depolarizing quantum channels
- Coherent control in a decoherence-free subspace of a collective multi-level system
- Experimental Demonstration of Robust Bidirectional Quantum Optical Communications
- Experimental ancilla-assisted qubit transmission against correlated noise using quantum parity checking
- Quantum key distribution based on orthogonal state encoding
- State independent QKD
- Decoherence: From Interpretation to Experiment