One-shot entanglement generation over long distances in noisy quantum networks
arXiv:0807.0208 · doi:10.1103/PhysRevA.78.062324
Abstract
We consider the problem of creating a long-distance entangled state between two stations of a network, where neighboring nodes are connected by noisy quantum channels. We show that any two stations can share an entangled pair if the effective probability for the quantum errors is below a certain threshold, which is achieved by using local redundant encoding to preserve the global phase and network-based correction for the bit-flip errors. In contrast to the convensional quantum repeater schemes we are not limited by the memory coherence time, because all quantum operations only use one-way classical communication and can be done in one shot. Meanwhile, the overhead of local resources only increases logarithmically with the size of the network, making our proposal favorable to practical applications of long-distance quantum communication.
revtex4, 6 pages, 5 figures (.eps)
References in corpus (14)
- Quantum Cryptography
- Purification of Noisy Entanglement and Faithful Teleportation via Noisy Channels
- Topological quantum memory
- Quantum Computing with Very Noisy Devices
- A Theory of Fault-Tolerant Quantum Computation
- Quantum repeaters based on entanglement purification
- Creation of entangled states of distant atoms by interference
- Entanglement Measures under Symmetry
- Distributed Quantum Computation Based-on Small Quantum Registers
- Fault-tolerant quantum repeaters with minimal physical resources, and implementations based on single photon emitters
- Entanglement Percolation in Quantum Networks
- Nishimori point in the 2D +/- J random-bond Ising model
- Entanglement Distribution in Pure-State Quantum Networks
- On the role of memory errors in quantum repeaters
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