Dynamical entanglement purification using chains of atoms and optical cavities
Journal Article
·
· Physical Review. A
- Optical Quantum Information Theory Group, Max Planck Institute for the Science of Light, Guenther-Scharowsky-Strasse 1, Building 26, D-91058 Erlangen (Germany)
In the framework of cavity QED, we propose a practical scheme to purify dynamically a bipartite entangled state using short chains of atoms coupled to high-finesse optical cavities. In contrast to conventional entanglement purification protocols, we avoid controlled-not gates, thus reducing complicated pulse sequences and superfluous qubit operations. Our interaction scheme works in a deterministic way and, together with entanglement distribution and swapping, opens a route toward efficient quantum repeaters for long-distance quantum communication.
- OSTI ID:
- 22080343
- Journal Information:
- Physical Review. A, Vol. 84, Issue 4; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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