High-fidelity teleportation between light and atoms

Journal Article · Fri Dec 15 04:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.064301· OSTI ID:20976575

Hammerer, K ^[1]; Polzik, E S ^[2]; Cirac, J I ^[3]

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1. Institute for Theoretical Physics, University of Innsbruck, Technikerstrasse, A-6020 Innsbruck (Austria)
2. Niels Bohr Institute, QUANTOP, Danish Research Foundation Center for Quantum Optics, Blegdamsvej, DK-2100 Copenhagen (Denmark)
3. Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse, D-85748 Garching (Germany)

We show how high-fidelity quantum teleportation of light to atoms can be achieved in the same setup as was used in the recent experiment [J. Sherson et al., Nature 443, 557, 2006], where such an interspecies quantum state transfer was demonstrated for the first time. Our improved protocol takes advantage of the rich multimode entangled structure of the state of atoms and scattered light and requires simple postprocessing of homodyne detection signals and squeezed light in order to achieve fidelities up to 90% (85%) for teleportation of coherent (qubit) states under realistic experimental conditions. The remaining limitation is due to atomic decoherence and light losses.

• OSTI ID: 20976575
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
DETECTION
LIGHT SCATTERING
PHOTON-ATOM COLLISIONS
QUANTUM ENTANGLEMENT
QUANTUM TELEPORTATION
QUBITS
VISIBLE RADIATION