2006/08/31 by Klemens Hammerer, K. Hammerer, E. S. Polzik +1
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Fidelity #Physics #Quantum #Quantum Information and Cryptography #Quantum channel #Quantum decoherence #Quantum entanglement #Quantum mechanics #Quantum optics and atomic interactions #Quantum teleportation #Qubit #Superdense coding #Telecommunications #Teleportation #quant-ph
paper · pdf · doi:10.1103/physreva.74.064301
published as PRA 74, 064301 (2007) · 5 pages, 3 figures
openalex publication_date 2006/12/01 · arxiv created 2006/12/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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., Nature443, 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.