Quantum communication between atomic ensembles using coherent light

Abstract

Protocols for quantum communication between massive particles, such as atoms, are usually based on transmitting nonclassical light, and/or super-high finesse optical cavities are normally needed to enhance interaction between atoms and photons. We demonstrate a surprising result: an unknown quantum state can be teleported from one free-space atomic ensemble to the other by transmitting only coherent light. No non-classical light and no cavities are needed in the scheme, which greatly simplifies its experimental implementation.

5 pages, 2 figures

References in corpus (4)

• Experimental quantum teleportation
• Inseparability criterion for continuous variable systems
• Proposal for teleportation of an atomic state via cavity decay
• Quantum state transfer between motion and light

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