Journal
PHYSICAL REVIEW LETTERS
Volume 85, Issue 26, Pages 5643-5646Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.5643
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Protocols for quantum communication between massive particles, such as atoms, are usually based on making use of nonclassical light, and/or superhigh finesse optical cavities are normally needed to enhance interaction between atoms and photons. We demonstrate a remarkable result: by using only coherent light, entanglement can be generated between distant free space atomic ensembles, and an unknown quantum state can thus be teleported from one to another. Neither nonclassical light nor cavities are needed in the scheme, which greatly simplifies its experimental implementation.
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