Few qubit atom-light interfaces with collective encoding

Details Few qubit atom-light interfaces with collective encoding Few qubit atom-light interfaces with collective encoding

2008-07-23

arxiv.org/abs/0807.3610v2

Phys. Rev. A 79, 012320 (2009)

Physics

Quantum Physics

4 pages, 2 figures; atomic decay rate corrected in text and in Fig. 1

Scientific paper

Samples with few hundred atoms within a few micrometer sized region of space are large enough to provide efficient cooperative absorption and emission of light, and small enough to ensure strong dipole-dipole interactions when atoms are excited into high-lying Rydberg states. Based on a recently proposed collective encoding scheme, we propose to build few-qubit quantum registers in such samples. The registers can store and transmit quantum information in the form of single photons, and they can employ entanglement pumping protocols to perform ideally in networks for scalable quantum computing and long distance quantum communication.

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