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4. Nonclassical storage and retrieval of a multiphoton pulse in cold Rydberg atoms

Author

Qian-Qian Bao, Yi-Mou Liu, Xue-Dong Tian, Maurizio Artoni, G. C. La Rocca, Jin-Hui Wu, Tian, X. -D., Liu, Y. -M., Bao, Q. -Q., Wu, J. -H., Artoni, M., and La Rocca, G. C.

Subjects
Nonlinear optics, Field (physics), Atomic beams, 01 natural sciences, 010305 fluids & plasmas, Settore FIS/03 - Fisica della Materia, symbols.namesake, Atomic and Molecular Physics, 0103 physical sciences, Nonclassical light, Physics::Atomic Physics, 010306 general physics, Quantum optics Cold Rydberg atom sNon-classical lights Optical nonlinearity Quantum information applications Rydberg excitationStorage and retrievalsTemporal broadeningTwo-photon correlation Engineering, Atomic and Molecular Physics, and Optics, Atomic beams, Nonlinear optics, Quantum optics Cold Rydberg atom sNon-classical lights Optical nonlinearity Quantum information applications Rydberg excitationStorage and retrievalsTemporal broadeningTwo-photon correlation Engineering, Rydberg states, Physics, Superatom, Quantum Physics, Rydberg states, Dipole, Light intensity, Rydberg atom, Rydberg formula, symbols, Atomic physics, and Optics, Excitation
Abstract

We investigate the storage and retrieval of a multiphoton probe field in cold Rydberg atoms with an effective method based on the superatom model. This probe field is found greatly attenuated in light intensity and two-photon correlation yet suffering little temporal broadening as a result of the partial dipole blockade of Rydberg excitation. In particular, the output field energy exhibits an intriguing saturation effect against the input field energy accompanied by an inhomogeneous nonclassical antibunching feature as a manifestation of the dynamic cooperative optical nonlinearity. Our numerical results are qualitatively consistent with those in a recent experiment and could be extended to pursue quantum information applications of nonclassical light fields.

Published
2018

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