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Efficient all-optical switch using a {Lambda} atom in a cavity QED system

Nielsen, Anne E. B.·Kerckhoff, Joseph
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Abstract

We propose an all-optical switch constructed from a two-mode optical resonator containing a strongly coupled, three-state system. The coupling allows a weak, continuous wave laser drive to incoherently control the transmission of a much stronger, continuous wave signal laser into (and through) the resonator. We demonstrate that in this simple setup the presence of a control drive with 1/10th the power of the signal drive can induce near complete reflection of the signal, while its absence allows for near complete transmission. The switch can also be operated as a set-reset relay with two control inputs that efficiently drive the switch into either the reflecting or the transmitting state.

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS74 ATOMIC AND MOLECULAR PHYSICSATOMSCAVITY RESONATORSCOUPLINGENERGY LEVELSOPTICAL MODESQUANTUM ELECTRODYNAMICSREFLECTIONSWITCHES

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Nielsen, Anne E. B., Kerckhoff, Joseph. 2011-10-15. Efficient all-optical switch using a {Lambda} atom in a cavity QED system. https://doi.org/10.1103/physreva.84.043821

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