Sensing single atoms in a cavity using a broadband squeezed light
Autor: | Girish S. Agarwal, Yaping Yang, Chengjie Zhu, D. Q. Bao |
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Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
Photon
Field (physics) FOS: Physical sciences Physics::Optics 02 engineering and technology 01 natural sciences 010309 optics Optics 0103 physical sciences Atom Physics::Atomic and Molecular Clusters Spontaneous emission Physics::Atomic Physics Quantum fluctuation Physics Condensed Matter::Quantum Gases Quantum Physics business.industry Cavity quantum electrodynamics 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Atomic physics Quantum Physics (quant-ph) 0210 nano-technology business Excitation Squeezed coherent state |
Popis: | We investigate a single atom cavity-QED system directly driven by a broadband squeezed light. We demonstrate how the squeezed radiation can be used to sense the presence of a single atom in a cavity. This happens by transferring one of the photons from the field in a state with an even number of photons to the atom and thereby populating an odd number of Fock states. Specifically, the presence of the atom is sensed by remarkable changing in the presence of one photon and the loss of squeezing of the cavity field. A complete study of quantum fluctuations and the excitation of multiphoton transitions is given. |
Databáze: | OpenAIRE |
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