Configuration-dependent reflection induced by dissipated localized modes

We study the one-photon scattering problem for a super-cavity (SC) coupling with two two-level atoms. With atomic decay, photon reflection shows a sudden drop at only for the two atoms in the node-antinode configuration. The underlying mechanism is attributed to the fact that the scatterer has a con...

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Bibliographic Details
Published in:Europhysics letters 2017-02, Vol.117 (4), p.44003-44003
Main Authors: Zhu, Wei, Zhang, Peng, Zhou, D. L.
Format: Article
Language:English
Subjects:
03.65.Yz
32.80.Qk
42.50.Pq
Antinodes
Configurations
Coupling
Decay
Deltas
Dissipation
Photon scatter
Photons
Quantum optics
Reflection
Reservoirs
X rays
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Summary:We study the one-photon scattering problem for a super-cavity (SC) coupling with two two-level atoms. With atomic decay, photon reflection shows a sudden drop at only for the two atoms in the node-antinode configuration. The underlying mechanism is attributed to the fact that the scatterer has a configuration-dependent localized dissipated eigen-mode at . In the node-antinode configuration, the eigen-mode localized at the input side, through which the photon can enter into the SC, then excites the atom at the node and finally leaks into the reservoir due to atomic decay. In this way, a sudden drop emerges at in photon reflection. In the antinode-node case, however, the eigen-mode is localized at the output side, so the photon is completely reflected at . A similar phenomenon has been observed in a recent experiment of X-ray quantum optics (Röhlsberger R. et al., Nature, 482 (2012) 199) but with a complicated explanation due to electromagnetically induced transparency.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/117/44003