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  Strongly correlated photon transport in waveguide QED with weakly coupled emitters

Mahmoodian, S., Čepulkovskis, M., Das, S., Lodahl, P., Hammerer, K., & Sørensen, A. S. (2018). Strongly correlated photon transport in waveguide QED with weakly coupled emitters. Physical Review Letters, 121: 143601. doi:10.1103/PhysRevLett.121.143601.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-66CF-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-F6C0-F
Genre: Journal Article

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 Creators:
Mahmoodian, Sahand1, Author
Čepulkovskis, Mantas, Author
Das, Sumanta, Author
Lodahl, Peter, Author
Hammerer, Klemens1, Author              
Sørensen, Anders S., Author
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Quantum Physics, quant-ph, Physics, Optics, physics.optics
 Abstract: We show that strongly correlated photon transport can be observed in waveguides containing optically dense ensembles of emitters. Remarkably, this occurs even for weak coupling efficiencies. Specifically, we compute the photon transport properties through a chirally coupled system of $N$ two-level systems driven by a weak coherent field, where each emitter can also scatter photons out of the waveguide. The photon correlations arise due to an interplay of nonlinearity and coupling to a loss reservoir, which creates a strong effective interaction between transmitted photons. The highly correlated photon states are less susceptible to losses than uncorrelated photons and have a power-law decay with $N$. This is described using a simple universal asymptotic solution governed by a single scaling parameter which describes photon bunching and power transmission. We show numerically that, for randomly placed emitters, these results hold even in systems without chirality. The effect can be observed in existing tapered fiber setups with trapped atoms.

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 Dates: 2018-03-062018-09-172018
 Publication Status: Published in print
 Pages: 6 pages + 10 page supplement
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1803.02428
DOI: 10.1103/PhysRevLett.121.143601
URI: http://arxiv.org/abs/1803.02428
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 121 Sequence Number: 143601 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1