Remote Hamiltonian interactions mediated by light

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OriginalspracheEnglisch
Aufsatznummer063829
FachzeitschriftPhysical Review A
Jahrgang99
Ausgabenummer6
Frühes Online-Datum20 Juni 2019
PublikationsstatusVeröffentlicht - Juni 2019

Abstract

We address a fundamental question of quantum optics: Can a beam of light mediate coherent Hamiltonian interactions between two distant quantum systems? This is an intriguing question whose answer is not a priori clear, since the light carries away information about the systems and might be subject to losses, giving rise to intrinsic decoherence channels associated with the coupling. Our answer is affirmative and we derive a particularly simple sufficient condition for the interactions to be Hamiltonian: The light field needs to interact twice with the systems and the second interaction has to be the time reversal of the first. We demonstrate that, even in the presence of significant optical loss, coherent interactions can be realized and generate substantial amounts of entanglement between the systems. Our method is directly applicable for building hybrid quantum systems, with relevant applications in the fields of optomechanics and atomic ensembles.

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Remote Hamiltonian interactions mediated by light. / Karg, Thomas M.; Gouraud, Baptiste; Treutlein, Philipp et al.
in: Physical Review A, Jahrgang 99, Nr. 6, 063829, 06.2019.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Karg TM, Gouraud B, Treutlein P, Hammerer K. Remote Hamiltonian interactions mediated by light. Physical Review A. 2019 Jun;99(6):063829. Epub 2019 Jun 20. doi: 10.48550/arXiv.1901.06891, 10.1103/PhysRevA.99.063829
Karg, Thomas M. ; Gouraud, Baptiste ; Treutlein, Philipp et al. / Remote Hamiltonian interactions mediated by light. in: Physical Review A. 2019 ; Jahrgang 99, Nr. 6.
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