Remote Hamiltonian interactions mediated by light

Karg, Thomas M. and Gouraud, Baptiste and Treutlein, Philipp and Hammerer, Klemens. (2019) Remote Hamiltonian interactions mediated by light. Physical Review A, 99 (6). 063829.

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Official URL: https://edoc.unibas.ch/73822/

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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.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentelle Nanophysik (Treutlein)
UniBasel Contributors:Treutlein, Philipp and Karg, Thomas and Gouraud, Baptiste
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
Note:Publication type according to Uni Basel Research Database: Journal article -- Additional publication or translation in: http://arxiv.org/abs/1901.06891
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Last Modified:16 Apr 2020 07:44
Deposited On:16 Apr 2020 07:44

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