Details
| Original language | English |
|---|---|
| Article number | 063829 |
| Journal | Physical Review A |
| Volume | 99 |
| Issue number | 6 |
| Early online date | 20 Jun 2019 |
| Publication status | Published - Jun 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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Physical Review A, Vol. 99, No. 6, 063829, 06.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Remote Hamiltonian interactions mediated by light
AU - Karg, Thomas M.
AU - Gouraud, Baptiste
AU - Treutlein, Philipp
AU - Hammerer, Klemens
N1 - Funding information: This work was supported by the project “Modular mechanical-atomic quantum systems” (MODULAR) of the European Research Council (ERC) and by the Swiss Nanoscience Institute (SNI).
PY - 2019/6
Y1 - 2019/6
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85068259259&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1901.06891
DO - 10.48550/arXiv.1901.06891
M3 - Article
AN - SCOPUS:85068259259
VL - 99
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 6
M1 - 063829
ER -