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  Open-system many-body dynamics through interferometric measurements and feedback

Lammers, J., Weimer, H., & Hammerer, K. (2016). Open-system many-body dynamics through interferometric measurements and feedback. Physical Review A, 94: 052120. doi:10.1103/PhysRevA.94.052120.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-3E23-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-F662-A
Genre: Journal Article

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 Creators:
Lammers, Jonas1, Author
Weimer, Hendrik, Author
Hammerer, Klemens1, 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
 Abstract: Light-matter interfaces enable the generation of entangled states of light and matter which can be exploited to steer the quantum state of matter through measurement of light and feedback. Here we consider continuous-time, interferometric homodyne measurements of light on an array of light-matter interfaces followed by local feedback acting on each material system individually. While the systems are physically non-interacting, the feedback master equation we derive describes driven-dissipative, interacting many-body quantum dynamics, and comprises pairwise Hamiltonian interactions and collective jump operators. We characterize the general class of driven-dissipative many body systems which can be engineered in this way, and derive necessary conditions on models supporting non-trivial quantum dynamics beyond what can be generated by local operations and classical communication. We provide specific examples of models which allow for the creation of stationary many-particle entanglement, and the emulation of dissipative Ising models. Since the interaction between the systems is mediated via feedback only, there is no intrinsic limit on the range or geometry of the interaction, making the scheme quite versatile.

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 Dates: 2016-06-142016-11-102016
 Publication Status: Published in print
 Pages: 18 pages, 10 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1606.04475
DOI: 10.1103/PhysRevA.94.052120
URI: http://arxiv.org/abs/1606.04475
 Degree: -

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Title: Physical Review A
  Other : Phys. Rev. A
  Other : Physical Review A: Atomic, Molecular, and Optical Physics
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 94 Sequence Number: 052120 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: /journals/resource/954925225012_2