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  Measurement-Induced Long-Distance Entanglement of Superconducting Qubits using Optomechanical Transducers

Černotík, O., & Hammerer, K. (2016). Measurement-Induced Long-Distance Entanglement of Superconducting Qubits using Optomechanical Transducers. Physical Review A, 94: 012340. doi:10.1103/PhysRevA.94.012340.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-75CB-A Version Permalink: http://hdl.handle.net/21.11116/0000-0002-E91F-6
Genre: Journal Article

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 Creators:
Černotík, Ondřej, 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, Condensed Matter, Mesoscale and Nanoscale Physics, cond-mat.mes-hall
 Abstract: Although superconducting systems provide a promising platform for quantum computing, their networking poses a challenge as they cannot be interfaced to light---the medium used to send quantum signals through channels at room temperature. We show that mechanical oscillators can mediated such coupling and light can be used to measure the joint state of two distant qubits. The measurement provides information on the total spin of the two qubits such that entangled qubit states can be postselected. Entanglement generation is possible without ground-state cooling of the mechanical oscillators for systems with optomechanical cooperativity moderately larger than unity; in addition, our setup tolerates a substantial transmission loss. The approach is scalable to generation of multipartite entanglement and represents a crucial step towards quantum networks with superconducting circuits.

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 Dates: 2015-12-022016-07-292016
 Publication Status: Published in print
 Pages: Updated figures, close to published version
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1512.00768
DOI: 10.1103/PhysRevA.94.012340
URI: http://arxiv.org/abs/1512.00768
 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: 012340 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: /journals/resource/954925225012_2