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Quantum technologies with hybrid systems.

Authors
  • Kurizki, Gershon
  • Bertet, Patrice
  • Kubo, Yuimaru
  • Mølmer, Klaus
  • Petrosyan, David
  • Rabl, Peter
  • Schmiedmayer, Jörg
Type
Published Article
Journal
Proceedings of the National Academy of Sciences
Publisher
Proceedings of the National Academy of Sciences
Publication Date
Mar 31, 2015
Volume
112
Issue
13
Pages
3866–3873
Identifiers
DOI: 10.1073/pnas.1419326112
PMID: 25737558
Source
Medline
Keywords
License
Unknown

Abstract

An extensively pursued current direction of research in physics aims at the development of practical technologies that exploit the effects of quantum mechanics. As part of this ongoing effort, devices for quantum information processing, secure communication, and high-precision sensing are being implemented with diverse systems, ranging from photons, atoms, and spins to mesoscopic superconducting and nanomechanical structures. Their physical properties make some of these systems better suited than others for specific tasks; thus, photons are well suited for transmitting quantum information, weakly interacting spins can serve as long-lived quantum memories, and superconducting elements can rapidly process information encoded in their quantum states. A central goal of the envisaged quantum technologies is to develop devices that can simultaneously perform several of these tasks, namely, reliably store, process, and transmit quantum information. Hybrid quantum systems composed of different physical components with complementary functionalities may provide precisely such multitasking capabilities. This article reviews some of the driving theoretical ideas and first experimental realizations of hybrid quantum systems and the opportunities and challenges they present and offers a glance at the near- and long-term perspectives of this fascinating and rapidly expanding field.

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