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Quantum‐Enhanced Sensing Based on Time Reversal of Entangling Interactions

  • Book
  • © 2018

Overview

Authors:
  1. Daniel Linnemann

    1. Kirchhoff-Institut für Physik, Universität Heidelberg, Heidelberg, Germany

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  • Nominated as an outstanding Ph.D thesis by the University of Heidelberg, Heidelberg, Germany
  • Makes an important contribution to applied quantum technologies
  • Backs key results with intuitive arguments and instructive examples from classical mechanics and quantum optics

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (11 chapters)

  1. Front Matter

    Pages i-xviii
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  2. Introduction

    • Daniel Linnemann
    Pages 1-22

  3. Theoretical Basics

    1. Front Matter

      Pages 23-23
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    2. Quantum Mechanical Spin

      • Daniel Linnemann
      Pages 25-30

    3. Hamiltonian of a Spin-1 Bose-Einstein Condensate

      • Daniel Linnemann
      Pages 31-49

  4. Concepts of Time Reversal Interferometry

    1. Front Matter

      Pages 51-51
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    2. Spin Exchange as an Amplifier

      • Daniel Linnemann
      Pages 53-65

    3. Interferometry Concept Within the SU(1,1) Framework

      • Daniel Linnemann
      Pages 67-74

  5. Experimental Platform

    1. Front Matter

      Pages 75-75
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    2. Experimental System and Manipulation Techniques

      • Daniel Linnemann
      Pages 77-89

  6. Experimental Results

    1. Front Matter

      Pages 91-91
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    2. State and Process Characterisation

      • Daniel Linnemann
      Pages 93-105

    3. Quantum-Enhanced Sensing Based on Time Reversal

      • Daniel Linnemann
      Pages 107-126

    4. Interferometry Beyond Exact Time Reversal

      • Daniel Linnemann
      Pages 127-133

    5. Nonlinear Time Reversal as a Diagnostic Tool

      • Daniel Linnemann
      Pages 135-142

    6. Outlook

      • Daniel Linnemann
      Pages 143-150

  7. Back Matter

    Pages 151-165
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Keywords

About this book

Quantum mechanics entails effects like superpositions and entanglement, which have no classical counterparts. From a technological standpoint these counterintuitive quantum aspects can be viewed as an unexploited resource that can be harnessed to support various tasks, e.g. in the domains of computation, communication, and metrology.

In many applications, however, the potential of nonclassical states cannot practically be exploited due to detection inefficiencies. The authors address this limitation by experimentally realizing a novel detection scheme in which entangling interactions are time reversed. In this way, nonclassical many-particle states are disentangled, allowing them to be detected in a robust and technically feasible manner. In the context of quantum metrology, these nonlinear readout techniques extend the class of entangled probe states that can be leveraged for sensing applications without being limited by finite detector resolution.

The authors present an active atom interferometer, where both the entangled state preparation and disentangling readout involve parametric amplification. This “SU(1,1)” interferometer is implemented with the help of spinor Bose–Einstein condensates, where amplification is implemented by atomic collisions leading to spin exchange.

Authors and Affiliations

  • Kirchhoff-Institut für Physik, Universität Heidelberg, Heidelberg, Germany

    Daniel Linnemann

Bibliographic Information

  • Book Title: Quantum‐Enhanced Sensing Based on Time Reversal of Entangling Interactions

  • Authors: Daniel Linnemann

  • Series Title: Springer Theses

  • DOI: https://doi.org/10.1007/978-3-319-96008-1

  • Publisher: Springer Cham

  • eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)

  • Copyright Information: Springer Nature Switzerland AG 2018

  • Hardcover ISBN: 978-3-319-96007-4Published: 09 August 2018

  • Softcover ISBN: 978-3-030-07128-8Published: 28 December 2018

  • eBook ISBN: 978-3-319-96008-1Published: 28 July 2018

  • Series ISSN: 2190-5053

  • Series E-ISSN: 2190-5061

  • Edition Number: 1

  • Number of Pages: XVIII, 165

  • Number of Illustrations: 1 b/w illustrations, 63 illustrations in colour

  • Topics: Quantum Physics, Quantum Information Technology, Spintronics, Quantum Gases and Condensates

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