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Quantum‐Enhanced Sensing Based on Time Reversal of Entangling Interactions - Daniel Linnemann

Quantum‐Enhanced Sensing Based on Time Reversal of Entangling Interactions

Buch | Softcover
XVIII, 165 Seiten
2018 | 1. Softcover reprint of the original 1st ed. 2018
Springer International Publishing (Verlag)
978-3-030-07128-8 (ISBN)
CHF 164,75 inkl. MwSt
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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.

Introduction.- Part I: Theoretical Basics.- Quantum Mechanical Spin.- Hamiltonian of a Spin-1 Bose-Einstein Condensate.- Part II: Concepts of Time Reversal Interferometry.- Spin Exchange as an Amplifier.- Interferometry Concept Within the SU(1,1) Framework.- Part III: Experimental Platform.- Experimental System and Manipulation Techniques.- Part IV: Experimental Results.- State and Process Characterization.-  Quantum-Enhanced Sensing Based on Time Reversal.- Interferometry Beyond Exact Time Reversal.- Nonlinear Time Reversal as a Diagnostic Tool.- Outlook.

Erscheinungsdatum
Reihe/Serie Springer Theses
Zusatzinfo XVIII, 165 p. 64 illus., 63 illus. in color.
Verlagsort Cham
Sprache englisch
Maße 155 x 235 mm
Gewicht 290 g
Themenwelt Naturwissenschaften Physik / Astronomie Atom- / Kern- / Molekularphysik
Naturwissenschaften Physik / Astronomie Festkörperphysik
Naturwissenschaften Physik / Astronomie Quantenphysik
Naturwissenschaften Physik / Astronomie Theoretische Physik
Technik Maschinenbau
Schlagworte Active Atom Interferometry • Atom Interferometry • Harnessing entanglement • Interaction-Based Readout • Interferometry with Amplifiers • Nonlinear Readout • Quantum-Enhanced Interferometry • quantum metrology • Time Reversal • Time Reversal of Entangling Interactions
ISBN-10 3-030-07128-6 / 3030071286
ISBN-13 978-3-030-07128-8 / 9783030071288
Zustand Neuware
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