Produktbild: QuantumEnhanced Sensing Based on Time Reversal of Entangling Interactions

QuantumEnhanced Sensing Based on Time Reversal of Entangling Interactions

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Springer Theses

ISBN: 3319960075
ISBN 13: 9783319960074
Autor: Linnemann, Daniel
Verlag: Springer Verlag GmbH
Umfang: xviii, 165 S., 1 s/w Illustr., 63 farbige Illustr., 165 p. 64 illus., 63 illus. in color.
Erscheinungsdatum: 09.08.2018
Auflage: 1/2018
Produktform: Gebunden/Hardback
Einband: Gebunden

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.

Artikelnummer: 5246393 Kategorie:

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