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Books > Science & Mathematics > Physics > Quantum physics (quantum mechanics)
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Quantum-Enhanced Sensing Based on Time Reversal of Entangling Interactions (Paperback, Softcover reprint of the original 1st ed. 2018)
Loot Price: R2,873
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Quantum-Enhanced Sensing Based on Time Reversal of Entangling Interactions (Paperback, Softcover reprint of the original 1st ed. 2018)
Series: Springer Theses
Expected to ship within 10 - 15 working days
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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.
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