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Quantum metrology with nonclassical states of atomic ensembles
Quantum technologies exploit entanglement to revolutionize computing, measurements, and
communications. This has stimulated the research in different areas of physics to engineer …
communications. This has stimulated the research in different areas of physics to engineer …
Quantum-enhanced measurements without entanglement
Quantum-enhanced measurements exploit quantum mechanical effects for increasing the
sensitivity of measurements of certain physical parameters and have great potential for both …
sensitivity of measurements of certain physical parameters and have great potential for both …
Advances in quantum metrology
The statistical error in any estimation can be reduced by repeating the measurement and
averaging the results. The central limit theorem implies that the reduction is proportional to …
averaging the results. The central limit theorem implies that the reduction is proportional to …
Optical quantum metrology
The purpose of quantum technologies is to explore how quantum effects can improve on
existing solutions for the treatment of information. Quantum photonics sensing holds great …
existing solutions for the treatment of information. Quantum photonics sensing holds great …
Quantum Fisher information of entangled coherent states in the presence of photon loss
YM Zhang, XW Li, W Yang, GR ** - … Review A—Atomic, Molecular, and Optical …, 2013 - APS
We investigate the performance of entangled coherent states for quantum-enhanced phase
estimation. An exact analytical expression of quantum Fisher information is derived to show …
estimation. An exact analytical expression of quantum Fisher information is derived to show …
Experimental quantum computing without entanglement
Deterministic quantum computation with one pure qubit (DQC1) is an efficient model of
computation that uses highly mixed states. Unlike pure-state models, its power is not derived …
computation that uses highly mixed states. Unlike pure-state models, its power is not derived …
Prospective applications of optical quantum memories
An optical quantum memory can be broadly defined as a system capable of storing a
quantum state through interaction with light at optical frequencies. During the last decade …
quantum state through interaction with light at optical frequencies. During the last decade …
Quantum criticality as a resource for quantum estimation
We address quantum critical systems as a resource in quantum estimation and derive the
ultimate quantum limits to the precision of any estimator of the coupling parameters. In …
ultimate quantum limits to the precision of any estimator of the coupling parameters. In …
Quantum metrology for a general Hamiltonian parameter
Quantum metrology enhances the sensitivity of parameter estimation using the distinctive
resources of quantum mechanics such as entanglement. It has been shown that the …
resources of quantum mechanics such as entanglement. It has been shown that the …
How to perform the most accurate possible phase measurements
We present the theory of how to achieve phase measurements with the minimum possible
variance in ways that are readily implementable with current experimental techniques …
variance in ways that are readily implementable with current experimental techniques …