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Quantum-enhanced measurements without entanglement

Braun, Daniel ; Adesso, Gerardo ; Benatti, Fabio ; Floreanini, Roberto ; Marzolino, Ugo ; Mitchell, Morgan W. ; Pirandola, Stefano

Reviews of modern physics, 2018-09, Vol.90 (3), p.035006, Article 035006 [Periódico revisado por pares]

College Park: American Institute of Physics

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Título:
Quantum-enhanced measurements without entanglement
Autor: Braun, Daniel ; Adesso, Gerardo ; Benatti, Fabio ; Floreanini, Roberto ; Marzolino, Ugo ; Mitchell, Morgan W. ; Pirandola, Stefano
Assuntos: Entangled states ; Parameter estimation ; Parameter sensitivity ; Phase transitions ; Physical properties ; Quantum entanglement ; Quantum mechanics ; Quantum theory ; Sensitivity enhancement
É parte de: Reviews of modern physics, 2018-09, Vol.90 (3), p.035006, Article 035006
Descrição: Quantum-enhanced measurements exploit quantum mechanical effects for increasing the sensitivity of measurements of certain physical parameters and have great potential for both fundamental science and concrete applications. Most of the research has so far focused on using highly entangled states, which are, however, difficult to produce and to stabilize for a large number of constituents. In the following alternative mechanisms are reviewed, notably the use of more general quantum correlations such as quantum discord, identical particles, or nontrivial Hamiltonians; the estimation of thermodynamical parameters or parameters characterizing nonequilibrium states; and the use of quantum phase transitions. Both theoretically achievable enhancements and enhanced sensitivities not primarily based on entanglement that have already been demonstrated experimentally and indicate some possible future research directions are described.
Editor: College Park: American Institute of Physics
Idioma: Inglês

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Quantum-enhanced measurements without entanglement

Braun, Daniel ; Adesso, Gerardo ; Benatti, Fabio ; Floreanini, Roberto ; Marzolino, Ugo ; Mitchell, Morgan W. ; Pirandola, Stefano

College Park: American Institute of Physics

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