Quantum metrology is the state-of-the-art measurement technology. It uses quantum resources to enhance the sensitivity of phase estimation over that achievable by classical physics. While single parameter estimation theory has been widely investigated, much less is known about the simultaneous estimation of multiple phases, which finds key applications in imaging and sensing. In this manuscript we provide conditions of useful particle (qudit) entanglement for multiphase estimation and adapt them to multiarm Mach-Zehnder interferometry. We theoretically discuss benchmark multimode Fock states containing useful qudit entanglement and overcoming the sensitivity of separable qudit states in three and four arm Mach-Zehnder-like interferometers - currently within the reach of integrated photonics technology.

Quantum-enhanced multiparameter estimation in multiarm interferometers / Ciampini, MARIO ARNOLFO; Spagnolo, Nicolo'; Vitelli, Chiara; Pezze', Luca; Smerzi, Augusto; Sciarrino, Fabio. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - ELETTRONICO. - 6:(2016), p. 28881. [10.1038/srep28881]

Quantum-enhanced multiparameter estimation in multiarm interferometers

CIAMPINI, MARIO ARNOLFO;SPAGNOLO, Nicolo';VITELLI, Chiara;PEZZE', LUCA;SCIARRINO, Fabio
2016

Abstract

Quantum metrology is the state-of-the-art measurement technology. It uses quantum resources to enhance the sensitivity of phase estimation over that achievable by classical physics. While single parameter estimation theory has been widely investigated, much less is known about the simultaneous estimation of multiple phases, which finds key applications in imaging and sensing. In this manuscript we provide conditions of useful particle (qudit) entanglement for multiphase estimation and adapt them to multiarm Mach-Zehnder interferometry. We theoretically discuss benchmark multimode Fock states containing useful qudit entanglement and overcoming the sensitivity of separable qudit states in three and four arm Mach-Zehnder-like interferometers - currently within the reach of integrated photonics technology.
2016
Quantum Metrology; Quantum Information; Interferometry
01 Pubblicazione su rivista::01a Articolo in rivista
Quantum-enhanced multiparameter estimation in multiarm interferometers / Ciampini, MARIO ARNOLFO; Spagnolo, Nicolo'; Vitelli, Chiara; Pezze', Luca; Smerzi, Augusto; Sciarrino, Fabio. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - ELETTRONICO. - 6:(2016), p. 28881. [10.1038/srep28881]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/934840
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