Experimental quantum-enhanced estimation of a lossy phase shift

By M. Kacprowicz, Rafal Demkowicz-Dobrzanski, W. Wasilewski, K. Banaszek, Ian A. Walmsley. 2009

210 citations recorded by the source corpus.

Evidence that appropriately engineered quantum states outperform both standard and N00N states in the precision of phase estimation — even in the presence of losses and decoherence — is presented. The results show that the strategy for realizing the quantum enhancement of metrology is quite distinct from protecting quantum information encoded in light.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/05830d9c934ba3b7c0b26938648626bd245eb408

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Quantum limits in optical interferometry (2014, unknown): “This makes the model applicable in typical experimental realization of quantum enhanced interferometry (Kacprowicz et al., 2010; Spagnolo et al., 2012; Vitelli et al., 2010), and most notably, when analyzing bounds on quantum enhancement in gravitational-wave detectors (DemkowiczDobrzański et al.,…”
Entanglement-enhanced measurement of a completely unknown phase (2010, result): “As in other experiments that have used this techniqu”
Quantum-enhanced measurements without entanglement (2017, background): “…Dowling, 1998, 2008; Dunningham et al., 2002; Giovannetti et al., 2004, 2011; Higgins et al., 2007; Holland et al., 2002; Holland and Burnett, 1993; Kacprowicz et al., 2010; Kitagawa and Ueda, 1993; Korbicz et al., 2005; Pezzè and Smerzi, 2009; Sanders and Milburn, 1995; Sørensen et al., 2001;…”
General framework for estimating the ultimate precision limit in noisy quantum-enhanced metrology (2011, unknown): “Experimental confirmation with twophoton entangled states was presented in [25], while bounds found in [5] for global estimation and in [6] for local estimation lead to a 1/ p N scaling.”