Entangled Fock states for Robust Quantum Optical Metrology, Imaging, and Sensing

By Sean Huver, C. Wildfeuer, Jonathan P. Dowling. 2008

189 citations recorded by the source corpus.

We propose a class of path-entangled photon Fock states for robust quantum optical metrology, imaging, and sensing in the presence of loss. We model propagation loss with beam splitters and derive a reduced densitymatrix formalism from which we examine how photon loss affects coherence. It is shown that particular entangled number states, which contain a special superposition of photons in both arms of a Mach-Zehnder interferometer, are resilient to environmental decoherence. We demonstrate an order of magnitude greater visibility with loss than possible with path-entangled N ,0 + 0, N states. We also show that the effectiveness of a detection scheme is related to super-resolution visibility.

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

View Paper: https://www.semanticscholar.org/paper/cc1e1e693e385050bcb326ffc0f566c39d632383

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Advances in quantum metrology (2011, methodology): “Nonetheless, the shot noise can be beaten [103] and the optimal states to do so in the presence of loss have been calculated numerically using various optimization techniques for fixed number of input photons [104, 105] and for photon-number detection [106].”
Experimental quantum-enhanced estimation of a lossy phase shift (2009, background): “, which motivated a discussion of more general two-component superposition”
Quantum limits in optical interferometry (2014, background): “…protocols have been realized by many authors working in the field (Caves, 1981; Datta et al., 2011; Gilbert et al., 2008; Huelga et al., 1997; Huver et al., 2008; Rubin and Kaushik, 2007; Sarovar and Milburn, 2006; Shaji and Caves, 2007; Xiao et al., 1987), it has long remained an open…”