932 citations · 3.1k across the 28 of their papers we have counts for
28 papers
Quantum sensing of open systems: Estimation of damping constants and temperature
Jiaxuan Wang, Luiz Davidovich, Girish Saran Agarwal
We determine quantum precision limits for estimation of damping constants and temperature of lossy bosonic channels. A direct application would be the use of light for estimation o…
Interferometric sensing of the tilt angle of a Gaussian beam
S. P. Walborn, G. H. Aguilar, P. L. Saldanha +2
We investigate interferometric techniques to estimate the deflection angle of an optical beam and compare them to the direct detection of the beam deflection. We show that quantum…
Quantum-Enhanced Sensing from Hyper-Entanglement
S. P. Walborn, A. H. Pimentel, L. Davidovich +1
Hyperentanglement --- simultaneous entanglement between multiple degrees of freedom of two or more systems --- has been used to enhance quantum information tasks such as quantum co…
Measurement of a microwave field amplitude beyond the standard quantum limit
M. Penasa, S. Gerlich, T. Rybarczyk +6
We report a quantum measurement beyond the standard quantum limit (SQL) for the amplitude of a small displacement acting on a cavity field. This measurement uses as resource an ent…
Weak-value amplification as an optimal metrological protocol
G. Bié Alves, B. M. Escher, R. L. de Matos Filho +2
The implementation of weak-value amplification requires the pre- and post-selection of states of a quantum system, followed by the observation of the response of the meter, which i…
Experimental entanglement redistribution under decoherence channels
G. H. Aguilar, A. Valdés-Hernández, L. Davidovich +2
When an initially entangled pair of qubits undergoes local decoherence processes, there are a number of ways in which the original entanglement can spread throughout the multiparti…