84 citations · 559 across the 13 of their papers we have counts for
4 papers · 1 filter
Entanglement and extreme planar spin squeezing
Giuseppe Vitagliano, Giorgio Colangelo, Ferran Martin Ciurana +3
We introduce an entanglement-depth criterion optimized for planar quantum squeezed (PQS) states. It is connected with the sensitivity of such states for estimating an arbitrary, no…
Entanglement-enhanced phase estimation without prior phase information
G. Colangelo, F. Martin Ciurana, G. Puentes +2
We study the generation of planar quantum squeezed (PQS) states by quantum non-demolition (QND) measurement of a cold ensemble of Rb atoms. Precise calibration of the QND me…
Simultaneous tracking of spin angle and amplitude beyond classical limits
Giorgio Colangelo, Ferran Martin Ciurana, Lorena C. Bianchet +2
We show how simultaneous, back-action evading tracking of non-commuting observables can be achieved in a widely-used sensing technology, atomic interferometry. Using high-dynamic-r…
Entanglement-enhanced radio-frequency field detection and waveform sensing
F. Martin Ciurana, G. Colangelo, L. Slodicka +2
We demonstrate a new technique for detecting components of arbitrarily-shaped radio-frequency waveforms based on stroboscopic back-action evading measurements. We combine quantum n…