2 papers
quant-ph2017
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…
physics.atom-ph2017
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…