249 citations · 565 across the 9 of their papers we have counts for
4 papers · 1 filter
Ultrasensitive Atomic Spin Measurements with a Nonlinear Interferometer
R. J. Sewell, M. Napolitano, N. Behbood +3
We study nonlinear interferometry applied to a measurement of atomic spin and demonstrate a sensitivity that cannot be achieved by any linear-optical measurement with the same expe…
Feedback-cooling of an atomic spin ensemble
N. Behbood, M. Napolitano, G. Colangelo +4
We describe a measurement-and-feedback technique to deterministically prepare low-entropy states of atomic spin ensembles. Using quantum non-demolition measurement and incoherent o…
Quantum atom-light interfaces in the gaussian description for spin-1 systems
Giorgio Colangelo, Robert J. Sewell, Naeimeh Behbood +2
We extend the covariance-matrix description of atom--light quantum interfaces, originally developed for real and effective spin-1/2 atoms, to include "spin alignment" degrees of fr…
Real-time vector field tracking with a cold-atom magnetometer
Naeimeh Behbood, Ferran Martin Ciurana, Giorgio Colangelo +3
We demonstrate a fast three-axis optical magnetometer using cold, optically-trapped Rb gas as a sensor. By near-resonant Faraday rotation we record the free-induction decay…