Spin-squeezed states for metrology

Abstract

Spin-squeezing is a well-established "quantum technology", where well-designed correlations in an ensemble of two-level systems reduce the statistical uncertainty of spectroscopic experiments. This paper reviews some important advances in the field, with emphasis on the author's contributions concerning in particular the fundamental limits imposed by decoherence. Building on the material presented in the first part, new ideas and some promising developments are outlined in the last section.

in English and in Italian

References in corpus (7)

• Nonlinear atom interferometer surpasses classical precision limit
• Squeezing and entanglement in a Bose-Einstein condensate
• Quantum depletion of a homogeneous Bose-Einstein condensate
• Generation of a squeezed state of an oscillator by stroboscopic back-action-evading measurement
• Spin squeezing in a bimodal condensate: spatial dynamics and particle losses
• Long-lived entanglement generation of nuclear spins using coherent light
• Producing and storing spin-squeezed states and Greenberger-Horne-Zeilinger states in a one-dimensional optical lattice