Squeezed heart

Squeezed Heart

A Squeezed Heart: ECG Changes with Pectus Excavatum

Pectus excavatum (PEx) is the most common congenital anomaly of the chest wall and is seen in association with many chromosomal syndromes and connective tissue disorders. It causes distortion of the physical and electrical orientation of the heart. We present a case with classic ECG changes along with a selected echocardiographic and a CT image.

Squeezed light from spin-squeezed atoms.

We propose to transfer quantum correlations from atoms to light by Raman scattering of a strong laser pulse on a spin-squeezed atomic sample. We prove that the emission is restricted to a single field mode which perfectly inherits the quantum correlations of the atomic system.

Squeezed Condensates

We analyse the atomic state obtained by photo-dissociation of a molecular Bose-Einsteincondensate. This process is equivalent to down-conversion in quantum optics where it is responsible for squeezing of the field amplitudes. Monte Carlo simulations derived from the Positive P description of the system, and approximate equations for second moments of the atomic field operators are introduced to...

Squeezed-light optical magnetometry.

We demonstrate a light-shot-noise-limited magnetometer based on the Faraday effect in a hot unpolarized ensemble of rubidium atoms. By using off-resonant, polarization-squeezed probe light, we improve the sensitivity of the magnetometer by 3.2 dB. The technique could improve the sensitivity of the most advanced magnetometers and quantum nondemolition measurements of atomic spin ensembles.