Squeezing and entangling nuclear spins in helium 3

The scheme relies on metastability exchange collisions to mediate interactions between optically accessible metastable states and the ground-state nuclear spin, giving rise to

Of course the saturation of the build-up rate at high laser power (Fig. 15b) ultimately sets a limit to the manageable flow rates. Larger amounts of polarized gas can then be

We report here on selected results, mainly regarding nuclear relaxation, obtained using an intense pumping light in standard MEOP conditions (low gas pressure and low magnetic

The achieved nuclear polarizations, between 80% at 1.33 mbar and 25% at 67 mbar, show a substantial improvement at high pressures with respect to standard low-field optical

We convert the squeezing of the two linear polarization modes into quadrature entanglement and show how to find out the best entanglement generated in a two-mode system using

i) che two extreme points (in the direction of the field amplitude) of the initial probability distribution M and N move on two circles centered on the origin (Fig. Since

I n later investiga- tions the same form was used, with greater numbers N of terms in the variational expansion.. This work with integer exponents reached its climax in

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