Experimental work on cold, trapped metastable noble gases is reviewed. The aspects which
distinguish work with these atoms from the large body of work on cold, trapped atoms in …

Scattering is used to probe matter and its interactions in all areas of physics. In ultracold
atomic gases, control over pairwise interactions enables us to investigate scattering in …

The Cauchy-Schwarz (CS) inequality—one of the most widely used and important
inequalities in mathematics—can be formulated as an upper bound to the strength of …

We demonstrate sub-Poissonian number differences in four-wave mixing of Bose-Einstein
condensates of metastable helium. The collision between two Bose-Einstein condensates …

Shock waves are examples of the far-from-equilibrium behavior of matter; they are
ubiquitous in nature, yet the underlying microscopic mechanisms behind their formation are …

In quantum many-body theory, all physical observables are described in terms of correlation
functions between particle creation or annihilation operators. Measurement of such …

Two-particle interference is a quintessential effect of quantum mechanics which is perhaps
most beautifully demonstrated by the Hong–Ou–Mandel effect. In this phenomenon, the …

We investigate the atom-optical analog of degenerate four-wave mixing by colliding two
Bose-Einstein condensates of metastable helium. The momentum distribution of the …

We propose and theoretically simulate an experiment for demonstrating a motional-state
Bell inequality violation for pairs of momentum-entangled atoms produced in Bose-Einstein …

We propose an experiment which can demonstrate quantum correlations in a physical
scenario as discussed in the seminal work of Einstein, Podolsky, and Rosen. Momentum …