NOON state of Bose atoms in the double-well potential via an excited-state quantum phase transition
NOON state of Bose atoms in the double-well potential via an excited-state quantum phase transition
We suggest a simple scheme for creating a NOON state of repulsively interacting Bose atoms in the double-well potential. The protocol consists of two steps. First, by setting atom-atom interactions to zero, the system is driven to the upper excited state. Second, the interactions are slowly increased and, simultaneously, the …