Monitored quantum dynamics in tweezer-trapped Bose condensates

Tweezer-trapped neutral atoms provide a highly controllable quantum platform widely used in quantum computing and quantum simulation. In this work, we implement quantum nondemolition measurements to monitor the quantum dynamics of an array of tweezer-trapped Bose–Einstein condensates (BEC). We employ a spatial light modulator as a programmable phase plate in a 4-f imaging system, which in combination with an EMCCD and fast avalanche photodiode enables flexible switching between strong absorptive and weak dispersive detection. We present progress on studies of monitored matter-wave interference, a nonlinear quantum sensor formed from a Rabi-oscillating BEC, and the use of Rydberg excitations for entangling independently produced BECs. This platform opens new opportunities for quantum feedback control, many-body dynamics, and interactive quantum phenomena.