Individual-atom control in array through phase modulation

Performing parallel-gate operations while retaining low crosstalk is an essential step to transform arrays of individual atoms into powerful quantum computers and simulators. Current methods based on using AC stark shift to differentiate individual qubits are challenging due to large laser power requirements. We tackle such a problem by introducing a method to engineer single qubit gates through phase-modulated continuous driving. Distinct qubits can be individually addressed to high accuracy by simply tuning the modulation parameters, which significantly suppresses crosstalk effects. When arranged in a lattice structure, individual control with optimal crosstalk suppression is achieved. With the assistance of additional addressing light or multiple modulation frequencies, we develop two efficient implementations of parallel-gate operations. Our results pave the way to scaling up atom array platforms with low-error parallel-gate operations, without requiring complicated wavefront design or high-power laser beams.