Suppressing crosstalk for Rydberg quantum gates

Scientists have introduced a technique for reducing crosstalk in the implementation of controlled-Z gates on neutral atom quantum computers that use local laser addressing. A fraction of the light applied to target atoms typically reaches neighboring atoms, leading to errors in the quantum operations. The analysis focused on a configuration with two atoms undergoing the gate and a third atom affected Numerical simulations of the protocol show an improvement in gate fidelity The work demonstrates that the protocol can suppress the leading order amplitude error. Results indicate that local addressing can support high-fidelity quantum gates on Rydberg-based quantum computers.