Periodically Driven Array of Single Rydberg Atoms

TL;DR

This paper investigates how periodic frequency modulation of light fields influences the dynamics of single Rydberg atom arrays, revealing novel phenomena like state trapping, blockade effects, and correlated oscillations due to long-range interactions.

Contribution

It introduces a new approach to control Rydberg atom dynamics via periodic modulation, uncovering fundamental processes and complex behaviors not previously described.

Findings

Periodic modulation modifies Rabi coupling and dynamics.

Observation of state-dependent population trapping and blockade effects.

Identification of correlated Rabi oscillations from long-range interactions.

Abstract

An array of single Rydberg atoms driven by a frequency modulated light field is studied. The periodic modulation effectively modifies the Rabi coupling, leading to unprecedented dynamics in the presence of Rydberg-Rydberg interactions. They include state dependent population trapping, the Rydberg blockade for small and anti-blockades at large interaction strengths. Interestingly, the Schrieffer-wolf transformation reveals a fundamental process in Rydberg gases, correlated Rabi oscillations, arising from the long-range interactions, provides an alternative depiction for Rydberg blockade and it exhibits a nontrivial behaviour in the presence of periodic modulation. The dynamical localization of a many body configuration in a driven Rydberg-lattice is discussed.