Correlated Rydberg Electromagnetically Induced Transparencys

TL;DR

This paper investigates how Rydberg atom interactions induce both local and nonlocal optical nonlinearities in EIT spectra, enabling control of photon correlations between separated ensembles for quantum information applications.

Contribution

It demonstrates the emergence of nonlocal optical nonlinearity between spatially separated Rydberg ensembles due to vdW interactions, advancing quantum control techniques.

Findings

Local optical nonlinearity depends on input probe intensity and photon statistics.

Nonlocal nonlinearity allows manipulation of probe correlation via another ensemble.

Potential applications in quantum networks and quantum information processing.

Abstract

In the regime of Rydberg electromagnetically induced transparency, we study the correlated behaviors between the transmission spectra of a pair of probe fields passing through respective parallel one-dimensional cold Rydberg ensembles. Due to the van der Waals (vdW) interactions between Rydberg atoms, each ensemble exhibits a local optical nonlinearity, where the output EIT spectra are sensitive to both the input probe intensity and the photonic statistics. More interestingly, a nonlocal optical nonlinearity emerges between two spatially separated ensembles, as the probe transmissivity and probe correlation at the exit of one Rydberg ensemble can be manipulated by the probe field at the input of the other Rydberg ensemble. Realizing correlated Rydberg EITs holds great potential for applications in quantum control, quantum network, quantum walk and so on.