Towards an experimentally feasible controlled-phase gate on two blockaded Rydberg atoms

TL;DR

This paper explores implementing a controlled-Z gate on two Rydberg atoms using an adiabatic scheme, optimizing parameters for higher fidelity within experimental constraints.

Contribution

It adapts and optimizes an adiabatic Rydberg gate scheme for realistic experimental setups, enhancing feasibility and fidelity.

Findings

Optimized experimental parameters for improved gate fidelity

Analysis of experimental constraints on gate success

Demonstrated feasibility of controlled-phase gate with current technology

Abstract

We investigate the implementation of a controlled-Z gate on a pair of Rydberg atoms in spatially separated dipole traps where the joint excitation of both atoms into the Rydberg level is strongly suppressed (the Rydberg blockade). We follow the adiabatic gate scheme of Jaksch et al. [1], where the pair of atoms are coherently excited using lasers, and apply it to the experimental setup outlined in Ga\"etan et al. [2]. We apply optimisation to the experimental parameters to improve gate fidelity, and consider the impact of several experimental constraints on the gate success.