Implementation of three-qubit Grover search in cavity QED

TL;DR

This paper demonstrates a practical implementation of a three-qubit Grover search algorithm in cavity QED using resonant interactions, showing high fidelity results despite cavity decay, and aligns with current experimental capabilities.

Contribution

It presents a feasible scheme for three-qubit Grover search in cavity QED considering cavity decay, advancing experimental quantum search implementations.

Findings

High fidelity search results despite cavity decay

Scheme compatible with current cavity QED technology

Efficient realization of three-qubit Grover search

Abstract

Using resonant interaction of three Rydberg atoms with a single-mode microwave cavity, we consider a realization of three-qubit Grover search algorithm in the presence of weak cavity decay, based on a previous idea for three-qubit quantum gate [Phys. Rev. A 73, 064304 (2006)]. We simulate the searching process under the influence of the cavity decay and show that our scheme could be achieved efficiently to find the marked state with high fidelity. The required operations are very close to the reach with current cavity QED techniques.