Implementation of many-qubit Grover search by cavity QED

TL;DR

This paper proposes a cavity QED-based method for implementing multi-qubit Grover search, demonstrating high fidelity and success probability even with cavity decay, supported by analytical and numerical analysis.

Contribution

It introduces a novel cavity QED scheme for N-qubit Grover search that accounts for dissipation effects, advancing practical quantum search implementations.

Findings

High fidelity and success probability achieved

Analytical understanding of dissipation effects

Feasible for N>3 qubits in cavity QED

Abstract

We study the possibility of an implementation of N-qubit (N>3) Grover search in cavity QED, based on a fast operation of N-qubit controlled phase-flip with atoms in resonance with the cavity mode. We demonstrate both analytically and numerically that, our scheme could be achieved efficiently to find a marked state with high fidelity and high success probability. As cavity decay is involved in our quantum trajectory treatment, we could analytically understand the implementation of a Grover search subject to dissipation, which would be very helpful for relevant experiments.