Shortcuts to adiabatic passage for multiqubit controlled phase gate

TL;DR

This paper introduces a rapid, robust method for implementing multiqubit controlled phase gates in cavity QED systems using Lewis-Riesenfeld invariants, significantly reducing operation time compared to previous schemes.

Contribution

It presents a novel shortcut approach to quantum phase gates that is faster and more robust, applicable to multiple qubits, based on Lewis-Riesenfeld invariants.

Findings

Operation time is shorter than previous methods.

The scheme demonstrates robustness against decoherence.

Numerical simulations confirm effective gate performance.

Abstract

We propose an alternative scheme of shortcuts to quantum phase gate in a much shorter time based on the approach of Lewis-Riesenfeld invariants in cavity quantum electronic dynamics (QED) systems. This scheme can be used to perform one-qubit phase gate, two-qubit controlled phase gate and also multiqubit controlled phase gate. The strict numerical simulation for some quantum gates are given, and demonstrate that the total operation time of our scheme is shorter than previous schemes and very robustness against decoherence.