Shortcuts to adiabaticity in superconducting circuits for fast multi-partite state generation

TL;DR

This paper introduces a reverse-engineering method to rapidly generate multi-partite quantum gates in superconducting circuits, achieving nanosecond-scale operation unaffected by system size and resilient to dissipation.

Contribution

It presents a novel reverse-engineering approach for designing longitudinal qubit couplings to enable fast, scalable multi-partite quantum gate generation in superconducting circuits.

Findings

Generation time is at the nanosecond scale, independent of system size.

Protocol is robust against dissipative effects.

Implementation feasible with current circuit QED technology.

Abstract

Shortcuts to adiabaticity provides a flexible method to accelerate and improve a quantum control task beyond adiabatic criteria. Here we propose the reverse-engineering approach to design the longitudinal coupling between a set of qubits coupled to several field modes, for achieving a fast generation of multi-partite quantum gates in photonic or qubit-based architecture. We show that the enhancing generation time is at the nanosecond scale that does not scale with the number of system components. In addition, our protocol does not suffer noticeable detrimental effects due to the dissipative dynamics. Finally, the possible implementation is discussed with the state-of-the-art circuit quantum electrodynamics architecture.