Fast adiabatic preparation of multi-squeezed states by jumping along the path

TL;DR

This paper introduces a new shortcut to adiabaticity method that enables rapid and high-fidelity preparation of multi-squeezed and hybrid entangled states by sampling along a quantum evolution path, simplifying previous approaches.

Contribution

The authors develop a novel STA technique that accelerates multi-squeezed state preparation without counterdiabatic control, improving efficiency and simplicity.

Findings

High-fidelity multi-squeezed state preparation achieved

Fast state preparation demonstrated

Hybrid entangled states successfully generated

Abstract

Multi-squeezed states, also known as generalized squeezed states, are valuable quantum non-Gaussian resources, because they can feature non-classical properties such as large phase-space Wigner negativities. In this work, we introduce a novel shortcuts to adiabaticity (STA) method for the fast preparation of multi-squeezed states. In contrast to previous STA methods, which rely on the use of counterdiabatic control to suppress unwanted non-adiabatic effects, our method simplifies the process and accelerates state preparation by selecting an appropriate sampling along a quantum evolution path. We demonstrate the high-fidelity and fast preparation of multi-squeezed states, as well as hybrid entangled states between a bosonic mode and a qubit.