Unconditional preparation of squeezed vacuum from Rabi interactions

TL;DR

This paper introduces a method to generate highly squeezed vacuum states using Rabi interactions, which are implementable in superconducting and trapped-ion systems, aiding scalable quantum computing.

Contribution

It presents a new protocol for producing high-quality squeezed states with low anti-squeezing using a minimal number of oscillator-qubit gates.

Findings

Efficient generation of highly squeezed vacuum states demonstrated.

Protocol compatible with existing quantum oscillator manipulation methods.

Potential for scalable continuous-variable quantum computation.

Abstract

Squeezed states of harmonic oscillators are a central resource for continuous-variable quantum sensing, computation and communication. Here we propose a method for the generation of very good approximations to highly squeezed vacuum states with low excess anti-squeezing using only a few oscillator-qubit coupling gates through a Rabi-type interaction Hamiltonian. This interaction can be implemented with several different methods, which has previously been demonstrated in superconducting circuit and trapped-ion platforms. The protocol is compatible with other protocols manipulating quantum harmonic oscillators, thus facilitating scalable continuous-variable fault-tolerant quantum computation.