Preparation of conditionally-squeezed states in qubit-oscillator systems

• URL: http://arxiv.org/abs/2504.01664v1
• Date: Wed, 02 Apr 2025 12:15:08 GMT
• Title: Preparation of conditionally-squeezed states in qubit-oscillator systems
• Authors: Marius K. Hope, Jonas Lidal, Francesco Massel,
• Abstract summary: We propose a protocol for generating superpositions of squeezed states in a quantum harmonic oscillator.<n>We numerically evaluate the robustness of the state-preparation scheme in the presence of decoherence.<n>As a potential application, we introduce a quantum error-correcting code based on conditionally-squeezed states and analyze its error-mitigation properties.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Inspired by recent advances in the manipulation of superconducting circuits coupled to mechanical modes in the quantum regime, we propose a protocol for generating superpositions of orthogonally squeezed states in a quantum harmonic oscillator. The protocol relies on a quadratic coupling between the oscillator and a qubit, and is conceptually similar to methods used for preparing cat states in qubit-oscillator systems. We numerically evaluate the robustness of the state-preparation scheme in the presence of decoherence, considering environmental coupling for both the harmonic oscillator and the qubit. As a potential application, we introduce a quantum error-correcting code based on conditionally-squeezed states and analyze its error-mitigation properties.

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