Environment-Assisted Generation of Non-Gaussian Wavepacket Quantum States

• URL: http://arxiv.org/abs/2504.04513v2
• Date: Wed, 15 Oct 2025 11:14:24 GMT
• Title: Environment-Assisted Generation of Non-Gaussian Wavepacket Quantum States
• Authors: Maryam Khanahmadi, Klaus Mølmer,
• Abstract summary: We present a hardware-efficient approach that simultaneously achieves both tasks by combining an engineered nonlinear dissipation with a linear transmission loss from a superconducting circuit to a waveguide.<n>This combination of dissipative channels leverages low-order interactions to induce a high-order nonlinearity, enabling deterministic emission of a wide range of non-Gaussian, error-correctable states.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Generating non-Gaussian states and converting them into traveling wavepackets is crucial yet challenging for scalable, fault-tolerant quantum computing. We present a hardware-efficient approach that simultaneously achieves both tasks by combining an engineered nonlinear dissipation with a linear transmission loss from a superconducting circuit to a waveguide. This combination of dissipative channels leverages low-order interactions to induce a high-order nonlinearity, enabling deterministic emission of a wide range of non-Gaussian, error-correctable states, such as Schr\"odinger cat states, GKP states, and pair-cat states. We identify experimental superconducting circuit platforms and realistic parameter regimes for our proposal.

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