Work

Environment-Assisted Generation of Non-Gaussian Wave-Packet Quantum States

Year: 2026

Type: article

Abstract: Generating non-Gaussian states and converting them into traveling wave packets 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 Schrödinger cat states, Gottesman-Kitaev-Preskill states, and pair-cat states. We identify experimental superconducting-circuit platforms and realistic parameter regimes for our proposal.

Source: Physical Review Letters

DOI: 10.1103/dtd2-4vpn

Authors: Maryam Khanahmadi, Klaus Mølmer

Institutions: Chalmers University of Technology, University of Copenhagen

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funders: National Research Foundation, Danmarks Grundforskningsfond, Knut och Alice Wallenbergs Stiftelse, Wallenberg Center for Quantum Technology, Chalmers University of Technology