Environment-Assisted Generation of Non-Gaussian Wavepacket Quantum States

We present a hardware-efficient approach to prepare single mode travelling wave packets in non-Gaussian bosonic states with a superconducting circuit platform. Such states enable secure deterministic quantum communication between distant quantum processor units. Rather than first producing the non-G...

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Bibliographic Details
Main Authors Khanahmadi, Maryam, Mølmer, Klaus
Format Journal Article
LanguageEnglish
Published 06.04.2025
Subjects
Physics - Quantum Physics
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Summary:We present a hardware-efficient approach to prepare single mode travelling wave packets in non-Gaussian bosonic states with a superconducting circuit platform. Such states enable secure deterministic quantum communication between distant quantum processor units. Rather than first producing the non-Gaussian states in a cavity mode by a nonlinear process and subsequently releasing it to a waveguide, we propose and analyze a scheme that applies a combination of linear and nonlinear interactions and losses to form and emit the states in wave packets, controlled by the coherent excitation of the system. The system is subject to a non-linear anti-Hermitian Hamiltonian of high order due to losses of lower order, and our proposal enables efficient and deterministic creation of propagating two- and four-component cat states, grid states, and entangled pair-cat states.
DOI:10.48550/arxiv.2504.04513