Collective Floquet engineering between two distant superconducting artificial atoms
Abstract
A one-dimensional waveguide is a crucial medium for transferring propagating quantum information between remote qubits, yet the photon-mediated interaction is typically fixed by the static device geometry, qubit parameters, and their couplings to the transmission line. Such an interaction can be engineered to be coherent or dissipative via virtual- or real-photon exchange, respectively, yet its effective strength remains fixed in either case. Here we demonstrate dynamical control over this interaction by applying Floquet engineering to two superconducting qubits coupled to a waveguide terminated by a capacitive mirror. By positioning one qubit at an antinode and the other qubit at a node or an antinode of the resonant standing wave, we realize a Hermitian or non-Hermitian coupling between the two qubits. A periodic flux drive of the qubit frequencies then enables on-demand control of the coherent energy splitting and the collective decay. Our results establish Floquet engineering as a route to dynamically reshape both coherent and dissipative photon-mediated interactions between remote quantum emitters.
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BibTeX
@misc{huang2026collective,
title = {{Collective Floquet engineering between two distant superconducting artificial atoms}},
author = {Y. -H. Huang and Jiale Yuan and Z. Q. Niu and Y. -S. Tsai and K. -C. Yu and P. -H. Hsu and K. -M. Hsieh and Haw-Tyng Huang and J. C. Chen and P. Y. Wen and Y. -H. Lin and Z. -R. Lin and Da-Wei Wang and I. -C. Hoi},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.16210},
eprint = {2610.16210},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.16210},
}
RIS
TY - UNPB
TI - Collective Floquet engineering between two distant superconducting artificial atoms
AU - Y. -H. Huang
AU - Jiale Yuan
AU - Z. Q. Niu
AU - Y. -S. Tsai
AU - K. -C. Yu
AU - P. -H. Hsu
AU - K. -M. Hsieh
AU - Haw-Tyng Huang
AU - J. C. Chen
AU - P. Y. Wen
AU - Y. -H. Lin
AU - Z. -R. Lin
AU - Da-Wei Wang
AU - I. -C. Hoi
PY - 2026
DA - 2026/10/12
PB - arXiv
DO - 10.48550/arxiv.2610.16210
UR - https://arxiv.org/abs/2610.16210
AB - A one-dimensional waveguide is a crucial medium for transferring propagating quantum information between remote qubits, yet the photon-mediated interaction is typically fixed by the static device geometry, qubit parameters, and their couplings to the transmission line. Such an interaction can be engineered to be coherent or dissipative via virtual- or real-photon exchange, respectively, yet its effective strength remains fixed in either case. Here we demonstrate dynamical control over this interaction by applying Floquet engineering to two superconducting qubits coupled to a waveguide terminated by a capacitive mirror. By positioning one qubit at an antinode and the other qubit at a node or an antinode of the resonant standing wave, we realize a Hermitian or non-Hermitian coupling between the two qubits. A periodic flux drive of the qubit frequencies then enables on-demand control of the coherent energy splitting and the collective decay. Our results establish Floquet engineering as a route to dynamically reshape both coherent and dissipative photon-mediated interactions between remote quantum emitters.
ER -