Efficient Simulation of Nonreciprocal Many-body Physics via Quantum Feedback
Abstract
We present a scheme to efficiently simulate nonreciprocal many-body spin models using a non-Markovian open system. Our scheme utilizes a single quantum emitter coupled to a waveguide mode that is fed back to the same emitter after a time delay. With this coherent delayed feedback, an effective nonreciprocal interaction can be engineered, wherein the emitter at earlier times affects itself at later times, creating a scalable spin chain. We show that all the steady-state quantities of such spin models can be accessed through measurement of the emitter and the output field. Furthermore, using classical feedback that resets the emitter, quench dynamics from arbitrary product states can be simulated. We demonstrate striking features of nonreciprocal models, such as the Liouvillian skin effect, anomalous relaxation dynamics, and quasi-long-range order of output photons. Finally, we show that the proposal is amenable to experimental realization and robust to imperfections. Our work establishes a feasible way to scale up a nonreciprocal many-body system, and provides a new route towards generation of exotic states of light.
Related
- Coherent-feedback-enhanced nonreciprocal entanglement via directional optical parametric amplification
- Efficient Quantum Simulation of Linearized Vlasov--Poisson Dynamics Using Trotter and THRIFT Hamiltonian Simulation Methods
- Remote nonreciprocal magnon magnon entanglement via the Barnett effect with coherent feedback
- Efficient quantum simulation of unitary gates based on atomic ensembles
- NAQsim: Full-Stack Architecture Simulation Framework for Fast and Space-Efficient Neutral Atom Quantum Computing
BibTeX
@misc{vodenkova2026efficient,
title = {{Efficient Simulation of Nonreciprocal Many-body Physics via Quantum Feedback}},
author = {Kseniia Vodenkova and Andrew Pocklington and Fan Yang and Andrew Lingenfelter and Aashish A. Clerk and Hannes Pichler},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.02518},
eprint = {2609.02518},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.02518},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Efficient Simulation of Nonreciprocal Many-body Physics via Quantum Feedback
AU - Kseniia Vodenkova
AU - Andrew Pocklington
AU - Fan Yang
AU - Andrew Lingenfelter
AU - Aashish A. Clerk
AU - Hannes Pichler
PY - 2026
DA - 2026/09/18
PB - arXiv
DO - 10.48550/arxiv.2609.02518
UR - https://arxiv.org/abs/2609.02518
AB - We present a scheme to efficiently simulate nonreciprocal many-body spin models using a non-Markovian open system. Our scheme utilizes a single quantum emitter coupled to a waveguide mode that is fed back to the same emitter after a time delay. With this coherent delayed feedback, an effective nonreciprocal interaction can be engineered, wherein the emitter at earlier times affects itself at later times, creating a scalable spin chain. We show that all the steady-state quantities of such spin models can be accessed through measurement of the emitter and the output field. Furthermore, using classical feedback that resets the emitter, quench dynamics from arbitrary product states can be simulated. We demonstrate striking features of nonreciprocal models, such as the Liouvillian skin effect, anomalous relaxation dynamics, and quasi-long-range order of output photons. Finally, we show that the proposal is amenable to experimental realization and robust to imperfections. Our work establishes a feasible way to scale up a nonreciprocal many-body system, and provides a new route towards generation of exotic states of light.
ER -