Dynamically modulated light-matter interactions for ancilla-tolerant bosonic control
Abstract
Strong light-matter interactions are central to state-of-the-art quantum technologies, spanning platforms as diverse as Rydberg atoms, trapped ions, and superconducting circuits. In superconducting circuits, the strong dispersive coupling between microwave photons (light) and ancillary qubits (matter) has enabled universal bosonic control and quantum error correction. However, this always-on dispersive interaction propagates errors from the ancillary qubits to the bosonic systems both while idling and when performing operations, introducing a trade-off between control strength and fidelity. We break this trade-off by introducing a parametrically activated hybridization between the bosonic modes and ancilla qubits, keeping both elements decoupled when not active. When activated, this hybridization mediates a dynamic light-matter coupling with non-trivial engineered symmetries, permitting resilience to ancilla decay and dephasing. This dynamic coupling functions as a new control primitive that offers a route to bosonic processors whose performance is set by the oscillator, rather than the ancilla.
Related
- Protecting bosonic codes from ancilla-induced errors with continuous-variable flags
- Fault-Tolerant Heisenberg-Limited Quantum Metrology with Bosonic Probes
- Efficient thermalization of one-dimensional noncommuting Hamiltonians via system-bath interactions with Θ(n) ancilla qubits
- Zoology of collective patterns modulated by non-reciprocal, long-range interactions
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BibTeX
@misc{maiti2026dynamically,
title = {{Dynamically modulated light-matter interactions for ancilla-tolerant bosonic control}},
author = {Aniket Maiti and John W. O. Garmon and Daniel K. Weiss and Takahiro Tsunoda and Yao Lu and Steven M. Girvin and Robert J. Schoelkopf},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.05460},
eprint = {2611.05460},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.05460},
}
RIS
TY - UNPB
TI - Dynamically modulated light-matter interactions for ancilla-tolerant bosonic control
AU - Aniket Maiti
AU - John W. O. Garmon
AU - Daniel K. Weiss
AU - Takahiro Tsunoda
AU - Yao Lu
AU - Steven M. Girvin
AU - Robert J. Schoelkopf
PY - 2026
DA - 2026/11/03
PB - arXiv
DO - 10.48550/arxiv.2611.05460
UR - https://arxiv.org/abs/2611.05460
AB - Strong light-matter interactions are central to state-of-the-art quantum technologies, spanning platforms as diverse as Rydberg atoms, trapped ions, and superconducting circuits. In superconducting circuits, the strong dispersive coupling between microwave photons (light) and ancillary qubits (matter) has enabled universal bosonic control and quantum error correction. However, this always-on dispersive interaction propagates errors from the ancillary qubits to the bosonic systems both while idling and when performing operations, introducing a trade-off between control strength and fidelity. We break this trade-off by introducing a parametrically activated hybridization between the bosonic modes and ancilla qubits, keeping both elements decoupled when not active. When activated, this hybridization mediates a dynamic light-matter coupling with non-trivial engineered symmetries, permitting resilience to ancilla decay and dephasing. This dynamic coupling functions as a new control primitive that offers a route to bosonic processors whose performance is set by the oscillator, rather than the ancilla.
ER -