PreprintCC BY 4.0arXiv
Time domain non-linear quantum interferometry
Abstract
Interferometry is a powerful method for studying many fundamental phenomena ranging from gravitational waves to anyon excitations. Besides loss of coherence in the interferometer paths, quantum mechanics sets an incompressible bound for linear interferometry arising from the quantum noise of the light beam, called the shot noise limit. Here, we implement a non-linear quantum interferometer that uses a microwave cavity and a magnetic field resilient anharmonic superconducting quantum circuit made of granular aluminum. The circuit enables interferometry beyond the shot noise limit. A direct application of our findings is the detection of dark matter (axions or dark photons), high-frequency gravitational waves or astronomical masers.
Versions
Related
- Directional Response Optimization through Linear Recombination of Time-Delay Interferometry Channels in Space-based Gravitational Wave Detection
- Linear-Time Encodable Quantum Codes near the CSS GV Bound
- Time-Domain Observables for Resonant Scattering in Quantum Simulations of Lattice Gauge Theory
- Quantum digital simulations of time-domain semiconductor spectroscopy in the semi-classical approximation
- Influence of quantum decoherence on black hole shadow visibility and time domain echoes
BibTeX
@misc{fruy2026time,
title = {{Time domain non-linear quantum interferometry}},
author = {C. Fruy and A. Théry and B. Hue and W. Legrand and L. Jarjat and J. Craquelin and M. R. Delbecq and A. Cottet and T. Kontos},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.13749},
eprint = {2609.13749},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.13749},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Time domain non-linear quantum interferometry
AU - C. Fruy
AU - A. Théry
AU - B. Hue
AU - W. Legrand
AU - L. Jarjat
AU - J. Craquelin
AU - M. R. Delbecq
AU - A. Cottet
AU - T. Kontos
PY - 2026
DA - 2026/09/12
PB - arXiv
DO - 10.48550/arxiv.2609.13749
UR - https://arxiv.org/abs/2609.13749
AB - Interferometry is a powerful method for studying many fundamental phenomena ranging from gravitational waves to anyon excitations. Besides loss of coherence in the interferometer paths, quantum mechanics sets an incompressible bound for linear interferometry arising from the quantum noise of the light beam, called the shot noise limit. Here, we implement a non-linear quantum interferometer that uses a microwave cavity and a magnetic field resilient anharmonic superconducting quantum circuit made of granular aluminum. The circuit enables interferometry beyond the shot noise limit. A direct application of our findings is the detection of dark matter (axions or dark photons), high-frequency gravitational waves or astronomical masers.
ER -