Time-Bin Properties of Photon Pairs from a 2GHz Waveguide Resonator
Abstract
We produce degenerate photon pairs called signal and idler via parametric down-conversion (PDC) in a Fabry-Pérot waveguide resonator having close to a 2GHz bandwidth in the telecom C-band. Our PDC source is based on a type-II periodically-poled Lithium Niobate waveguide with high-reflecting end facets forming the resonator. We measure the strength of the photon-pair correlation between signal and idler after selecting a single resonator mode from the multimode PDC emission. Thereafter, we investigate their sub-nanosecond long pulse shapes, in other words the time bins, with standard photon counting. We find that the time-bin durations vary significantly from each other, which can be predicted by the different optical losses of the cross-polarized signal and idler. Further, we simulate the temporal properties of signal and idler via the Fourier transform of their joint spectral characteristics. Our results deliver empiric insight about the time bins of photon pairs and are relevant for driving future quantum networks at the edge to narrow bandwidths but nevertheless in the pulsed regime.
Related
- Emission of time-ordered photon pairs from a coherently-driven Kerr microcavity
- Phase-controlled super-modes in a ‘lossy’ tri-waveguide coupled micro-ring resonator system
- Phase-controlled super-modes in a `lossy' tri-waveguide coupled micro-ring resonator system
- Stabilizing fluctuating Cooper pairs with a terahertz resonator
- Photon-pair characterization in an amorphous silicon waveguide
BibTeX
@misc{kazmaier2026timebin,
title = {{Time-Bin Properties of Photon Pairs from a 2GHz Waveguide Resonator}},
author = {Stefan Kazmaier and Kaisa Laiho},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.09545},
eprint = {2610.09545},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.09545},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Time-Bin Properties of Photon Pairs from a 2GHz Waveguide Resonator
AU - Stefan Kazmaier
AU - Kaisa Laiho
PY - 2026
DA - 2026/10/07
PB - arXiv
DO - 10.48550/arxiv.2610.09545
UR - https://arxiv.org/abs/2610.09545
AB - We produce degenerate photon pairs called signal and idler via parametric down-conversion (PDC) in a Fabry-Pérot waveguide resonator having close to a 2GHz bandwidth in the telecom C-band. Our PDC source is based on a type-II periodically-poled Lithium Niobate waveguide with high-reflecting end facets forming the resonator. We measure the strength of the photon-pair correlation between signal and idler after selecting a single resonator mode from the multimode PDC emission. Thereafter, we investigate their sub-nanosecond long pulse shapes, in other words the time bins, with standard photon counting. We find that the time-bin durations vary significantly from each other, which can be predicted by the different optical losses of the cross-polarized signal and idler. Further, we simulate the temporal properties of signal and idler via the Fourier transform of their joint spectral characteristics. Our results deliver empiric insight about the time bins of photon pairs and are relevant for driving future quantum networks at the edge to narrow bandwidths but nevertheless in the pulsed regime.
ER -