| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 06011 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Nonlinear and Quantum Optics | |
| DOI | https://doi.org/10.1051/epjconf/202533506011 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533506011
Simultaneous Frequency Conversion and Spectral-Temporal Shaping of Single-Photon Pulses
1 Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warszawa, Poland
2 Department of Electrical & Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, Canada
3 Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, United Kingdom
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 22 September 2025
Abstract
We demonstrate a quantum interface that simultaneously converts the wavelength, bandwidth, and duration of single-photon-level pulses, enabling compatibility between disparate quantum systems. Using difference frequency generation in a lithium niobate waveguide driven by a highly chirped pump, we transform pulses from 798 nm, 5 GHz, 150 ps (quantum dot-like) to 1300 nm, 35 GHz, < 25 ps (telecom standard). This nonlinear optical time lens achieves over 80% internal conversion efficiency and compresses output pulses below detector resolution. The device offers a compact solution for integrating quantum emitters, memories, and telecom networks, with potential for further pulse shape control.
© The Authors, published by EDP Sciences, 2025
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