A time-to-digital converter with steady calibration through single-photon detection
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866918354478956544 |
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| author | Bolaños, Matías Rubén Vogrig, Daniele Villoresi, Paolo Vallone, Giuseppe Stanco, Andrea |
| author_facet | Bolaños, Matías Rubén Vogrig, Daniele Villoresi, Paolo Vallone, Giuseppe Stanco, Andrea |
| contents | Time-to-Digital Converters (TDCs) are a crucial tool in a wide array of fields, in particular for quantum communication, where time taggers performance can severely affect the quality of the entire application. Nowadays, FPGA-based TDCs present a viable alternative to ASIC ones, once the non-linear behavior due to the intrinsic nature of the device is properly mitigated. To compensate for said nonlinearities, a calibration procedure is required, which should be maintained throughout its runtime. Here we present the design and the demonstration of a TDC that is FPGA-based showing a residual FWHM jitter of 27 ps, that is scalable for multichannel operation. The target application in Quantum Key Distribution (QKD) is discussed with a calibration method based on the exploitation of single-photon detection that does not require stopping the data acquisition or using any estimation methods, thus increasing accuracy and removing data loss. The calibration was tested in a relevant environment, investigating the behavior of the device between 5 °C and 80 °C. Moreover, our design is capable of continuously streaming up to 12 Mevents/s for up to ~1 week without the TDC overflowing making it ready for a real-life scenario deployment. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_01293 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A time-to-digital converter with steady calibration through single-photon detection Bolaños, Matías Rubén Vogrig, Daniele Villoresi, Paolo Vallone, Giuseppe Stanco, Andrea Signal Processing Instrumentation and Detectors Quantum Physics Time-to-Digital Converters (TDCs) are a crucial tool in a wide array of fields, in particular for quantum communication, where time taggers performance can severely affect the quality of the entire application. Nowadays, FPGA-based TDCs present a viable alternative to ASIC ones, once the non-linear behavior due to the intrinsic nature of the device is properly mitigated. To compensate for said nonlinearities, a calibration procedure is required, which should be maintained throughout its runtime. Here we present the design and the demonstration of a TDC that is FPGA-based showing a residual FWHM jitter of 27 ps, that is scalable for multichannel operation. The target application in Quantum Key Distribution (QKD) is discussed with a calibration method based on the exploitation of single-photon detection that does not require stopping the data acquisition or using any estimation methods, thus increasing accuracy and removing data loss. The calibration was tested in a relevant environment, investigating the behavior of the device between 5 °C and 80 °C. Moreover, our design is capable of continuously streaming up to 12 Mevents/s for up to ~1 week without the TDC overflowing making it ready for a real-life scenario deployment. |
| title | A time-to-digital converter with steady calibration through single-photon detection |
| topic | Signal Processing Instrumentation and Detectors Quantum Physics |
| url | https://arxiv.org/abs/2406.01293 |