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Clock synchronization with pulsed single photon sources

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Christopher Spiess, Fabian Steinlechner

Quantum Physics · Submitted 23 Dec 2022

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We achieve an average root mean square synchronization jitter of 3.0 ps and a stability comparable to systems with ultra-stable clocks (54 ps at 1 second integration time, in terms of Allan time deviation).

how it is stated · asserted 1.00 read the record →

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arXiv ID2212.12589 (version 2)
Pith IDLCXQAH7A, Pith's permanent record of this paper and its review
CitationChristopher Spiess, Fabian Steinlechner. "Clock synchronization with pulsed single photon sources." arXiv:2212.12589 (2022). https://pith.science/paper/LCXQAH7A
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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,277 input tokens.

What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.21 · human participants 0.02 · controlled comparison 0.21 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.69 · mentions code or data availability 0.03.

The abstract, sentence by sentence

arXiv listing abstract v2. Results and the main claim are underlined; .

Photonic quantum technology requires precise, time-resolved identification of photodetection events. In distributed quantum networks with spatially separated and drifting time references, achieving high precision is particularly challenging. Here we build on recent advances of using single-photons for time transfer and employ and quantify a fast postprocessing scheme designed to pulsed single-photon sources. We achieve an average root mean square synchronization jitter of 3.0 ps and a stability comparable to systems with ultra-stable clocks (54 ps at 1 second integration time, in terms of Allan time deviation). Our algorithm compensates substantial clock imperfections from crystal oscillators, is superior for low signal scenarios, and allows the quantum communication networks to transmit data simultaneously to time transfer.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 Photonic quantum technology requires precise, time-resolved identification of photodetection events. background 1.00 0.05 0.02 asserted 1.00
s1 In distributed quantum networks with spatially separated and drifting time references, achieving high precision is particularly challenging. background 0.88 0.05 0.02 asserted 1.00
s2 Here we build on recent advances of using single-photons for time transfer and employ and quantify a fast postprocessing scheme designed to pulsed single-photon sources. contribution 0.81 0.78 0.07 asserted 0.95
s3 We achieve an average root mean square synchronization jitter of 3.0 ps and a stability comparable to systems with ultra-stable clocks (54 ps at 1 second integration time, in terms of Allan time deviation). result 1.00 0.96 0.64 asserted 1.00
s4 Our algorithm compensates substantial clock imperfections from crystal oscillators, is superior for low signal scenarios, and allows the quantum communication networks to transmit data simultaneously to time transfer. interpretation 0.48 0.92 0.36 asserted 1.00

What kind of paper the classifier reports this is: method or tool 0.94 · evidence from observation or experiment 1.00.

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  • C citations
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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

Photonic quantum technology requires precise, time-resolved identification of photodetection events. In distributed quantum networks with spatially separated and drifting time references, achieving high precision is particularly challenging. Here we build on recent advances of using single-photons for time transfer and employ and quantify a fast postprocessing scheme designed to pulsed single-photon sources. We achieve an average root mean square synchronization jitter of 3.0 ps and a stability comparable to systems with ultra-stable clocks (54 ps at 1 second integration time, in terms of Allan time deviation). Our algorithm compensates substantial clock imperfections from crystal oscillators, is superior for low signal scenarios, and allows the quantum communication networks to transmit data simultaneously to time transfer.

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1 arXiv paper cite this in 2 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 1 sentence without a confident label

Uses its method or tool 1 paper

What it cites · 7 sentences without a confident label

Compares with 1 paper
  • In comparison, Fast-Fourier transformations require more than 30 seconds for the same array size and limit the clock frequency resolution to 140 ns/s for continuous wave sources [ref] .

    Clock synchronization with correlated photons · Computation time and feasibility for low-signal scenarios · 0.98

Cites as background 1 paper
  • Such processing algorithms are commonly based on the start-stop method with a summary in histograms or based on a full cross-correlation through Fourier transforms [ref] .

    Clock synchronization with correlated photons · Initialization of the quantum communication session · 0.89

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