Feasibility study towards comparison of the <i>g</i> <sup>(2)</sup>(0) measurement in the visible range

Traina, P.; Kirkwood, Robert A.; López, Marco; Brida, G.; Gramegna, Marco; Berchera, I. Ruo; Forneris, J.; Tchernij, S. Ditalia; Olivero, P.; Chunnilall, Christopher J.; Kück, S.; Degiovanni, I. P.

doi:10.1088/1681-7575/aaf6c8

Cited by 8 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second order correlation function 𝑔 (2) (𝜏 = 0) is used to characterise the probability of more than one photon per pulse. In [65], a well-designed measurement system is used to measure the second order correlation function 𝑔 (2) (0) by exploiting the equivalence between 𝑔 (2) (𝜏 = 0) and the 𝛼 parameter which is measurable by conducting Hanbury Brown and Twiss interferometer (HBT) experiment. The measurement model also considers minimising the impact from accidental jitter of SPD and recording electronics, and the backflash.…”

Section: Metrology Of Qkd Sourcementioning

confidence: 99%

Metrology Challenges in Quantum Key Distribution

Gui

Unnikrishnan

Stanley

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The metrology of the QKD devices and systems grows increasingly important in recent years not only because of the needs for conformance and performance testing in the standardization, but more importantly, imperfect implementation of the devices and systems or deviations from the theoretical models, which could be exploited by eavesdropper, should be carefully characterised to avoid the so-called side channel attack. In this paper, we review the recent advances in many aspects of the QKD metrology in both fibre based QKD and free space QKD systems, including a cutting edge metrology facility development and application, traceable calibration methods, and practical device characterising technologies, all of which have been contributed by the metrology communities and relative institutions.

show abstract

Section: Metrology Of Qkd Sourcementioning

confidence: 99%

Metrology Challenges in Quantum Key Distribution

Gui

Unnikrishnan

Stanley

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…The normalized higher-order moments have the potential of becoming important in quantum optical metrology [43,44]. However, experimental imperfections can introduce artifacts in the observed values [45,46] and therefore a careful analysis of the measurement arrangement is necessary [47] in order to validate the initial assumptions made.…”

Section: Measurement Of the Normalized Higher-order Moments In Discre...mentioning

confidence: 99%

Measuring higher-order photon correlations of faint quantum light: a short review

Laiho,

Dirmeier,

Schmidt

et al. 2021

Preprint

View full text Add to dashboard Cite

Normalized correlation functions provide expedient means for determining the photon-number properties of light. These higher-order moments, also called the normalized factorial moments of photon number, can be utilized both in the fast state classification and in-depth state characterization. Further, non-classicality criteria have been derived based on their properties. Luckily, the measurement of the normalized higher-order moments is often loss-independent making their observation with lossy optical setups and imperfect detectors experimentally appealing. The normalized higher-order moments can for example be extracted from the photon-number distribution measured with a true photon-number-resolving detector or accessed directly via manifold coincidence counting in the spirit of the Hanbury Brown and Twiss experiment. Alternatively, they can be inferred via homodyne detection. Here, we provide an overview of different kind of state classification and characterization tasks that take use of normalized higher-order moments and consider different aspects in measuring them with free-traveling light.

show abstract

“…An analogous effort has been addressed to establish a proper procedure for the measurement of the g (2) function of a single-emitter pulsed SPS (based on nitrogen vacancies in diamonds emitting in the visible range); the related results can be found in [47].…”

Section: Introductionmentioning

confidence: 99%

Towards a standard procedure for the measurement of the multi-photon component in a CW telecom heralded single-photon source

et al. 2019

Self Cite

View full text Add to dashboard Cite

Single-photon sources are set to be a fundamental tool for metrological applications as well as for quantum information related technologies. Because of their upcoming widespread dissemination, the need for their characterization and standardization is becoming of the utmost relevance. Here, we illustrate a strategy to provide a quantitative estimate of the multi-photon component of a single-photon source, showing the results achieved in a pilot study for the measurement of the second order autocorrelation function g (2) of a low-noise CW heralded single photon source prototype (operating at telecom wavelength λ = 1550 nm) realized in INRiM. The results of this pilot study, involving PTB, NPL and INRiM, will help to build up a robust and unambiguous procedure for the characterization of the emission of a single-photon source.

show abstract

Feasibility study towards comparison of the g ⁽²⁾(0) measurement in the visible range

Cited by 8 publications

References 43 publications

Metrology Challenges in Quantum Key Distribution

Metrology Challenges in Quantum Key Distribution

Measuring higher-order photon correlations of faint quantum light: a short review

Towards a standard procedure for the measurement of the multi-photon component in a CW telecom heralded single-photon source

Contact Info

Product

Resources

About

Feasibility study towards comparison of the g (2)(0) measurement in the visible range

Cited by 8 publications

References 43 publications

Metrology Challenges in Quantum Key Distribution

Metrology Challenges in Quantum Key Distribution

Measuring higher-order photon correlations of faint quantum light: a short review

Towards a standard procedure for the measurement of the multi-photon component in a CW telecom heralded single-photon source

Contact Info

Product

Resources

About

Feasibility study towards comparison of the g ⁽²⁾(0) measurement in the visible range