Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:1801.09163 · New Journal of Physics

Multiphoton nonclassical light from clusters of single-photon emitters

Luo Qi, Mathieu Manceau, Andrea Cavanna, Fabian Gumpert, Luigi Carbone, Massimo De Vittorio, Alberto Bramati, E. Giacobino, Lukáš Lachman, Radim Filip, Maria V. Chekhova

Published Jun 26, 2018• 24 citations
arXivHTMLPDF

Abstract

We study nonclassical features of multiphoton light emitted by clusters of single-photon emitters. As signatures of nonclassicality, we use violation of inequalities for normalized correlation functions of different orders or the probabilities of multiphoton detection. In particular, for clusters of 2–14 colloidal CdSe/CdS dot-in-rods we observe antibunching and nonclassicality of up to the fourth-order. Surprisingly, violation of certain classical inequalities gets even more pronounced for larger clusters.

DOI
10.1088/1367-2630/aacf21

Related papers

Higher-order nonclassicality for clusters of single-photon emitters

Qi Luo, Mathieu Manceau, Andrea Cavanna +6 more

We consider nonclassical features of light emitted by clusters of room-temperature single-photon emitters. As signatures of nonclassicality, we discuss violation of inequalities for normalized correlation functions of orders higher than two. These conditions are stronger than higher-order antibunching, i.e., higher-order normalized correlation functions being less than unity. In experiment, we observe third-order nonclassicality as well as second-, third-, and fourth-order antibunching for clusters of 1 to 20 colloidal CdSe/CdS dot-in-rods.

•Jan 28, 2018•1 citation

Non-classical multi-photon light from clusters of colloidal quantum dots

Qi Luo

In this thesis, an experiment for testing the non-classicality of the light emitted by CdSe/CdS clusters is described. Different criteria are used, which are sufficient conditions for the non-classicality. They are based on the measurement of normalized Glauber’s correlation functions of different orders or multi-photon probabilities using the Hanbury Brown–Twiss (HBT) setup. After measuring the light emitted by CdSe/CdS clusters consisting of different numbers of quantum dots, the non-classicality of their emission has been verified with using the criteria mentioned above. In particular, the fourth-order anti-bunching and the non-classicality witnessed by the Klyshko criteria of the third-order have been observed in this experiment, which have never been reported on a triggered multi-photon source before, to the best of my knowledge. In this thesis, an experiment of calibrating the QE of the intensified CCD (ICCD) camera in the single-photon detection regime with using Klyshko’s absolute method has been described. Different groups of pixels in the same camera have been used as both the reference and calibrated detectors, and therefore this is an autonomous absolute calibration. The QE of the ICCD camera as a function of the threshold value, as well as the wavelength dependence of the QE at a chosen threshold value, have been measured. The QE value in the single-photon regime is much lower than the one of the photocathode of the camera. To the best of my knowledge, this is the first experiment to calibrate the QE of an ICCD camera in the single-photon regime. The experimental results reported in this thesis are useful in the field of non-classical multi-photon sources as well as the field of multiplexed single-photon detection techniques.

•Jan 1, 2019•0 citations

Photon correlations for colloidal nanocrystals and their clusters

O. A. Shcherbina, G. A. Shcherbina, Mathieu Manceau +7 more

Images of semiconductor "dot-in-rods" and their small clusters are studied by measuring the second-order correlation function with a spatially resolving intensified CCD camera. This measurement allows one to distinguish between a single dot and a cluster and, to a certain extent, to estimate the number of dots in a cluster. A more advanced measurement is proposed, based on higher-order correlations, enabling more accurate determination of the number of dots in a small cluster. Nonclassical features of the light emitted by such a cluster are analyzed.

arXiv:1312.5217•Optics Letters•Mar 17, 2014•21 citations

Photon correlations for colloidal nanocrystals and their clusters

O. A. Shcherbina, G. A. Shcherbina, Mathieu Manceau +7 more

Images of semiconductor "dot-in-rods" and their small clusters are studied by measuring the second-order correlation function with a spatially resolving intensified CCD camera. This measurement allows one to distinguish between a single dot and a cluster and, to a certain extent, to estimate the number of dots in a cluster. A more advanced measurement is proposed, based on higher-order correlations, enabling more accurate determination of the number of dots in a small cluster. Nonclassical features of the light emitted by such a cluster are analyzed.

•Jan 1, 2013•10 citations

Photon antibunching in single CdSe/ZnS quantum dot fluorescence

Brahim Lounis, Hans A. Bechtel, Daniele Gerion +2 more

We investigate the fluorescence intensity correlation function of a single CdSe quantum dot (QD) using a start–stop experiment. We observe strong photon antibunching, a signature of non-classical light emission, over a large range of intensities (0.1–100kW/cm2). The lack of coincidence at zero time delay indicates a highly efficient Auger ionization process, which suppresses multi-photon emission in these colloidal QDs. Using careful analysis of the saturation behavior of the coincidence histograms, the absorption cross-section of a single QD has also been derived.

Chemical Physics Letters•Oct 1, 2000•339 citations

Detection-device-independent verification of nonclassical light

Bohmann, M., Qi, L., Vogel, W. +1 more

The efficient certification of nonclassical effects of light forms the basis for applications in optical quantum technologies. We derive general correlation conditions for the verification of nonclassical light based on multiplexed detection. The obtained nonclassicality criteria are valid for imperfectly balanced multiplexing scenarios with on-off detectors and do not require any knowledge about the detector system. In this sense, they are fully independent of the detector system. In our experiment, we study light emitted by clusters of single-photon emitters, whose photon number may exceed the number of detection channels. Even under such conditions, our criteria certify nonclassicality with high statistical significance.

•Dec 16, 2019•9 citations
We study nonclassical features of multiphoton light emitted by clusters of single-photon emitters. As signatures of nonclassicality, we use violation of inequalities for normalized correlation functions of different orders or the probabilities of multiphoton detection. In particular, for clusters of 2–14 colloidal CdSe/CdS dot-in-rods we observe antibunching and nonclassicality of up to the fourth-order. Surprisingly, violation of certain classical inequalities gets even more pronounced for larger clusters.
We consider nonclassical features of light emitted by clusters of room-temperature single-photon emitters. As signatures of nonclassicality, we discuss violation of inequalities for normalized correlation functions of orders higher than two. These conditions are stronger than higher-order antibunching, i.e., higher-order normalized correlation functions being less than unity. In experiment, we observe third-order nonclassicality as well as second-, third-, and fourth-order antibunching for clusters of 1 to 20 colloidal CdSe/CdS dot-in-rods.
In this thesis, an experiment for testing the non-classicality of the light emitted by CdSe/CdS clusters is described. Different criteria are used, which are sufficient conditions for the non-classicality. They are based on the measurement of normalized Glauber’s correlation functions of different orders or multi-photon probabilities using the Hanbury Brown–Twiss (HBT) setup. After measuring the light emitted by CdSe/CdS clusters consisting of different numbers of quantum dots, the non-classicality of their emission has been verified with using the criteria mentioned above. In particular, the fourth-order anti-bunching and the non-classicality witnessed by the Klyshko criteria of the third-order have been observed in this experiment, which have never been reported on a triggered multi-photon source before, to the best of my knowledge. In this thesis, an experiment of calibrating the QE of the intensified CCD (ICCD) camera in the single-photon detection regime with using Klyshko’s absolute method has been described. Different groups of pixels in the same camera have been used as both the reference and calibrated detectors, and therefore this is an autonomous absolute calibration. The QE of the ICCD camera as a function of the threshold value, as well as the wavelength dependence of the QE at a chosen threshold value, have been measured. The QE value in the single-photon regime is much lower than the one of the photocathode of the camera. To the best of my knowledge, this is the first experiment to calibrate the QE of an ICCD camera in the single-photon regime. The experimental results reported in this thesis are useful in the field of non-classical multi-photon sources as well as the field of multiplexed single-photon detection techniques.
Images of semiconductor "dot-in-rods" and their small clusters are studied by measuring the second-order correlation function with a spatially resolving intensified CCD camera. This measurement allows one to distinguish between a single dot and a cluster and, to a certain extent, to estimate the number of dots in a cluster. A more advanced measurement is proposed, based on higher-order correlations, enabling more accurate determination of the number of dots in a small cluster. Nonclassical features of the light emitted by such a cluster are analyzed.
Images of semiconductor "dot-in-rods" and their small clusters are studied by measuring the second-order correlation function with a spatially resolving intensified CCD camera. This measurement allows one to distinguish between a single dot and a cluster and, to a certain extent, to estimate the number of dots in a cluster. A more advanced measurement is proposed, based on higher-order correlations, enabling more accurate determination of the number of dots in a small cluster. Nonclassical features of the light emitted by such a cluster are analyzed.
We investigate the fluorescence intensity correlation function of a single CdSe quantum dot (QD) using a start–stop experiment. We observe strong photon antibunching, a signature of non-classical light emission, over a large range of intensities (0.1–100kW/cm2). The lack of coincidence at zero time delay indicates a highly efficient Auger ionization process, which suppresses multi-photon emission in these colloidal QDs. Using careful analysis of the saturation behavior of the coincidence histograms, the absorption cross-section of a single QD has also been derived.
The efficient certification of nonclassical effects of light forms the basis for applications in optical quantum technologies. We derive general correlation conditions for the verification of nonclassical light based on multiplexed detection. The obtained nonclassicality criteria are valid for imperfectly balanced multiplexing scenarios with on-off detectors and do not require any knowledge about the detector system. In this sense, they are fully independent of the detector system. In our experiment, we study light emitted by clusters of single-photon emitters, whose photon number may exceed the number of detection channels. Even under such conditions, our criteria certify nonclassicality with high statistical significance.