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

Quantum Electronics and Laser Science Conference

Experimental study of the momentum correlation of a pseudo-thermal field in the photon counting regime

Giuliano Scarcelli, Alejandra Valencia, Yanhua H. Shih

Published Dec 10, 2005• 2 citations
Publisher

Abstract

Thermal radiation has been recently proposed for imaging and interference experiments to simulate entangled state. We report an experimental study on the momentum correlation properties of a pseudo-thermal field in the photon counting regime.
DOI
10.1109/qels.2005.1549057

Related papers

Experimental study of the momentum correlation of a pseudothermal field in the photon-counting regime

Giuliano Scarcelli, Alejandra Valencia, Yanhua H. Shih

Thermal (or pseudothermal) radiation has been recently proposed for imaging and interference types of experiments to simulate entangled states. We report an experimental study on the momentum correlation properties of a pseudothermal field in the photon counting regime. The characterization and understanding of such a light source in the context of two-photon physics, especially its similarities and differences compared to entangled two-photon states, is useful in gaining knowledge of entanglement and may help us to assess the real potential of applications of chaotic light in this context.

arXiv:quant-ph/0409210•Physical Review A•Nov 12, 2004•68 citations

Two-photon Anti-correlation and Interference with Incoherent Thermal Radiations

Hui Chen, Tao Peng, Sanjit Karmakar +1 more

We successfully simulate the behavior of entangled states by multi-photon interference of thermal light. Experimentally, we observed anti-correlation and polarization correlation with more than 71% visibility. The experiment is theoretically analyzed and formulated with quantum mechanics theory.

Frontiers in Optics•Jan 1, 2011•0 citations

Third-order correlation function and ghost imaging of chaotic thermal light in the photon counting regime

Yu Zhou, Jason Simon, Jianbin Liu +1 more

In a near-field three-photon correlation measurement, we observed the third-order temporal and spatial correlation functions of chaotic thermal light in the single-photon counting regime. In the study, we found that the probability of jointly detecting three randomly radiated photons from a chaotic thermal source by three individual detectors is $6$ times greater if the photodetection events fall in the coherence time and coherence area of the radiation field than if they do not. From the viewpoint of quantum mechanics, the observed phenomenon is the result of three-photon interference. By making use of this property, we measured the three-photon thermal light lensless ghost image of a double spot and achieved higher visibility compared with the two-photon thermal light ghost image.

Physical Review A•Apr 26, 2010•71 citations

Experimental controlled-NOT gate simulation with thermal light

Tao Peng, Vincenzo Tamma, Yanhua H. Shih

We report a recent experimental simulation of a controlled-NOT gate operation based on polarization correlation measurements of thermal fields in photon-number fluctuations. The interference between pairs of correlated paths at the very heart of these experiments has the potential for the simulation of correlations between a larger number of qubits.

Scientific Reports•Jul 21, 2016•10 citations

Fourth-Order Spatial Correlation of Thermal Light

Feng Wen, Xun Zhang, Xinxin Xue +3 more

We investigate the fourth-order spatial correlation properties of pseudo-thermal light in the photon counting regime, and apply the Klyshko advanced-wave picture to describe the process of four-photon coincidence counting measurement. We deduce the theory of a proof-of-principle four-photon coincidence counting configuration, and find that if the four randomly radiated photons come from the same radiation area and are indistinguishable in principle, the fourth-order correlation of them is 24 times larger than that when four photons come from different radiation areas. In addition, we also show that the higher-order spatial correlation function can be decomposed into multiple lower-order correlation functions, and the contrast and visibility of low-order correlation peaks are less than those of higher orders, while the resolutions all are identical. This study may be useful for better understanding the four-photon interference and multi-channel correlation imaging.

Chinese Physics Letters•Nov 1, 2014•4 citations

Bell correlation of thermal fields in photon-number fluctuations

Tao Peng, Yanhua H. Shih

We wish to report a recent experimental observation of the Bell correlation from the polarization measurement of thermal fields in photon-number fluctuations, indicating the successful simulation of a Bell state. The same mechanism can be applied for the simulation of a multi-photon GHZ state and N -qubits for N ≫ 2.

Europhysics Letters (EPL)•Dec 1, 2015•5 citations
Thermal (or pseudothermal) radiation has been recently proposed for imaging and interference types of experiments to simulate entangled states. We report an experimental study on the momentum correlation properties of a pseudothermal field in the photon counting regime. The characterization and understanding of such a light source in the context of two-photon physics, especially its similarities and differences compared to entangled two-photon states, is useful in gaining knowledge of entanglement and may help us to assess the real potential of applications of chaotic light in this context.
In a near-field three-photon correlation measurement, we observed the third-order temporal and spatial correlation functions of chaotic thermal light in the single-photon counting regime. In the study, we found that the probability of jointly detecting three randomly radiated photons from a chaotic thermal source by three individual detectors is 666 times greater if the photodetection events fall in the coherence time and coherence area of the radiation field than if they do not. From the viewpoint of quantum mechanics, the observed phenomenon is the result of three-photon interference. By making use of this property, we measured the three-photon thermal light lensless ghost image of a double spot and achieved higher visibility compared with the two-photon thermal light ghost image.
We investigate the fourth-order spatial correlation properties of pseudo-thermal light in the photon counting regime, and apply the Klyshko advanced-wave picture to describe the process of four-photon coincidence counting measurement. We deduce the theory of a proof-of-principle four-photon coincidence counting configuration, and find that if the four randomly radiated photons come from the same radiation area and are indistinguishable in principle, the fourth-order correlation of them is 24 times larger than that when four photons come from different radiation areas. In addition, we also show that the higher-order spatial correlation function can be decomposed into multiple lower-order correlation functions, and the contrast and visibility of low-order correlation peaks are less than those of higher orders, while the resolutions all are identical. This study may be useful for better understanding the four-photon interference and multi-channel correlation imaging.