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

Spectroscopy Letters

Quantum Beat Detection by Photon Statistics Techniques

M. Á. Rebolledo, J. A. Martínez-Betorz

Published Nov 1, 1989• 3 citations
Publisher

Abstract

In this paper we study the usefulness of photon statistics techniques in quantum beat spectroscopy when the intensity of the detected light beam is very small. It is concluded that accurate results can be obtained if the Fourier transform of the time-interval probability is measured.
DOI
10.1080/00387018908054020

Related papers

Level-Crossing Detection By Photon Statistics

M. Á. Rebolledo

In this paper several level-crossing detection techniques based on photon statistics are presented. Results on level-crossing detection through the measurement of the normalized second-order factorial moment n(2)(T) are reviewed. Detection by measurement of the normalized intensity correlation function g(2)(r) or the Laplace transform of time-interval probability is studied. The interest of the above mentioned techniques is analyzed.

Optical Engineering•Oct 1, 1983•15 citations

On the Analysis of Periodic Signals in Spectroscopy by Photon Statistics

M. Á. Rebolledo, Manuel P. Cagigal, Felipe González

There are many experiments in spectroscopy in which some quantity is swept as a linear function of time. For instance, the frequency is swept when a spectrum is recorded, the magnetic field is swept in a level-crossing experiment, etc. If the intensity of the resulting light beam is small the detected signal has a large nose component. One can reduce noise by repeating the experiment periodically and using a multichannel signal analyzer to process the signal and obtain the information contained in it.

Applied Spectroscopy•Jul 1, 1985•6 citations

Quantum Fourier Transform Spectroscopy

Tiemo S. Landes, Amr Tamimi, Jonathan Lavoie +3 more

We outline a technique for quantum Fourier transform spectroscopy, utilizing two-photon interference between time-frequency entangled photon pairs generated via spontaneous parametric down conversion. We implement phase-sensitive detection in the photon-counting regime with a traditional lock-in amplifier and a discrete phase-tagging method.

The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting•Jan 1, 2019•1 citation

Optical activity in the observation of quantum beats in forward scattered light

K. Szymaniec, J. Koperski, S.N. Lea +1 more

The technique of quantum beats in forward scattering remains a useful tool for atomic and molecular spectroscopy. The detected signal is strongly dependent on experimental conditions such as the dichroism and birefringence of external optical elements. We present a theoretical model and its experimental verification to give a physical insight into these effects.

Journal of Physics B Atomic Molecular and Optical Physics•Jul 28, 1995•1 citation

Quantum interferometric two-photon excitation spectroscopy

Yuanyuan Chen, Roberto de J. León‐Montiel, Lixiang Chen

Abstract Two-photon excitation spectroscopy is a nonlinear technique that has gained rapidly in interest and significance for studying the complex energy-level structure and transition probabilities of materials. While the conventional spectroscopy based on tunable classical light has been long established, quantum light provides an alternative way towards excitation spectroscopy with potential advantages in temporal and spectral resolution, as well as reduced photon fluxes. By using a quantum Fourier transform that connects the sum-frequency intensity and N00N-state temporal interference, we present an approach for quantum interferometric two-photon excitation spectroscopy. Our proposed protocol overcomes the difficulties of engineering two-photon joint spectral intensities and fine-tuned absorption-frequency selection. These results may significantly facilitate the use of quantum interferometric spectroscopy for extracting the information about the electronic structure of the two-photon excited-state manifold of atoms or molecules without any requirement for precise and complicated scanning in the spectral domain. This may be particularly relevant for photon-sensitive biological and chemical samples.

arXiv:2111.11950•New Journal of Physics•Oct 27, 2022•11 citations

Determination of the period of a low-intensity square-wave-modulated light beam by measuring a square-wave transform of the time-interval probability

Rafael J. López, M. Á. Rebolledo, Fernando G. Moreno

A photon-statistics technique that is based on the time-interval probability, W(θ), is studied. This technique consists of measuring the transform QR(X)=∫0∞W(θ)R(X,θ)dθ, where R(X, θ) is a square-wave function of frequency X. This function oscillates between one and zero as θ varies. The measurement of QR(X) can be carried out in a simple way. We study the error with which the period of a low-intensity square-wave-modulated light beam can be obtained by fitting a Lorentzian curve to the experimental values of QR(X). It is found that this technique is more accurate than the intensity-correlation technique when the intensity is small. The advantage increases as the intensity of the light beam decreases. This technique can be applied for those experiments in which oscillating-intensity light beams are obtained, the period providing the required information. For instance, it can be used in laser Doppler velocimetry and in quantum-beat spectroscopy.

Journal of the Optical Society of America A•Mar 1, 1986•7 citations
There are many experiments in spectroscopy in which some quantity is swept as a linear function of time. For instance, the frequency is swept when a spectrum is recorded, the magnetic field is swept in a level-crossing experiment, etc. If the intensity of the resulting light beam is small the detected signal has a large nose component. One can reduce noise by repeating the experiment periodically and using a multichannel signal analyzer to process the signal and obtain the information contained in it.
Abstract Two-photon excitation spectroscopy is a nonlinear technique that has gained rapidly in interest and significance for studying the complex energy-level structure and transition probabilities of materials. While the conventional spectroscopy based on tunable classical light has been long established, quantum light provides an alternative way towards excitation spectroscopy with potential advantages in temporal and spectral resolution, as well as reduced photon fluxes. By using a quantum Fourier transform that connects the sum-frequency intensity and N00N-state temporal interference, we present an approach for quantum interferometric two-photon excitation spectroscopy. Our proposed protocol overcomes the difficulties of engineering two-photon joint spectral intensities and fine-tuned absorption-frequency selection. These results may significantly facilitate the use of quantum interferometric spectroscopy for extracting the information about the electronic structure of the two-photon excited-state manifold of atoms or molecules without any requirement for precise and complicated scanning in the spectral domain. This may be particularly relevant for photon-sensitive biological and chemical samples.
A photon-statistics technique that is based on the time-interval probability, W(θ), is studied. This technique consists of measuring the transform QR(X)=∫0∞W(θ)R(X,θ)dθ, where R(X, θ) is a square-wave function of frequency X. This function oscillates between one and zero as θ varies. The measurement of QR(X) can be carried out in a simple way. We study the error with which the period of a low-intensity square-wave-modulated light beam can be obtained by fitting a Lorentzian curve to the experimental values of QR(X). It is found that this technique is more accurate than the intensity-correlation technique when the intensity is small. The advantage increases as the intensity of the light beam decreases. This technique can be applied for those experiments in which oscillating-intensity light beams are obtained, the period providing the required information. For instance, it can be used in laser Doppler velocimetry and in quantum-beat spectroscopy.