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Related Experiment Video

Updated: May 25, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Photon correlation in single-photon frequency upconversion.

Xiaorong Gu¹, Kun Huang, Haifeng Pan

¹State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China, 200062.

|February 15, 2012

Summary

This summary is machine-generated.

This study shows that upconverted photons are one-to-one from signal photons in frequency upconversion. The intensity cross-correlation function remains unity, confirming signal photon properties are maintained.

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High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

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Published on: June 28, 2016

Area of Science:

Quantum optics
Photonics
Nonlinear optics

Background:

Single-photon frequency upconversion is crucial for quantum information processing.
Maintaining signal photon properties during upconversion is essential for quantum applications.
Multi-longitudinal mode sources present unique challenges and opportunities in frequency conversion.

Purpose of the Study:

To experimentally investigate intensity cross-correlation in single-photon frequency upconversion with multi-longitudinal mode sources.
To theoretically analyze the preservation of signal photon properties under multi-longitudinal mode pumping and signaling.
To validate theoretical predictions with experimental results on photon correlation and upconversion efficiency.

Main Methods:

Experimental setup utilizing multi-longitudinal mode pump and signal sources for frequency upconversion.
Measurement of joint probability for simultaneous detection of upconverted and unconverted photons.
Calculation of intensity cross-correlation function g(2)(0) at varying conversion efficiencies.
Theoretical analysis of photon properties in multi-longitudinal mode upconversion systems.

Main Results:

Achieved a conversion efficiency of 80.5%.
Observed anti-correlation between upconverted and unconverted photons, indicating a one-to-one conversion.
Demonstrated intensity cross-correlation function g(2)(0) equal to unity, irrespective of conversion efficiency.
Confirmed theoretical prediction of maintained signal photon properties.

Conclusions:

The study confirms the one-to-one mapping of signal photons to upconverted photons in a multi-longitudinal mode frequency upconversion process.
Signal photon properties are preserved, as evidenced by the g(2)(0) = 1 result.
This research supports advancements in high-speed, wavelength-tunable quantum state translation and photonic quantum interfaces.