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Statistical Benchmarking of Scalable Photonic Quantum Systems.

J Tiedau¹, M Engelkemeier¹, B Brecht¹

¹Integrated Quantum Optics Group, Institute for Photonic Quantum Systems (PhoQS), Paderborn University, Warburger Straße 100, 33098 Paderborn, Germany.

Physical Review Letters

|January 29, 2021

Summary

This summary is machine-generated.

Researchers demonstrated a scalable photonic quantum technology framework. This system generates and distributes many photons, verifying high-order nonclassical correlations in complex quantum networks.

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Area of Science:

Quantum optics and photonics
Quantum information science
Experimental quantum physics

Background:

Scalable photonic quantum technologies require generating many photons, distributing them in large networks, and detecting complex quantum correlations.
Understanding macroscopic quantum systems relies on these capabilities.

Purpose of the Study:

To explore the joint operation of key components for scalable photonic quantum technologies.
To benchmark a time-multiplexing framework for generating, distributing, and analyzing multiphoton quantum correlations.
To verify high-order nonclassical correlations in a complex quantum system.

Main Methods:

Utilizing a high-performance source of multiphoton states and a large multiplexing network.
Employing detectors with high photon-number resolution for quantum light distribution and correlation measurement.
Implementing an adaptive approach with flexible time bins for analyzing correlations.

Main Results:

Successfully verified high-order nonclassical correlations of many photons distributed over 64 modes.
Produced and distributed approximately ten photons.
Demonstrated nonclassicality with correlation functions up to the 128th order and high statistical significance.

Conclusions:

The developed time-multiplexing framework is effective for scalable photonic quantum technologies.
The system enables the analysis of complex quantum correlations previously inaccessible by classical means.
This work advances the understanding and application of macroscopic quantum systems.