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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Franson Interference Generated by a Two-Level System.

M Peiris1, K Konthasinghe1, A Muller1

  • 1Physics Department, University of South Florida, Tampa, Florida 33620, USA.

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Summary
This summary is machine-generated.

Researchers demonstrated Franson interferometry using quantum dots to generate single correlated photon pairs. This method achieved 66% visibility, exceeding classical limits and approaching Bell

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Area of Science:

  • Quantum optics
  • Solid-state physics
  • Quantum information science

Background:

  • Franson interferometry tests fundamental quantum mechanics.
  • Correlated photon pairs are crucial for quantum information processing.
  • Semiconductor quantum dots offer a promising platform for generating quantum light sources.

Purpose of the Study:

  • To perform Franson interferometry using correlated photon pairs from a quantum dot.
  • To investigate a novel method for generating single correlated photon pairs.
  • To test the violation of Bell's inequalities using this quantum dot-based source.

Main Methods:

  • Utilizing frequency-filtered scattered light from a near-resonantly driven two-level semiconductor quantum dot.
  • Generating single pairs of correlated photons.
  • Performing Franson interferometry measurements.

Main Results:

  • Achieved a Franson visibility of 66%.
  • Demonstrated a method distinct from spontaneous parametric down-conversion and four-wave mixing.
  • Exceeded the classical limit of 50% visibility, approaching the violation limit of Bell's inequalities (70.7%).

Conclusions:

  • Semiconductor quantum dots can serve as a viable source for Franson interferometry.
  • The demonstrated technique offers a pathway to generate single correlated photon pairs for quantum experiments.
  • The high visibility achieved indicates strong quantum correlations and potential for Bell inequality violation studies.