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Tomography by noise.

G Harder1, D Mogilevtsev2, N Korolkova3

  • 1Applied Physics, University of Paderborn, Warburgerstrasse 100, 33098 Paderborn, Germany.

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|August 30, 2014
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Summary
This summary is machine-generated.

We developed a new quantum diagnostics tool that uses thermal noise to efficiently reconstruct photon number distributions with minimal equipment. This method is robust against experimental imperfections, offering a user-friendly approach to quantum state analysis.

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Area of Science:

  • Quantum optics
  • Quantum information science

Background:

  • Characterizing quantum states is crucial for quantum technologies.
  • Existing methods often require complex setups or numerous devices.

Purpose of the Study:

  • To present an efficient and robust method for reconstructing photon number distributions.
  • To utilize thermal noise as a sole probe for quantum state characterization.

Main Methods:

  • Employing a minimal number of precalibrated quantum devices, specifically one on-off single-photon detector.
  • Using thermal noise as the probing mechanism for state reconstruction.

Main Results:

  • Successfully demonstrated the experimental inference of single-photon, thermal, and two-photon states.
  • The method proved stable against experimental imperfections.

Conclusions:

  • The developed method offers a direct and user-friendly quantum diagnostics tool.
  • This approach simplifies the characterization of quantum states, advancing quantum technology development.