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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Published on: June 8, 2018

Quantum-optical coherence tomography with collinear entangled photons.

Dorilian Lopez-Mago1, Lukas Novotny

  • 1Institute of Optics, University of Rochester, Rochester, New York 14627, USA.

Optics Letters
|October 3, 2012
PubMed
Summary

This study introduces a new quantum-optical coherence tomography (QOCT) method using collinear entangled photons. This simplified approach overcomes limitations of previous noncollinear designs, offering enhanced robustness and adaptability for advanced imaging.

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Area of Science:

  • Quantum optics
  • Optical coherence tomography
  • Photon entanglement

Background:

  • Classical optical coherence tomography (OCT) is a widely used imaging technique.
  • Quantum-optical coherence tomography (QOCT) enhances OCT using entangled photon pairs.
  • Standard QOCT configurations, like the Hong-Ou-Mandel interferometer, use noncollinear photon paths, leading to practical limitations such as misalignment and low signal-to-noise ratios.

Purpose of the Study:

  • To introduce and implement a novel QOCT configuration.
  • To overcome the limitations of traditional noncollinear QOCT methods.
  • To leverage collinear entangled photons for improved QOCT performance.

Main Methods:

  • Development of a QOCT system utilizing collinear entangled photons.
  • Implementation of a two-photon Michelson interferometer.
  • Comparison with standard noncollinear QOCT configurations.

Main Results:

  • Successful implementation of collinear QOCT.
  • Demonstration of advantages including simplicity and robustness compared to noncollinear methods.
  • Improved signal-to-noise and reduced susceptibility to misalignment.

Conclusions:

  • Collinear QOCT offers a simplified and more robust alternative to existing noncollinear designs.
  • The proposed method is adaptable for various advanced imaging applications.
  • This advancement paves the way for more practical and efficient quantum-enhanced imaging.