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Large-scale optical characterization of solid-state quantum emitters.

Madison Sutula1, Ian Christen2, Eric Bersin2,3

  • 1Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA. mmsutula@mit.edu.

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|August 21, 2023
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Summary
This summary is machine-generated.

Researchers developed new spectroscopic techniques for efficient, large-scale characterization of solid-state quantum emitters. These automated methods accelerate the identification of quantum memory devices for quantum networking applications.

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Area of Science:

  • Quantum Information Science
  • Materials Science
  • Optics and Photonics

Background:

  • Solid-state quantum emitters are crucial for quantum memory and networking.
  • Current optical characterization methods are inefficient and not scalable.
  • Need for advanced techniques to identify and utilize quantum emitters effectively.

Purpose of the Study:

  • To introduce and demonstrate novel spectroscopic techniques for large-scale, automated characterization of color centers.
  • To enable systematic tracking and comparison of quantum emitter sites across experiments.
  • To accelerate the identification and development of quantum emitters for various applications.

Main Methods:

  • Development of a machine-readable global coordinate system for precise emitter tracking.
  • Implementation of widefield cryogenic microscopy with resonant photoluminescence excitation for parallel spectroscopy.
  • Demonstration of automated chip-scale characterization at room temperature, covering thousands of fields of view.

Main Results:

  • Achieved a two-orders-of-magnitude speed-up in resonant spectroscopy compared to confocal microscopy.
  • Successfully demonstrated automated, chip-scale characterization of quantum emitters and devices.
  • Established a systematic method for comparing the same quantum emitter sites over multiple experiments.

Conclusions:

  • The developed spectroscopic techniques enable efficient, large-scale, and automated characterization of solid-state quantum emitters.
  • These tools are vital for accelerating the discovery of high-quality quantum emitters for quantum information applications.
  • The methods will significantly advance materials science, device design, and characterization in quantum technologies.