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Atomic Spectroscopy: Effects of Temperature01:27

Atomic Spectroscopy: Effects of Temperature

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Atomization, converting samples into gas-phase atoms and ions, is essential for atomic spectroscopy. The flame temperature required for atomization affects the efficiency of the atomic spectroscopic methods by increasing the atomization efficiency and the relative population of the excited and ground states.
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A robust fiber-based quantum thermometer coupled with nitrogen-vacancy centers.

Shao-Chun Zhang1, Yang Dong1, Bo Du1

  • 1CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, People's Republic of China.

The Review of Scientific Instruments
|July 10, 2021
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Summary

We developed a fiber-based quantum thermometer using nitrogen-vacancy centers in diamond. This robust sensor achieves high temperature sensitivity, enabling precise surface imaging of electronic chips in challenging environments.

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Area of Science:

  • Quantum sensing
  • Diamond quantum technologies
  • Nanoscale thermometry

Background:

  • Nitrogen-vacancy (NV) centers in diamond are sensitive quantum sensors.
  • Isolating specific physical quantities from environmental disturbances is challenging in practical applications.

Purpose of the Study:

  • To develop a fiber-based quantum thermometer for accurate temperature sensing.
  • To isolate temperature measurements from magnetic field and microwave power fluctuations.
  • To demonstrate surface temperature imaging of electronic chips.

Main Methods:

  • Utilizing a high-density nitrogen-vacancy ensemble in diamond.
  • Tracking the sharp-dip in the zero-field optically detected magnetic resonance (ODMR) spectrum.
  • Implementing a fiber-based system for robust and compatible measurements.

Main Results:

  • Achieved significant isolation from magnetic field and microwave power drift.
  • Demonstrated improved temperature sensitivity.
  • Successfully performed surface temperature imaging of an electronic chip with 18mK/Hz sensitivity.

Conclusions:

  • The fiber-based quantum thermometer offers a simple, robust, and compatible solution for high-sensitivity temperature measurements.
  • This technology is suitable for applications in ambiguous environments, such as electronic chip surface imaging.
  • Paves the way for advanced nanoscale thermometry and quantum sensing applications.