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Quantum Logic Spectroscopy with Ions in Thermal Motion.

D Kienzler1,2, Y Wan1,2, S D Erickson1,2

  • 1National Institute of Standards and Technology, Time and Frequency Division 688, 325 Broadway, Boulder, Colorado 80305, USA.

Physical Review. X
|June 17, 2021
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Summary
This summary is machine-generated.

Researchers demonstrate a novel quantum logic spectroscopy technique using mixed-species trapped ions. This method enhances frequency sensitivity and identifies transitions in challenging atoms and molecules.

Keywords:
Atomic and Molecular PhysicsQuantum Information

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Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Spectroscopy

Background:

  • Quantum logic spectroscopy (QLS) is a powerful technique for probing atomic and molecular properties.
  • Implementing QLS with trapped ions offers high precision but can be limited by factors like temperature sensitivity.

Purpose of the Study:

  • To experimentally realize and validate a mixed-species geometric phase gate for quantum logic spectroscopy.
  • To demonstrate the application of this technique for identifying transitions in intractable systems.
  • To assess the method's temperature sensitivity and frequency sensitivity in multi-ion chains.

Main Methods:

  • Development and experimental implementation of a mixed-species geometric phase gate.
  • Application of the gate for probing transitions in trapped ions.
  • Analysis of temperature and frequency sensitivity in single and multi-ion configurations.

Main Results:

  • Successful experimental realization of the mixed-species geometric phase gate.
  • Demonstrated capability to identify transitions in challenging atomic and molecular systems.
  • Observed reduced temperature sensitivity compared to conventional methods.
  • Achieved quantum-enhanced frequency sensitivity in multi-ion chains.

Conclusions:

  • The mixed-species geometric phase gate is a viable and advantageous technique for quantum logic spectroscopy.
  • This method offers improved performance, including reduced temperature sensitivity and enhanced frequency resolution.
  • Potential applications include advancements in trapped-ion clocks and quantum error correction.