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Millisecond-Lived Circular Rydberg Atoms in a Room-Temperature Experiment.

H Wu1, R Richaud1, J-M Raimond1

  • 1Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-Université PSL, Sorbonne Université, 11, place Marcelin Berthelot, 75005 Paris, France.

Physical Review Letters
|January 27, 2023
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Summary
This summary is machine-generated.

Researchers achieved millisecond-long lifetimes for circular Rydberg atoms at room temperature. A novel capacitor design suppresses blackbody radiation, enabling new quantum technology applications without cryogenics.

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Area of Science:

  • Quantum physics
  • Atomic physics
  • Quantum technologies

Background:

  • Circular Rydberg states offer large interactions and long lifetimes, crucial for quantum technologies.
  • High-temperature environments, like room temperature, degrade these lifetimes due to blackbody radiation.
  • Current applications often require complex cryogenic setups to maintain state lifetimes.

Purpose of the Study:

  • To demonstrate long lifetimes of circular Rydberg states at room temperature.
  • To overcome the limitations imposed by blackbody radiation at ambient temperatures.
  • To enable practical room-temperature applications of circular Rydberg atoms.

Main Methods:

  • Utilizing laser-cooled atoms with a principal quantum number of 60.
  • Employing a simple plane-parallel capacitor to inhibit blackbody-radiation-induced transfers.
  • Ensuring full optical access through a transparent capacitor electrode.

Main Results:

  • Achieved a circular Rydberg state lifetime exceeding 1 millisecond at room temperature.
  • Demonstrated effective suppression of blackbody radiation effects using the capacitor.
  • Maintained significant optical access to the atoms within the capacitor.

Conclusions:

  • Circular Rydberg states can maintain long lifetimes at room temperature with appropriate shielding.
  • The developed inhibition capacitor technology facilitates room-temperature quantum experiments.
  • This breakthrough opens doors for widespread quantum metrology and simulation applications.