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  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper QWH2

Observation of superradiant and subradiant spontaneous emission of two trapped ions

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Abstract

We report1 a laboratory realization of the gedanken experiment that Dicke used to introduce superradiance,2 Two Ba138+ ions are laser-cooled and crystallized in a microscopic Paul trap so that they come to rest ≃ 1.5 microns from each other. This is about 3 wavelengths λ of the 493 run light used to laser cool the 62P1/2 to 62S1/2 transition. Micromotion and residual thermal motion are less than λ/2π so that the ions are essentially stationary relative to 493 nm light. At these distances the spontaneous emission rate of one atom is affected by the presence of the other.

© 1996 Optical Society of America

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