Tunneling-Induced Spectral Broadening of a Single Atom in a Three-Dimensional Optical Lattice

We have investigated the spectral broadening in the near-resonance fluorescence spectrum of a single rubidium atom trapped in a three-dimensional (3D) optical lattice in a strong Lamb-Dicke regime. Besides the strong Rayleigh peak, the spectrum exhibited weak Stokes and anti-Stokes Raman sidebands....

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Veröffentlicht in:	Nano letters 2011-02, Vol.11 (2), p.729-733
Hauptverfasser:	Kim, Wookrae, Park, Changwon, Kim, Jung-Ryul, Choi, Youngwoon, Kang, Sungsam, Lim, Sooin, Lee, Yea-Lee, Ihm, Jisoon, An, Kyungwon
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Electron Transport Equipment Design Equipment Failure Analysis Exact sciences and technology Lattice dynamics Phonons in low-dimensional structures and small particles Physics Semiconductors
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Beschreibung
Zusammenfassung:	We have investigated the spectral broadening in the near-resonance fluorescence spectrum of a single rubidium atom trapped in a three-dimensional (3D) optical lattice in a strong Lamb-Dicke regime. Besides the strong Rayleigh peak, the spectrum exhibited weak Stokes and anti-Stokes Raman sidebands. The line width of the Rayleigh peak for low potential depths was well explained by matter-wave tunneling between the first-two lowest vibrational states of 3D anisotropic harmonic potentials of adjacent local minima of the optical lattice.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl103858x