Cooperative lamb shift in a mesoscopic atomic array

Z. Meir, O. Schwartz, E. Shahmoon, Dan Oron, R. Ozeri

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

According to quantum electrodynamics, the exchange of virtual photons in a system of identical quantum emitters causes a shift of its energy levels. Such shifts, known as cooperative Lamb shifts, have been studied mostly in the near-field regime. However, the resonant electromagnetic interaction persists also at large distances, providing coherent coupling between distant atoms. Here, we report a direct spectroscopic observation of the cooperative Lamb shift of an optical electric-dipole transition in an array of Sr+ ions suspended in a Paul trap at inter-ion separations much larger than the resonance wavelength. By controlling the precise positions of the ions, we studied the far-field resonant coupling in chains of up to eight ions, extending to a length of 40μm. This method provides a novel tool for experimental exploration of cooperative emission phenomena in extended mesoscopic atomic arrays.

Original languageEnglish
Article number193002
JournalPhysical Review Letters
Volume113
Issue number19
DOIs
Publication statusPublished - Nov 5 2014

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shift
ions
electromagnetic interactions
quantum electrodynamics
electric dipoles
far fields
near fields
emitters
energy levels
traps
causes
photons
wavelengths
atoms

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Cooperative lamb shift in a mesoscopic atomic array. / Meir, Z.; Schwartz, O.; Shahmoon, E.; Oron, Dan; Ozeri, R.

In: Physical Review Letters, Vol. 113, No. 19, 193002, 05.11.2014.

Research output: Contribution to journalArticle

Meir, Z. ; Schwartz, O. ; Shahmoon, E. ; Oron, Dan ; Ozeri, R. / Cooperative lamb shift in a mesoscopic atomic array. In: Physical Review Letters. 2014 ; Vol. 113, No. 19.
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