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 language | English |
|---|---|
| Article number | 193002 |
| Journal | Physical Review Letters |
| Volume | 113 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - Nov 5 2014 |
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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 journal › Article
}
TY - JOUR
T1 - Cooperative lamb shift in a mesoscopic atomic array
AU - Meir, Z.
AU - Schwartz, O.
AU - Shahmoon, E.
AU - Oron, Dan
AU - Ozeri, R.
PY - 2014/11/5
Y1 - 2014/11/5
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.113.193002
DO - 10.1103/PhysRevLett.113.193002
M3 - Article
VL - 113
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 19
M1 - 193002
ER -