Quadrupole Raman transitions in ultracold $^{87}$ Rb driven by optical vortex beamsQuadrupole Raman transitions in ultracold $^{87}$Rb driven by optical vortex beams

Joseph D. Murphree, Maitreyi Jayaseelan, Zekai Chen +2 more

Bulletin of the American Physical SocietyMay 30, 20190 citations

Probabilities for electric quadrupole transitions between Rydberg states of atoms and ions

V A Davydkin, A. Yu. Makarenko

Optics and SpectroscopySep 1, 19824 citations

Molecular Spectra in an Ultracold Strontium Rydberg Gas

J. D. Whalen, Francisco Camargo, Roger Ding +3 more

Bulletin of the American Physical SocietyMay 27, 20160 citations

Observation of electric quadrupole transitions to Rydberg nd states of ultracold rubidium atoms

D. Tong, S. M. Farooqi, E. G. M. van Kempen +5 more

We report the observation of dipole-forbidden, but quadrupole-allowed, one-photon transitions to high-Rydberg states in Rb. Using pulsed uv excitation of ultracold atoms in a magneto-optical trap, we excite $5s\ensuremath{\rightarrow}nd$ transitions over a range of principal quantum numbers $n=27--59$ . Compared to dipole-allowed (E1) transitions from $5s\ensuremath{\rightarrow}np$, these E2 transitions are weaker by a factor of approximately 2000. We also report measurements of the anomalous $n{p}_{3/2}:n{p}_{1/2}$ fine-structure transition strength ratio for $n=28--75$ . Both results are in agreement with theoretical predictions.We report the observation of dipole-forbidden, but quadrupole-allowed, one-photon transitions to high-Rydberg states in Rb. Using pulsed uv excitation of ultracold atoms in a magneto-optical trap, we excite $5s\ensuremath{\rightarrow}nd$ transitions over a range of principal quantum numbers $n=27--59$. Compared to dipole-allowed (E1) transitions from $5s\ensuremath{\rightarrow}np$, these E2 transitions are weaker by a factor of approximately 2000. We also report measurements of the anomalous $n{p}_{3/2}:n{p}_{1/2}$ fine-structure transition strength ratio for $n=28--75$. Both results are in agreement with theoretical predictions.

arXiv:0809.2341Physical Review AMay 15, 200937 citations

An ultracold gas of Rydberg atoms [Poster]

M. Reetz‐Lamour, Thomas Amthor, Johannes Deiglmayr +2 more

Jan 1, 20050 citations

Long-Range Interactions in an Ultracold Rubidium Rydberg Gas

D. Tong

New phenomena have been observed by exciting ultracold ground-state atoms to Rydberg states. Starting with a dense sample of Rb atoms in a magneto-optical trap, we excite them to high Rydberg states (n = 30 - 90) with a single UV excitation pulse. Long-range molecular resonances with interatomic distances exceeding 104 a0 have been discovered. We have also observed the Rydberg excitation blockade, crucial for the implementation of quantum phase gates using neutral atoms. The physics behind these observations is attributed to the strong long-range van der Waals interactions among the Rydberg atoms. In addition, we have seen dipole (E1) forbidden but quadrupole (E2) allowed 5s → nd transitions, allowing us to determine the E2 oscillator strengths to these high Rydberg states. Our narrow-band UV pulsed laser system, with ∼100 MHz bandwidth, also allows us to measure the ratios of j-dependent oscillator strengths to the p and d Rydberg states. ^New phenomena have been observed by exciting ultracold ground-state atoms to Rydberg states. Starting with a dense sample of Rb atoms in a magneto-optical trap, we excite them to high Rydberg states (n = 30 - 90) with a single UV excitation pulse. Long-range molecular resonances with interatomic distances exceeding 104 a0 have been discovered. We have also observed the Rydberg excitation blockade, crucial for the implementation of quantum phase gates using neutral atoms. The physics behind these observations is attributed to the strong long-range van der Waals interactions among the Rydberg atoms. In addition, we have seen dipole (E1) forbidden but quadrupole (E2) allowed 5s → nd transitions, allowing us to determine the E2 oscillator strengths to these high Rydberg states. Our narrow-band UV pulsed laser system, with ∼100 MHz bandwidth, also allows us to measure the ratios of j-dependent oscillator strengths to the p and d Rydberg states. ^

Jan 1, 20100 citations

Quadrupole Transitions to Rydberg States in an Ultracold

^{85}

Rb Gas

Quadrupole Raman transitions in ultracold

^{87}

Rb driven by optical vortex beams

n=27--59

. Compared to dipole-allowed (E1) transitions from $5s\ensuremath{\rightarrow}np$, these E2 transitions are weaker by a factor of approximately 2000. We also report measurements of the anomalous

n{p}_{3/2}:n{p}_{1/2}

fine-structure transition strength ratio for

n=28--75

. Both results are in agreement with theoretical predictions.