Summary form only given. Measurements of Rydberg states lifetime are a powerful test for calculations involving many-body problems and alkali atoms, and have been used as prototypes for such a study. Cold trapped atoms provide an interesting sample to investigate high excited states lifetime with great advantage compared to traditional atomic beam techniques. Effects on measured lifetimes of the excited atoms such as superradiance and collisions may be controlled and even suppressed by using cold atoms held in a trap. In this work we measured the lifetime of a sequence of states S, P and D as a function of the principal quantum number (n). These highly excited states have remarkable properties due to their weakly bound outer electron energies and their electron's large orbit radius. Due to the very weak binding energies, these states tend to be very sensitive to perturbations, such as external electric fields that are used to detect atoms in these states.Summary form only given. Measurements of Rydberg states lifetime are a powerful test for calculations involving many-body problems and alkali atoms, and have been used as prototypes for such a study. Cold trapped atoms provide an interesting sample to investigate high excited states lifetime with great advantage compared to traditional atomic beam techniques. Effects on measured lifetimes of the excited atoms such as superradiance and collisions may be controlled and even suppressed by using cold atoms held in a trap. In this work we measured the lifetime of a sequence of states S, P and D as a function of the principal quantum number (n). These highly excited states have remarkable properties due to their weakly bound outer electron energies and their electron's large orbit radius. Due to the very weak binding energies, these states tend to be very sensitive to perturbations, such as external electric fields that are used to detect atoms in these states.

Quantum Electronics and Laser Science ConferenceJun 25, 20030 citations

Precision Measurements of Excited State Atomic Lifetimes in Rb and K

Jerry Sell, Brian M. Patterson, Alina Gearba +5 more

APSMay 1, 20190 citations

Spectroscopy of the 85Rb 4 D3/2 state for hyperfine-structure determination

Alisher Duspayev, Georg A. Raithel

Abstract We report a measurement of the hyperfine-structure constants of the 85Rb 4 D 3 / 2 state using two-photon optical spectroscopy of the 5 S 1 / 2 → 4 D 3 / 2 transition. The spectra are acquired by measuring the transmission of the low-power 795 nm lower-stage laser beam through a cold-atom sample as a function of laser frequency, with the frequency of the upper-stage, 1476 nm laser fixed. All 4 hyperfine components of the 4 D 3 / 2 state are well-resolved in the experimental data. The dominant systematic is the light shift from the 1476 nm laser, which is addressed by extrapolating line positions measured for a set of 1476 nm laser powers to zero laser power. The analysis of our experimental data yields both the magnetic-dipole and electric-quadrupole constants for the 85Rb 4 D 3 / 2 level, without using earlier hyperfine measurements of other atomic levels. The respective results, A = 7.419(35) MHz and B = 4.19(19) MHz, are discussed in context with previous works. Our investigation may be useful for optical atomic clocks for precision metrology and emerging atom-based quantum technologies, all-infrared excitation of Rb Rydberg levels, and molecular physics.Abstract We report a measurement of the hyperfine-structure constants of the 85Rb 4 D 3 / 2 state using two-photon optical spectroscopy of the 5 S 1 / 2 → 4 D 3 / 2 transition. The spectra are acquired by measuring the transmission of the low-power 795 nm lower-stage laser beam through a cold-atom sample as a function of laser frequency, with the frequency of the upper-stage, 1476 nm laser fixed. All 4 hyperfine components of the 4 D 3 / 2 state are well-resolved in the experimental data. The dominant systematic is the light shift from the 1476 nm laser, which is addressed by extrapolating line positions measured for a set of 1476 nm laser powers to zero laser power. The analysis of our experimental data yields both the magnetic-dipole and electric-quadrupole constants for the 85Rb 4 D 3 / 2 level, without using earlier hyperfine measurements of other atomic levels. The respective results, A = 7.419(35) MHz and B = 4.19(19) MHz, are discussed in context with previous works. Our investigation may be useful for optical atomic clocks for precision metrology and emerging atom-based quantum technologies, all-infrared excitation of Rb Rydberg levels, and molecular physics.

arXiv:2305.00265New Journal of PhysicsAug 25, 20235 citations

Measurement of Rydberg-state lifetimes using cold trapped atoms

A. L. de Oliveira, M. W. Mancini, Vanderlei Salvador Bagnato +1 more

In this paper, we demonstrate the use of a cold trapped sample of neutral atoms to perform high-precision measurement of the lifetime for a sequence of Rydberg states of ${}^{85}\mathrm{Rb}.$ States of principal quantum number lying between $n=31$ and $n=45$ are produced and their lifetimes measured using field ionization. Experimental results are compared with existing theories. This is an important demonstration concerning the possibilities of high-precision spectroscopy in the time domain using cold atomic samples.In this paper, we demonstrate the use of a cold trapped sample of neutral atoms to perform high-precision measurement of the lifetime for a sequence of Rydberg states of ${}^{85}\mathrm{Rb}.$ States of principal quantum number lying between $n=31$ and $n=45$ are produced and their lifetimes measured using field ionization. Experimental results are compared with existing theories. This is an important demonstration concerning the possibilities of high-precision spectroscopy in the time domain using cold atomic samples.

Physical Review AFeb 5, 200246 citations

Measurements of lifetimes of the excited levels in cesium and rubidium ions

Sargis Ter-Avetisyan, Valeri O. Papanyan, A.G. Maloyan

OptSpOct 1, 19960 citations

In this paper, we demonstrate the use of a cold trapped sample of neutral atoms to perform high-precision measurement of the lifetime for a sequence of Rydberg states of

{}^{85}\mathrm{Rb}.

States of principal quantum number lying between

n=31

and

n=45

are produced and their lifetimes measured using field ionization. Experimental results are compared with existing theories. This is an important demonstration concerning the possibilities of high-precision spectroscopy in the time domain using cold atomic samples.