Probe of Rydberg-Atom Transitions via an Amplitude-Modulated Optical Standing Wave with a Ponderomotive Interaction

Moore, Kaitlin; Raithel, Georg

doi:10.1103/physrevlett.115.163003

Cited by 7 publications

(12 citation statements)

References 15 publications

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“…IV B, are attractive for applications that include quantum computing and simulation [1][2][3], and high-precision spectroscopy [7,8,22]. Weak Rydberg-atom lattices at magic wavelengths [44] can minimize trap-induced shifts of certain transitions [6,7]. Further, the nF j Rydberg states we have considered in our examples can serve as launch states for circular-state production [5,7].…”

Section: Discussionmentioning

confidence: 96%

“…Rydberg atoms in optical lattices and traps have gained interest in the fields of quantum computing and simulations [1][2][3][4], quantum control [5], and high-precision spectroscopy [6][7][8], as the lattice confines the atoms and extends interaction times. However, the binding energy of Rydberg atoms is several orders of magnitude below the photon energy ω of commonly used optical-lattice fields.…”

Section: Introductionmentioning

confidence: 99%

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Photoionization of Rydberg Atoms in Optical Lattices

Cardman,

MacLennan,

Anderson

et al. 2021

Preprint

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We develop a formalism for photoionization (PI) and potential energy curves (PECs) of Rydberg atoms in ponderomotive optical lattices and apply it to examples covering several regimes of the optical-lattice depth. The effect of lattice-induced PI on Rydberg-atom lifetime ranges from noticeable to highly dominant when compared with natural decay. The PI behavior is governed by the generally rapid decrease of the PI cross sections as a function of angular-momentum ( ), and by lattice-induced -mixing across the optical-lattice PECs. In GHz-deep lattices, -mixing leads to a rich PEC structure, and the significant low-PI cross sections are distributed over many latticemixed Rydberg states. In lattices less than several tens-of-MHz deep, atoms on low-PECs are essentially -mixing-free and maintain large PI cross sections, while atoms on high-PECs trend towards being PI-free. Characterization of PI in GHz-deep Rydberg-atom lattices may be beneficial for optical control and quantum-state manipulation of Rydberg atoms, while data on PI in shallower lattices are potentially useful in high-precision spectroscopy and quantum-computing applications of lattice-confined Rydberg atoms.

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Photoionization of Rydberg Atoms in Optical Lattices

Cardman,

MacLennan,

Anderson

et al. 2021

Preprint

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show abstract

“…If the trapping-or lattice-beam wavelength is set at a PI minimum, the trapped atoms will be less prone to PI by the trapping beams. The absence of Rydberg-atom PI could be important, for instance, in experiments on quantum simulation and quantum information processing using Rydberg atoms [5][6][7][8], quantum control [9,10], highprecision spectroscopy [11][12][13][14], and in large-scale arrays of Rydberg atoms that could potentially be trapped [15].…”

Section: Introductionmentioning

confidence: 99%

Photoionization of $nS$ and $nD$ Rydberg atoms of Rb and Cs from the near-infrared to the ultraviolet spectral region

Viray,

Paradis,

Raithel

2021

Preprint

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We present calculations of the photoionization (PI) cross sections of rubidium and cesium Rydberg atoms for light with wavelengths ranging from the infrared to the ultraviolet, using model potentials from [M. Marinescu, H. R. Sadeghpour, and A. Dalgarno, Phys. Rev. A 49, 982 (1994)]. The origins of pronounced PI minima are identified by investigating the free-electron wavefunctions. These include broad PI minima in the nS to ǫP PI channels of both Rb and Cs, with free-electron energy ǫ, which are identified as Cooper minima. Much narrower PI minima in the nD to ǫF channels are due to shape resonances of the free-electron states. We describe possible experimental procedures for measuring the PI minima, and we discuss their implications in fundamental atomic physics as well as in practical applications.

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“…5), it fails to describe the central, narrow peak observed in ponderomotive spectroscopy. There, the cooling and trapping of the atoms in a magic lattice [23], combined with the fact that the phase of the Rabi frequency is constant within a potential well, allow us to achieve Doppler-free, Fourier-limited line-widths of the central peak (see Fig. 5).…”

Section: Doppler Effectmentioning

confidence: 99%

“…5). In order to model the spectra, we employ a simulation program that treats the center-of-mass dynamics of the atoms (due to lattice-induced forces) classically and the internal, modulation-driven dynamics quantummechanically [10,23,39]. The effects of temperature on the population fraction that becomes excited into the upper state are shown in Fig.…”

Section: Doppler Effectmentioning

confidence: 99%

Measuring the Rydberg constant using circular Rydberg atoms in an intensity-modulated optical lattice

2017

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A method for performing a precision measurement of the Rydberg constant, R∞, using cold circular Rydberg atoms is proposed. These states have long lifetimes, as well as negligible quantumelectrodynamics (QED) and no nuclear-overlap corrections. Due to these advantages, the measurement can help solve the "proton radius puzzle" [Bernauer, Pohl, Sci. Am. 310, 32 (2014)]. The atoms are trapped using a Rydberg-atom optical lattice, and transitions are driven using a recentlydemonstrated lattice-modulation technique to perform Doppler-free spectroscopy. The circular-state transition frequency yields R∞. Laser wavelengths and beam geometries are selected such that the lattice-induced transition shift is minimized. The selected transitions have no first-order Zeeman and Stark corrections, leaving only manageable second-order Zeeman and Stark shifts. For Rb, the projected relative uncertainty of R∞ in a measurement under the presence of the Earth's gravity is 10 −11 , with the main contribution coming from the residual lattice shift. This could be reduced in a future micro-gravity implementation. The next-important systematic arises from the Rb + polarizability (relative-uncertainty contribution of ≈ 3 × 10 −12 ).

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Probe of Rydberg-Atom Transitions via an Amplitude-Modulated Optical Standing Wave with a Ponderomotive Interaction

Cited by 7 publications

References 15 publications

Photoionization of Rydberg Atoms in Optical Lattices

Photoionization of Rydberg Atoms in Optical Lattices

Photoionization of $nS$ and $nD$ Rydberg atoms of Rb and Cs from the near-infrared to the ultraviolet spectral region

Measuring the Rydberg constant using circular Rydberg atoms in an intensity-modulated optical lattice

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