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ARC 3.0: An expanded Python toolbox for atomic physics calculations (2021)
Journal Article
Robertson, E., Sibalic, N., Potvliege, R., & Jones, M. (2021). ARC 3.0: An expanded Python toolbox for atomic physics calculations. Computer Physics Communications, 261(107814), Article 107814. https://doi.org/10.1016/j.cpc.2020.107814

ARC 3.0 is a modular, object-oriented Python library combining data and algorithms to enable the calculation of a range of properties of alkali and divalent atoms. Building on the initial version of the ARC library (Šibalić et al., 2017), which focus... Read More about ARC 3.0: An expanded Python toolbox for atomic physics calculations.

Probing new physics using Rydberg states of atomic hydrogen (2020)
Journal Article
Jones, M., Potvliege, R., & Spannowsky, M. (2020). Probing new physics using Rydberg states of atomic hydrogen. Physical Review Research, 2(1), Article 013244. https://doi.org/10.1103/physrevresearch.2.013244

We consider the role of high-lying Rydberg states of simple atomic systems such as 1H in setting constraints on physics beyond the standard model. We obtain highly accurate bound states energies for a hydrogen atom in the presence of an additional fo... Read More about Probing new physics using Rydberg states of atomic hydrogen.

Quasisimultons in Thermal Atomic Vapors (2019)
Journal Article
Ogden, T. P., Whittaker, K., Keaveney, J., Wrathmall, S., Adams, C., & Potvliege, R. (2019). Quasisimultons in Thermal Atomic Vapors. Physical Review Letters, 123(24), Article 243604. https://doi.org/10.1103/physrevlett.123.243604

The propagation of two-color laser fields through optically thick atomic ensembles is studied. We demonstrate how the interaction between these two fields spawns the formation of copropagating, two-color solitonlike pulses akin to the simultons found... Read More about Quasisimultons in Thermal Atomic Vapors.

Intercombination effects in resonant energy transfer (2015)
Journal Article
Vaillant, C., Potvliege, R., & Jones, M. (2015). Intercombination effects in resonant energy transfer. Physical Review A, 92(4), Article 042705. https://doi.org/10.1103/physreva.92.042705

We investigate the effect of intercombination transitions in excitation hopping processes such as those found in Förster resonance energy transfer. Taking strontium Rydberg states as our model system, the breakdown of LS coupling leads to weakly allo... Read More about Intercombination effects in resonant energy transfer.

Multichannel quantum defect theory of strontium bound Rydberg states (2014)
Journal Article
Vaillant, C., Jones, M., & Potvliege, R. (2014). Multichannel quantum defect theory of strontium bound Rydberg states. Journal of Physics B: Atomic, Molecular and Optical Physics, 47(15), Article 155001. https://doi.org/10.1088/0953-4075/47/15/155001

Using the reactance matrix approach, we systematically develop new multichannel quantum defect theory (MQDT) models for the singlet and triplet S, P, D and F states of strontium below the first ionization limit, based on improved energy level measure... Read More about Multichannel quantum defect theory of strontium bound Rydberg states.

Liouville-space R-matrix-Floquet description of atomic radiative processes involving autoionizing states in the presence of intense electromagnetic fields (2014)
Journal Article
Jacobs, V., Burke, P., & Potvliege, R. (2014). Liouville-space R-matrix-Floquet description of atomic radiative processes involving autoionizing states in the presence of intense electromagnetic fields. Journal of Physics B: Atomic, Molecular and Optical Physics, 47(2), Article 025401. https://doi.org/10.1088/0953-4075/47/2/025401

A reduced-density-operator description is developed for coherent optical phenomena in many-electron atomic systems, utilizing a Liouville-space, multiple-mode Floquet–Fourier representation. The Liouville-space formulation provides a natural generali... Read More about Liouville-space R-matrix-Floquet description of atomic radiative processes involving autoionizing states in the presence of intense electromagnetic fields.

Atoms in Intense Laser Fields (2012)
Book
Joachain, C., Kylstra, N., & Potvliege, R. (2012). Atoms in Intense Laser Fields. Cambridge University Press

Long-range Rydberg–Rydberg interactions in calcium, strontium and ytterbium (2012)
Journal Article
Vaillant, C., Jones, M., & Potvliege, R. (2012). Long-range Rydberg–Rydberg interactions in calcium, strontium and ytterbium. Journal of Physics B: Atomic, Molecular and Optical Physics, 45(13), Article 135004. https://doi.org/10.1088/0953-4075/45/13/135004

Long-range dipole–dipole and quadrupole–quadrupole interactions between pairs of Rydberg atoms are calculated perturbatively for calcium, strontium and ytterbium within the Coulomb approximation. Quantum defects, obtained by fitting existing laser sp... Read More about Long-range Rydberg–Rydberg interactions in calcium, strontium and ytterbium.

Spectroscopy of a cold strontium Rydberg gas (2011)
Journal Article
Millen, J., Lochead, G., Corbett, G., Potvliege, R., & Jones, M. (2011). Spectroscopy of a cold strontium Rydberg gas. Journal of Physics B: Atomic, Molecular and Optical Physics, 44(18), Article 184001. https://doi.org/10.1088/0953-4075/44/18/184001

We present a study of a cold strontium Rydberg gas. The narrowband laser excitation of Rydberg states in the range n = 20–80 from a 6 mK cloud of strontium atoms is detected using the spontaneous ionization of the Rydberg atoms. Using a high-resoluti... Read More about Spectroscopy of a cold strontium Rydberg gas.

Enhanced electric field sensitivity of rf-dressed Rydberg dark states (2010)
Journal Article
Bason, M., Tanasittikosol, M., Sargsyan, A., Mohapatra, A., Sarkisyan, D., Potvliege, R., & Adams, C. (2010). Enhanced electric field sensitivity of rf-dressed Rydberg dark states. New Journal of Physics, 12, Article 065015. https://doi.org/10.1088/1367-2630/12/6/065015

Optical detection of Rydberg states using electromagnetically induced transparency (EIT) enables continuous measurement of electric fields in a confined geometry. In this paper, we demonstrate the formation of radio frequency (rf)-dressed EIT resonan... Read More about Enhanced electric field sensitivity of rf-dressed Rydberg dark states.

Multiphoton ionization and multiphoton resonances in the tunneling regime (2010)
Journal Article
Potvliege, R., Mese, E., & Vucic, S. (2010). Multiphoton ionization and multiphoton resonances in the tunneling regime. Physical Review A, 81(5), Article 053402. https://doi.org/10.1103/physreva.81.053402

The rate of ionization of an atom of helium, argon, or hydrogen exposed to an intense monochromatic laser field and the quasienergy spectrum of their dressed states are studied for values of the Keldysh parameter between 1 and 0.6 and wavelengths bet... Read More about Multiphoton ionization and multiphoton resonances in the tunneling regime.

Quasienergy spectrum of complex atoms (2008)
Journal Article
Meṣe, E., & Potvliege, R. (2008). Quasienergy spectrum of complex atoms. Physical Review A, 77(2), Article 023414. https://doi.org/10.1103/physreva.77.023414

Representative sections of the quasienergy spectrum of argon and of alkali-metal atoms are presented for wavelengths between 250 nm and 800 nm and excursion amplitudes up to α0=20 a.u. The variation of the quasienergy spectrum with the wavelength of... Read More about Quasienergy spectrum of complex atoms.

The quasienergy spectrum of argon from 400 to 800 nm (2007)
Journal Article
Mese, E., & Potvliege, R. (2007). The quasienergy spectrum of argon from 400 to 800 nm. Laser Physics Letters, 4(5), 357-362

The Floquet quasienergy spectrum of argon atoms exposed to a strong laser field is presented for incident wavelengths of 400, 600, and 800 nm and electron excursion amplitudes up to 30 a.u. The calculation is performed by diagonalizing the Floquet Ha... Read More about The quasienergy spectrum of argon from 400 to 800 nm.

High-order above-threshold ionization of argon: plateau resonances and the Floquet quasienergy spectrum (2006)
Journal Article
Potvliege, R., & Vucic, S. (2006). High-order above-threshold ionization of argon: plateau resonances and the Floquet quasienergy spectrum. Physical Review A, 74(2), https://doi.org/10.1103/physreva.74.023412

The Floquet quasienergy spectrum of argon in a strong laser field of 800 nm wavelength is calculated for intensities up to 7×1013 W cm–2, and beyond for some states, using a discrete complex basis set. Many of the dressed excited states of interest s... Read More about High-order above-threshold ionization of argon: plateau resonances and the Floquet quasienergy spectrum.

Spatially selective loading of an optical lattice by light-shift engineering using an auxiliary laser field (2006)
Journal Article
Griffin, P., Weatherill, K., MacLeod, S., Potvliege, R., & Adams, C. (2006). Spatially selective loading of an optical lattice by light-shift engineering using an auxiliary laser field. New Journal of Physics, 8(11), https://doi.org/10.1088/1367-2630/8/1/011

I had the idea a long time ago that shifting the excited state energy level using an additional laser could be a useful tool in cold atoms experiments. In this paper we demonstrated experimentally the application of this idea to loading specific site... Read More about Spatially selective loading of an optical lattice by light-shift engineering using an auxiliary laser field.