Skip to main content

Research Repository

Advanced Search

All Outputs (111)

Non-Hermitian Floquet dynamics in absorption spectroscopy (2025)
Journal Article
Potvliege, R. M. (2025). Non-Hermitian Floquet dynamics in absorption spectroscopy. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 481(2311), Article 20240484. https://doi.org/10.1098/rspa.2024.0484

A theory of the absorption of a laser field by an atomic or condensed matter medium is presented for the case where the medium is also interacting with a strong electromagnetic field. The rotating wave approximation is not assumed for the latter. It... Read More about Non-Hermitian Floquet dynamics in absorption spectroscopy.

Spectroscopy of light atoms and bounds on physics beyond the standard model (2025)
Journal Article
Potvliege, R. M. (2025). Spectroscopy of light atoms and bounds on physics beyond the standard model. New Journal of Physics, 27(4), Article 045002. https://doi.org/10.1088/1367-2630/adc625

Newly calculated bounds on the strength of the coupling of an electron to a proton or a neutron by a fifth force are presented. These results are derived from the high precision spectroscopic data currently available for hydrogen, deuterium, helium-3... Read More about Spectroscopy of light atoms and bounds on physics beyond the standard model.

Microwave-optical spectroscopy of Rydberg excitons in the ultrastrong driving regime (2024)
Journal Article
Brewin, A., Gallagher, L. A. P., Pritchett, J. D., Wong, H. Q. X., Potvliege, R. M., Clark, S. J., & Jones, M. P. A. (2024). Microwave-optical spectroscopy of Rydberg excitons in the ultrastrong driving regime. New Journal of Physics, 26(11), Article 113018. https://doi.org/10.1088/1367-2630/ad8c74

We study the ultrastrong driving of Rydberg excitons in Cu2O by a microwave field. The effect of the field is studied using optical absorption spectroscopy, and through the observation of sidebands on the transmitted laser light. A model based on Flo... Read More about Microwave-optical spectroscopy of Rydberg excitons in the ultrastrong driving regime.

CoOMBE: A suite of open-source programs for the integration of the optical Bloch equations and Maxwell-Bloch equations (2024)
Journal Article
Potvliege, R., & Wrathmall, S. (2025). CoOMBE: A suite of open-source programs for the integration of the optical Bloch equations and Maxwell-Bloch equations. Computer Physics Communications, 306, Article 109374. https://doi.org/10.1016/j.cpc.2024.109374

The programs described in this article and distributed with it aim (1) at integrating the optical Bloch equations governing the time evolution of the density matrix representing the quantum state of an atomic system driven by laser or microwave field... Read More about CoOMBE: A suite of open-source programs for the integration of the optical Bloch equations and Maxwell-Bloch equations.

Addendum: Multichannel quantum defect theory of strontium bound Rydberg states (2014 J. Phys. B: At. Mol. Opt. Phys. 47 155001) (2024)
Journal Article
Vaillant, C. L., Jones, M. P. A., & Potvliege, R. M. (2024). Addendum: Multichannel quantum defect theory of strontium bound Rydberg states (2014 J. Phys. B: At. Mol. Opt. Phys. 47 155001). Journal of Physics B: Atomic, Molecular and Optical Physics, 57(19), Article 199401. https://doi.org/10.1088/1361-6455/ad76f0

Newly calculated multichannel quantum defect theory parameters and channel fractions are presented for the singlet and triplet S, P and D series and singlet F series of strontium. These results correct those reported in Vaillant et al (2014 J. Phys.... Read More about Addendum: Multichannel quantum defect theory of strontium bound Rydberg states (2014 J. Phys. B: At. Mol. Opt. Phys. 47 155001).

mqdtfit: A collection of Python functions for empirical multichannel quantum defect calculations (2024)
Journal Article
Potvliege, R. (2024). mqdtfit: A collection of Python functions for empirical multichannel quantum defect calculations. Computer Physics Communications, 300, Article 109172. https://doi.org/10.1016/j.cpc.2024.109172

The Python functions distributed with this article can be used for calculating the parameters of multichannel quantum defect theory models describing excited bound states of complex atoms. These parameters are obtained by fitting a model to experimen... Read More about mqdtfit: A collection of Python functions for empirical multichannel quantum defect calculations.

Trap induced broadening in a potential hydrogen lattice clock (2024)
Journal Article
Scott, J. P., Potvliege, R. M., Carty, D., & Jones, M. P. A. (2024). Trap induced broadening in a potential hydrogen lattice clock. Metrologia, 61(2), Article 025001. https://doi.org/10.1088/1681-7575/ad1e37

We consider the potential use of optical traps for precision measurements in atomic hydrogen (H). Using an implicit summation method, we calculate the atomic polarisability, the rates of elastic/inelastic scattering and the ionisation rate in the wav... Read More about Trap induced broadening in a potential hydrogen lattice clock.

Deuterium spectroscopy for enhanced bounds on physics beyond the standard model (2023)
Journal Article
Potvliege, R. M., Nicolson, A., Jones, M. P. A., & Spannowsky, M. (2023). Deuterium spectroscopy for enhanced bounds on physics beyond the standard model. Physical Review A, 108(5), Article 052825. https://doi.org/10.1103/physreva.108.052825

We consider the impact of combining precision spectroscopic measurements made in atomic hydrogen with similar measurements made in atomic deuterium on the search for physics beyond the standard model. Specifically, we consider the wide class of model... Read More about Deuterium spectroscopy for enhanced bounds on physics beyond the standard model.

Detection of 3–300 MHz electric fields using Floquet sideband gaps by “Rabi matching” dressed Rydberg atoms (2023)
Journal Article
Rotunno, A. P., Berweger, S., Prajapati, N., Simons, M. T., Artusio-Glimpse, A. B., Holloway, C. L., Jayaseelan, M., Potvliege, R., & Adams, C. (2023). Detection of 3–300 MHz electric fields using Floquet sideband gaps by “Rabi matching” dressed Rydberg atoms. Journal of Applied Physics, 134(13), Article 134501. https://doi.org/10.1063/5.0162101

Radio frequencies in high-frequency (HF) and very high-frequency (VHF) bands (3–300 MHz) are challenging for Rydberg atom-based detection schemes, as resonant detection requires exciting atoms to extremely high energy states. We demonstrate a method... Read More about Detection of 3–300 MHz electric fields using Floquet sideband gaps by “Rabi matching” dressed Rydberg atoms.

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.

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.

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.

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.