616 citations · 2.3k across the 41 of their papers we have counts for
41 papers
Coherent Control of Quantum and Classical Correlations in Photoionization
Axel Stenquist, Jan Marcus Dahlström
The ability to control quantum correlations in strongly driven systems is a central challenge across quantum science, with implications for ultrafast dynamics, quantum control, and…
Quantitative analysis of resonant ionization by smooth laser pulses: Connection between effective Hamiltonian theory and strong-field dressed continua
Jakob Nicolai Bruhnke, Jan Marcus Dahlström
Resonant photoionization in the intense high-frequency regime can exhibit extremely asymmetric Autler-Townes doublets whose origin remains debated. It has been attributed either to…
Reconciliation of effective Hamiltonians for intense light-matter interaction
Jakob Nicolai Bruhnke, Jan Marcus Dahlström
Essential-state models are central for quantum control and technology in broad regimes of light-matter interaction. The canonical effective Hamiltonian is obtained equivalently fro…
Photoelectron spectroscopy with a resonant dichromatic field: Role of geometric phase
Evan Munaro-Langloÿs, Axel Stenquist, Jan Marcus Dahlström
We investigate geometric-phase control in resonantly driven two-level atoms exposed to near-degenerate dichromatic laser pulses. In contrast to conventional two-color schemes based…
Causality of ultrafast photoionization from argon 3s using an ab initio relativistic approach
Rezvan Tahouri, Jan Marcus Dahlström
We study real-time photoionization flux at the Amusia-Cooper minimum (ACM) in argon using \textit{ab initio} simulations with the relativistic time-dependent configuration-int…
Coherent control of ionization via stabilization by resonant pulse pairs
Edvin Olofsson, Evan Lovelle Fulton, Rezvan Tahouri +3
We study the nonlinear and resonant process of two-photon ionization of atoms (He and H) in a pump-probe scheme. The pump pulse prepares the quantum system in a superposition of th…
Giant counter-rotating oscillations on the attosecond timescale
Jakob Nicolai Bruhnke, Edvin Olofsson, Axel Stenquist +1
We predict an unexplored type of ultrastrong coupling between atoms and intense ultraviolet light that leads to giant population oscillations on the attosecond timescale. These cou…
Harnessing Time Symmetry to Fundamentally Alter Entanglement in Photoionization
Axel Stenquist, Jan Marcus Dahlström
The Grobe--Eberly doublet phenomenon occurs in photoelectron distributions when a field dresses the remaining ion. Its manifestation is due to entanglement between a free electron…
Mollow-like triplets in ultra-fast resonant absorption
Axel Stenquist, Felipe Zapata, Edvin Olofsson +5
We show that resonant absorption of smooth laser fields can yield Mollow-like triplet patterns. General conditions for such triplets are derived and illustrated with a super-Gaussi…
Circularly polarized RABBIT applied to a Rabi-cycling atom
Yijie Liao, Edvin Olofsson, Jan Marcus Dahlström +3
We utilize the reconstruction of attosecond beating by interference of two-photon transitions (RABBIT) technique to study the phase of a Rabi-cycling atom using circularly polarize…
Generation of entanglement using a short-wavelength seeded free-electron laser
Saikat Nandi, Axel Stenquist, Asimina Papoulia +25
Quantum entanglement between the degrees of freedom encountered in the classical world is challenging to observe due to the surrounding environment. To elucidate this issue, we inv…
Spin-Polarized Photoelectrons in the Vicinity of Spectral Features
Stefanos Carlström, Rezvan Tahouri, Asimina Papoulia +4
It has been shown by Fano (1969) https://doi.org/10.1103/PhysRev.178.131 that photoionization of a cæsium atom by a laser pulse tuned to the vicinity of a Cooper minimum generates…
Control of Spin Polarization through Recollisions
Stefanos Carlström, Jan Marcus Dahlström, Misha Yu Ivanov +2
Using only linearly polarized light, we study the possibility of generating spin-polarized photoelectrons from xenon atoms. No net spin polarization is possible, since the xenon gr…
Photoelectron signature of dressed-atom stabilization in intense XUV field
Edvin Olofsson, Jan Marcus Dahlström
Non-perturbative resonant multiphoton ionization is studied using the resolvent operator technique. Scaling parameters for effective two-level Hamiltonians are computed for…
Gauge-invariant absorption of light from a coherent superposition of states
Axel Stenquist, Felipe Zapata, Jan Marcus Dahlström
Absorption and emission of light is studied theoretically for excited atoms in coherent superposition of states subjected to isolated attosecond pulses in the extreme ultraviolet r…
Thomas--Reiche--Kuhn Correction for Truncated Configuration Interaction Spaces: Case of Laser-Assisted Dynamical Interference
Mattias Bertolino, Stefanos Carlström, Jasper Peschel +3
The Thomas--Reiche--Kuhn sum rule is used to form an effective potential that is added to the time-dependent configuration interaction singles (TDCIS) equations of motion in veloci…
Rydberg Atomic Antenna in Strongly Driven Multi-Electron Atoms
Stefanos Carlström, Jan Marcus Dahlström, Misha Yu Ivanov +1
We study the role of intermediate excitations of Rydberg states as an example of Kuchiev's "atomic antenna" in above-threshold ionization of xenon, in particular their effect on th…
General Time-Dependent Configuration-Interaction Singles II: The Atomic Case
Stefanos Carlström, Mattias Bertolino, Jan Marcus Dahlström +1
We present a specialization of the grid-based implementation of the time-dependent configuration-interaction singles described in the preceding paper (arXiv:2204.09966) to the case…
Studying ultrafast Rabi dynamics with a short-wavelength seeded free-electron laser
Saikat Nandi, Edvin Olofsson, Mattias Bertolino +26
Rabi oscillations are periodic modulations of populations in two-level systems interacting with a time-varying field. They are ubiquitous in physics with applications in different…
Relativistic time-dependent configuration-interaction singles
Felipe Zapata, Jimmy Vinbladh, Anton Ljungdahl +2
In this work, a derivation and implementation of the relativistic time-dependent configuration interaction singles (RTDCIS) method is presented. Various observables for krypton and…
Complete characterization of multi-channel single photon ionization
Jasper Peschel, David Busto, Marius Plach +11
Ionization of atoms and molecules by absorption of a light pulse results in electron wavepackets carrying information on the atomic or molecular structure as well as on the dynamic…
Multiphoton interaction phase shifts in attosecond science
Mattias Bertolino, Jan Marcus Dahlström
Ab initio simulations of a range of interferometric experiments are used to identify a strong dependence on multiphoton phase shifts in above-threshold ionization. A simple rule of…
Noise Free On-Demand Atomic Frequency Comb Quantum Memory
Sebastian P. Horvath, Mohammed K. Alqedra, Adam Kinos +4
We present an extension of the atomic frequency comb protocol that utilizes the Stark effect to perform noise-free, on-demand, control. An experimental realization of this protocol…
Fano's propensity rule in angle-resolved attosecond pump-probe photoionization
David Busto, Jimmy Vinbladh, Shiyang Zhong +8
In a seminal article, Fano predicts that absorption of light occurs preferably with increase of angular momentum. Here we generalize Fano's propensity rule to laser-assisted photoi…