Zobrazeno 1 - 10
of 841
pro vyhledávání: '"Jan Marcus"'
Autor:
Stenquist, Axel, Dahlström, Jan Marcus
The Grobe--Eberly doublet phenomenon occurs in photoelectron distributions when the remaining ion is dressed by a field. As was recently shown, the doublet can be interpreted as a signature of quantum entanglement between photoelectrons and strongly
Externí odkaz:
http://arxiv.org/abs/2405.03339
Autor:
Stenquist, Axel, Zapata, Felipe, Olofsson, Edvin, Liao, Yijie, Sveborn, Elna, Bruhnke, Jakob Nicolai, Verdozzi, Claudio, Dahlström, Jan Marcus
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-Gaussian pulse sequence. Gaussian pulses can not exhibit triplets, super-Gau
Externí odkaz:
http://arxiv.org/abs/2403.18676
Autor:
Liao, Yijie, Olofsson, Edvin, Dahlström, Jan Marcus, Pi, Liang-Wen, Zhou, Yueming, Lu, Peixiang
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 polarized extreme ultraviolet and infrared (IR) fields, where the IR field ind
Externí odkaz:
http://arxiv.org/abs/2312.12076
Autor:
Nandi, Saikat, Stenquist, Axel, Papoulia, Asimina, Olofsson, Edvin, Badano, Laura, Bertolino, Mattias, Busto, David, Callegari, Carlo, Carlström, Stefanos, Danailov, Miltcho B., Demekhin, Philipp V., Di Fraia, Michele, Eng-Johnsson, Per, Feifel, Raimund, Gallician, Guillaume, Giannessi, Luca, Gisselbrecht, Mathieu, Manfredda, Michele, Meyer, Michael, Miron, Catalin, Peschel, Jasper, Plekan, Oksana, Prince, Kevin C., Squibb, Richard J., Zangrando, Marco, Zapata, Felipe, Zhong, Shiyang, Dahlström, Jan Marcus
Publikováno v:
Science Advances 10, eado0668 (2024)
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 investigate the entanglement generated over ultrafast timescales in a bip
Externí odkaz:
http://arxiv.org/abs/2312.04442
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-8 (2024)
Abstract The development in attosecond physics allows for unprecedented control of atoms and molecules in the time domain. Here, ultrashort pulses are used to prepare atomic ions in specific magnetic states, which may be important for controlling cha
Externí odkaz:
https://doaj.org/article/c7896460deb6402990ff529ccdbcb346
Autor:
Carlström, Stefanos, Tahouri, Rezvan, Papoulia, Asimina, Dahlström, Jan Marcus, Ivanov, Misha Yu, Smirnova, Olga, Patchkovskii, Serguei
It has been shown by Fano (1969) https://doi.org/10.1103/PhysRev.178.131 that photoionization of a c{\ae}sium atom by a laser pulse tuned to the vicinity of a Cooper minimum generates spin-polarized electrons. Here we show that while photoionization
Externí odkaz:
http://arxiv.org/abs/2306.15665
Autor:
Carlström, Stefanos, Dahlström, Jan Marcus, Ivanov, Misha Yu, Smirnova, Olga, Patchkovskii, Serguei
Publikováno v:
Physical Review A 108(4), 043104 (2023)
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 ground state is spin-less, but when the photoelectron are measured in co
Externí odkaz:
http://arxiv.org/abs/2306.12823
Autor:
Olofsson, Edvin, Dahlström, Jan Marcus
Non-perturbative resonant multiphoton ionization $(1+1)$ is studied using the resolvent operator technique. Scaling parameters for effective two-level Hamiltonians are computed for hydrogen and helium atoms to provide a quantitative description of Ra
Externí odkaz:
http://arxiv.org/abs/2305.07363
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 range. A gauge invariant formulation of transient absorption theory is
Externí odkaz:
http://arxiv.org/abs/2302.05345