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Quantum state tomography of attosecond electron wavepackets

Demjaha, Ron LU (2022) In Lund reports on atomic physics (LRAP) PHYM01 20212
Atomic Physics
Department of Physics
Abstract
In this master thesis, a broad theoretical description is done of a novel
quantum state tomography protocol called KRAKEN. This protocol is
meant for the determination of the density matrix of an electronic state
created by absorption of XUV radiation in the vicinity of a Fano resonance. At first, a description of the KRAKEN protocol is provided.
Then, the theory of Fano resonances is discussed. After that, the physics
of two-photon transitions is presented. Finally, possible expansions of
KRAKEN using chirped or broadband IR probe pulses, are examined.
Popular Abstract
In this master thesis, what is described is a way of performing measurements on electrons in a gas. When high-intensity light such as from a laser interacts with atoms electrons can be knocked off and ejected into the vacuum. This new method of performing measurements on the electrons is called KRAKEN and allows us to analyze more complex cases than with previous methods. In particular, cases where the electron and ion exhibit so-called entanglement requires something like KRAKEN. In fact, KRAKEN provides the first-ever theoretical protocol for quantifying entanglement in free electrons. The physics behind this process is explained and simulations are presented to demonstrate aspects and limitations of KRAKEN. Possible extensions of the... (More)
In this master thesis, what is described is a way of performing measurements on electrons in a gas. When high-intensity light such as from a laser interacts with atoms electrons can be knocked off and ejected into the vacuum. This new method of performing measurements on the electrons is called KRAKEN and allows us to analyze more complex cases than with previous methods. In particular, cases where the electron and ion exhibit so-called entanglement requires something like KRAKEN. In fact, KRAKEN provides the first-ever theoretical protocol for quantifying entanglement in free electrons. The physics behind this process is explained and simulations are presented to demonstrate aspects and limitations of KRAKEN. Possible extensions of the protocol are also discussed to hopefully make it much faster to perform. (Less)
Please use this url to cite or link to this publication:
author
Demjaha, Ron LU
supervisor
organization
course
PHYM01 20212
year
type
H2 - Master's Degree (Two Years)
subject
keywords
quantum physics, quantum state tomography, atomic physics, quantum optics, density matrix, entanglement, state mixing, fano resonances, two-photon absorption
publication/series
Lund reports on atomic physics (LRAP)
report number
LRAP587
language
English
additional info
Hugo Laurell was the assistant supervisor of this thesis project.
id
9101308
date added to LUP
2022-10-07 16:02:45
date last changed
2022-10-07 16:02:45
@misc{9101308,
  abstract     = {{In this master thesis, a broad theoretical description is done of a novel
quantum state tomography protocol called KRAKEN. This protocol is
meant for the determination of the density matrix of an electronic state
created by absorption of XUV radiation in the vicinity of a Fano resonance. At first, a description of the KRAKEN protocol is provided.
Then, the theory of Fano resonances is discussed. After that, the physics
of two-photon transitions is presented. Finally, possible expansions of
KRAKEN using chirped or broadband IR probe pulses, are examined.}},
  author       = {{Demjaha, Ron}},
  language     = {{eng}},
  note         = {{Student Paper}},
  series       = {{Lund reports on atomic physics (LRAP)}},
  title        = {{Quantum state tomography of attosecond electron wavepackets}},
  year         = {{2022}},
}