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The multi-photon induced Fano effect
- Source :
- Nature communications. 2021. Vol. 12. P. 454 (1-9), Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021), Nature Communications, 12, 1, pp. 1-9, Nature Communications, Nature Communications, 12, 1-9
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- The ordinary Fano effect occurs in many-electron atoms and requires an autoionizing state. With such a state, photo-ionization may proceed via pathways that interfere, and the characteristic asymmetric resonance structures appear in the continuum. Here we demonstrate that Fano structure may also be induced without need of auto-ionization, by dressing the continuum with an ordinary bound state in any atom by a coupling laser. Using multi-photon processes gives complete, ultra-fast control over the interference. We show that a line-shape index q near unity (maximum asymmetry) may be produced in hydrogenic silicon donors with a relatively weak beam. Since the Fano lineshape has both constructive and destructive interference, the laser control opens the possibility of state-selective detection with enhancement on one side of resonance and invisibility on the other. We discuss a variety of atomic and molecular spectroscopies, and in the case of silicon donors we provide a calculation for a qubit readout application.<br />Fano resonances occur in many platforms that have auto-ionizing states. Here the authors show that auto-ionizing states are not required for multi-photon Fano resonance in a Si:P system with significant screening by using a pump-probe method.
- Subjects :
- Nonlinear optics
Photon
Science
многофотонные процессы
media_common.quotation_subject
Silicon photonics
Optical spectroscopy
General Physics and Astronomy
02 engineering and technology
Fano plane
Interference (wave propagation)
01 natural sciences
Asymmetry
Article
General Biochemistry, Genetics and Molecular Biology
law.invention
Mathematics::Algebraic Geometry
law
молекулярная спектроскопия
0103 physical sciences
Atom
Bound state
Physics::Atomic Physics
Фано эффект
010306 general physics
фотоионизация
media_common
Physics
Multidisciplinary
General Chemistry
FELIX Infrared and Terahertz Spectroscopy
атомная спектроскопия
021001 nanoscience & nanotechnology
Laser
Qubit
Atomic physics
0210 nano-technology
Subjects
Details
- ISSN :
- 20411723
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....9e421936367fc839a71077a256f264c3