Publikation: Femtosecond measurements of electric fields : from classical amplitudes to quantum fluctuations
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2017
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European Union (EU): 290876
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Ultrafast Quantum Physics in Amplitude and Phase - UltraPhase, ERC Advanced Grant
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Open Access Green
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European Journal of Physics. 2017, 38(2), 024003. ISSN 0143-0807. eISSN 1361-6404. Available under: doi: 10.1088/1361-6404/aa53a2
Zusammenfassung
Ultrabroadband electro-optic sampling is presented as an extremely sensitive technique to detect electric field amplitudes in free space. The temporal resolution provided by few-femtosecond laser pulses results in a bandwidth exceeding 100 THz, potentially covering the entire infrared spectral range. A pedagogic introduction to the operational principle of the method is given along the lines of a classical coherent input field and a zincblende-type electro-optic sensor. We then show that even the bare vacuum fluctuations of the electric field in the quantum ground state may be detected. This time-domain approach to quantum physics operates directly on sub-cycle scales where no local energy conservation holds. Therefore, signals may be obtained from purely virtual photons without amplification to finite intensity.
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530 Physik
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RIEK, Claudius, Denis V. SELETSKIY, Alfred LEITENSTORFER, 2017. Femtosecond measurements of electric fields : from classical amplitudes to quantum fluctuations. In: European Journal of Physics. 2017, 38(2), 024003. ISSN 0143-0807. eISSN 1361-6404. Available under: doi: 10.1088/1361-6404/aa53a2BibTex
@article{Riek2017-03-01Femto-37290,
year={2017},
doi={10.1088/1361-6404/aa53a2},
title={Femtosecond measurements of electric fields : from classical amplitudes to quantum fluctuations},
number={2},
volume={38},
issn={0143-0807},
journal={European Journal of Physics},
author={Riek, Claudius and Seletskiy, Denis V. and Leitenstorfer, Alfred},
note={Article Number: 024003}
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