Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Thomas Halfmann"'
Publikováno v:
New Journal of Physics, Vol 24, Iss 2, p 023012 (2022)
We present the experimental demonstration of light storage towards the single photon level at a long storage time by electromagnetically induced transparency in a rare-earth ion-doped Pr ^3+ :Y _2 SiO _5 crystal. We apply decoherence control by stati
Externí odkaz:
https://doaj.org/article/d55f2c5c9aca4094af274963caae0955
We perform experimental studies of resonantly enhanced sum-frequency mixing (SFM), driven by tunable, spectrally narrowband mid-infrared and fixed-frequency nanosecond laser pulses, aiming at applications in molecular gas detection. The mid-infrared
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2a71a52e6e47b0d932261849ad488b5
http://tuprints.ulb.tu-darmstadt.de/23075/
http://tuprints.ulb.tu-darmstadt.de/23075/
Publikováno v:
Applied Physics B. 128
We report on an all-solid-state light source for nanosecond (ns) laser pulses, with broad tunability in the mid-infrared, spectral bandwidth close to the Fourier transform limit, and pulse energy in the mJ regime. To this end, we extend a tunable, co
Autor:
Sergiy Stryzhenko, Alexander Bruns, Enno Giese, Ite Yu, Chia-Yu Hsu, Leonid Yatsenko, Thomas Halfmann, Thorsten Peters
Publikováno v:
Quantum Science and Technology
arXiv
arXiv
Nonclassical photon sources of high brightness are key components of quantum communication technologies. We here demonstrate the generation of narrowband, nonclassical photon pairs by employing spontaneous four-wave mixing in an optically-dense ensem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fa35019b479d6d2daba8a4ed230f5f7
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 55:154003
We experimentally demonstrate spatial confinement of atomic excitation by adiabatic passage processes in a rare-earth ion-doped Pr3+:Y2SiO5 crystal. In particular, we apply stimulated Raman adiabatic passage (STIRAP) and compare its performance with
Publikováno v:
Physical Review A. 103
We studied resonantly enhanced third-harmonic generation, induced by midinfrared, spectrally narrow-band, nanosecond laser pulses tuned in the vicinity of rovibrational molecular resonances. As we drive the frequency conversion process simultaneously
Autor:
Hamid R. Hamedi, Giedrius Žlabys, Verònica Ahufinger, Thomas Halfmann, Jordi Mompart, Gediminas Juzeliūnas
Publikováno v:
Optics express, Washington : Optical Society of America, 2022, vol. 30, iss. 9, p. 13915-13930
We consider a method of sub-wavelength superlocalization and patterning of atomic matter waves via a two dimensional stimulated Raman adiabatic passage (2D STIRAP) process. An atom initially prepared in its ground level interacts with a doughnut-shap
Loading and spatially-resolved characterization of a cold atomic ensemble inside a hollow-core fiber
Publikováno v:
Physical Review A
We present a thorough experimental investigation of the loading process of laser-cooled atoms from a magneto-optical trap into an optical dipole trap located inside a hollow-core photonic bandgap fiber, followed by propagation of the atoms therein. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e48a772ef692f6d6eb5aca7e2c1feb35
http://arxiv.org/abs/2101.04982
http://arxiv.org/abs/2101.04982
Publikováno v:
Proceedings ISBN: 9783658297169
For the efficient, emission-free and low-noise transport of goods and commodities in urban areas, BPW has developed the electric drive "eTransport" for 7.5t light duty trucks. In order to be able to take the specific customer requirements in differen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a4a265f4be4724e35f92822eaf514a9
https://doi.org/10.1007/978-3-658-29717-6_23
https://doi.org/10.1007/978-3-658-29717-6_23
Publikováno v:
Physical Review A. 102
We present experimental data on adiabatically driven frequency conversion with ultrashort (picosecond) laser pulses towards the vacuum-ultraviolet regime, enhanced by coherent population return and preparation of maximal atomic coherences. We generat