Zobrazeno 1 - 10
of 1 551
pro vyhledávání: '"Schmiegelow P"'
Autor:
Barreto, Nicolás Adrián Nuñez, Bonetto, Muriel, Luda, Marcelo Alejandro, Cormick, Cecilia, Schmiegelow, Christian Tomás
We present an experiment investigating the rotational Doppler effect using a single trapped ion excited by two copropagating vortex laser beams. The setup isolates the azimuthal gradients of the fields, eliminating longitudinal and curvature effects.
Externí odkaz:
http://arxiv.org/abs/2407.05080
Autor:
Verde, Maurizio, Schaefer, Ansgar, Zenz, Benjamin, Shehata, Zyad, Richter, Stefan, Schmiegelow, Christian T., von Zanthier, Joachim, Schmidt-Kaler, Ferdinand
We study collective light scattering from linear crystals with up to twelve $^{40}\text{Ca}^+$ ions, acting as coherent single photon emitters. Light-scattering is induced by two-photon laser excitation, starting from the S$_{1/2}$ to D$_{5/2}$ quadr
Externí odkaz:
http://arxiv.org/abs/2404.12513
Autor:
Barreto, Nicolás Adrián Nuñez, Bonetto, Muriel, Luda, Marcelo Alejandro, Cormick, Cecilia, Schmiegelow, Christian Tomás
We study the influence of micromotion on the spectrum of trapped ions with a lambda-type level scheme, leading to dark resonances due to coherent population trapping. We work with calcium ions trapped in a ring-shaped Paul trap, in which one can comp
Externí odkaz:
http://arxiv.org/abs/2402.01594
We present experimental results and a theoretical model that illustrate how competing eigenbases can determine the dynamics of a fluorescing atom. In the absence of a magnetic field, the atom can get trapped in a dark state, which inhibits fluorescen
Externí odkaz:
http://arxiv.org/abs/2310.18525
Publikováno v:
Sci Rep 13, 21283 (2023)
Spatially-structured laser beams, eventually carrying orbital angular momentum, affect electronic transitions of atoms and their motional states in a complex way. We present a general framework, based on the spherical tensor decomposition of the inte
Externí odkaz:
http://arxiv.org/abs/2306.17571
Publikováno v:
J. Opt. Soc. Am. B 40, C35-C39 (2023)
We present a design concept for a speckle based wavemeter that combines high spectral resolution and fast response times. Our device uses a fixed disperse medium with small coherence length as an optical pre-processor and a series of programmable opt
Externí odkaz:
http://arxiv.org/abs/2303.00679
Autor:
Barreto, Nicolás Nuñez, Giardino, Lucas, Crucianelli, Carla, Bonetto, Muriel, Drechsler, Martin, Schmiegelow, Christian Tomás
In this paper we present a method to measure transient fluorescent dynamics with single trapped ions in a Paul trap. We use $^{40}$Ca$^+$ ions which exhibit a $\Lambda$-type three-level system and measure the characteristic optical pumping times betw
Externí odkaz:
http://arxiv.org/abs/2303.00650
Autor:
Jane Hübertz Frederiksen, Ulf Birkedal, Sarah Bachmann, Elisabeth Victoria Eliesen, Lene Juel Rasmussen, Katja Venborg Pedersen, Lana Al‐Zehhawi, Susanne E. Boonen, Lotte Krogh, Karina Rønlund, Lise Graversen, Jannie Assenholt, Kjeld Schmiegelow, Karin Wadt, Anne‐Marie Gerdes, Thomas v. O. Hansen
Publikováno v:
Molecular Genetics & Genomic Medicine, Vol 12, Iss 11, Pp n/a-n/a (2024)
ABSTRACT Background Pathogenic variants in the mismatch repair genes are associated with an elevated lifetime risk of colorectal cancer (CRC). We previously identified two variants of uncertain significance (VUS) in the MLH1 gene, c.696_698del, p.(Cy
Externí odkaz:
https://doaj.org/article/3138d238b0bc48cdadc8df08238a908f
Autor:
Ulrikka Nygaard, Annelaura Bach Nielsen, Kia Hee Schultz Dungu, Lylia Drici, Mette Holm, Maud Eline Ottenheijm, Allan Bybeck Nielsen, Jonathan Peter Glenthøj, Lisbeth Samsø Schmidt, Dina Cortes, Inger Merete Jørgensen, Trine Hyrup Mogensen, Kjeld Schmiegelow, Matthias Mann, Nadja Hawwa Vissing, Nicolai J. Wewer Albrechtsen
Publikováno v:
Communications Biology, Vol 7, Iss 1, Pp 1-10 (2024)
Abstract Multisystem inflammatory syndrome in children (MIS-C) is a severe disease that emerged during the COVID-19 pandemic. Although recognized as an immune-mediated condition, the pathogenesis remains unresolved. Furthermore, the absence of a diag
Externí odkaz:
https://doaj.org/article/48a8c9538a9045699b5e329e6d316bf2
Autor:
Ulla Ashorn, Christentze Schmiegelow, James Dodd, Feiko O ter Kuile, Simon Kariuki, Nigel Klein, Julie Gutman, Asma Khalil, Alphaxard Manjurano, Jenny Hill, Michael Alifrangis, Kamija S Phiri, R Matthew Chico, George Mtove, Kephas Otieno, Samwel Gesase, Reginald A Kavishe, Georgia R Gore-Langton, Mwayiwawo Madanitsa, Hellen C Barsosio, Daniel T R Minja, Jacklin Mosha, Omari A Msemo, John P A Lusingu, Crispin Mukerebe, Pius Ikigo, Queen Saidi, Eric D Onyango, Helle Hansson, Patricia Jean Hunter, Matt Cairns
Publikováno v:
BMJ Public Health, Vol 2, Iss 2 (2024)
Objectives Malaria and curable sexually transmitted and reproductive tract infections (STIs/RTIs) are associated with adverse pregnancy outcomes. This study reports the prevalence and risk factors of curable STIs/RTIs, STI/RTI co-infection and STI/RT
Externí odkaz:
https://doaj.org/article/f98092842edc45d48459298dcf0e3cb3