Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Jens Nettersheim"'
Autor:
Ling-Na Wu, Jens Nettersheim, Julian Feß, Alexander Schnell, Sabrina Burgardt, Silvia Hiebel, Daniel Adam, André Eckardt, Artur Widera
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract Near continuous phase transitions, universal power-law scaling, characterized by critical exponents, emerges. This behavior reflects the singular responses of physical systems to continuous control parameters like temperature or external fie
Externí odkaz:
https://doaj.org/article/7ff78380b3024f4d96712f394896ac64
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Designing reliable nanoscale quantum-heat engines achieving high efficiency, high power and high stability is of fundamental and practical interest. Here, the authors report the realization of such a quantum machine using individual neutral Cs atoms
Externí odkaz:
https://doaj.org/article/6cef506e3293473388fd0464d5c06575
Publikováno v:
SciPost Physics Core, Vol 6, Iss 1, p 009 (2023)
We study the sensitivity of a collisional single-atom probe for ultracold gases. Inelastic spin-exchange collisions map information about the gas temperature $T$ or external magnetic field $B$ onto the quantum spin-population of single-atom probes, a
Externí odkaz:
https://doaj.org/article/b64ca9a88d8f46b4b18b2ec10a1bdcdf
Publikováno v:
PRX Quantum, Vol 3, Iss 4, p 040334 (2022)
Heat engines usually operate by exchanging heat with thermal baths at different (positive) temperatures. Nonthermal baths may, however, lead to a significant performance boost. Here, we experimentally analyze the power output of a single-atom quantum
Externí odkaz:
https://doaj.org/article/8f4aa462b4964d859267b1ec9c84d7d8
Autor:
Quentin Bouton, Jens Nettersheim, Daniel Adam, Felix Schmidt, Daniel Mayer, Tobias Lausch, Eberhard Tiemann, Artur Widera
Publikováno v:
Physical Review X, Vol 10, Iss 1, p 011018 (2020)
Quantum probes are atomic sized devices mapping information of their environment to quantum-mechanical states. By improving measurements and at the same time minimizing perturbation of the environment, they form a central asset for quantum technologi
Externí odkaz:
https://doaj.org/article/63aab87e751d4172af64a3e1e1672959
We report Ramsey spectroscopy on the clock states of individual Cs impurities immersed in an ultracold Rb bath. We record both the interaction-driven phase evolution and the decay of fringe contrast of the Ramsey interference signal to obtain informa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6033dab337609387276992e2f80d3460
http://arxiv.org/abs/2105.03331
http://arxiv.org/abs/2105.03331
Publikováno v:
Nature Communications
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Quantum heat engines are subjected to quantum fluctuations related to their discrete energy spectra. Such fluctuations question the reliable operation of thermal machines in the quantum regime. Here, we realize an endoreversible quantum Otto cycle in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab2ff7d1168037c27008885682fb94c2
Autor:
Daniel Adam, Eberhard Tiemann, Felix Schmidt, Tobias Lausch, Artur Widera, Quentin Bouton, Jens Nettersheim, Daniel Mayer
Publikováno v:
Web of Science
We employ collisions of individual atomic cesium (Cs) impurities with an ultracold rubidium (Rb) gas to probe atomic interaction with hyperfine- and Zeeman-state sensitivity. Controlling the Rb bath's internal state yields access to novel phenomena o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dba66b099692043e46b48f48efddb687
https://doi.org/10.1103/physrevlett.122.013401
https://doi.org/10.1103/physrevlett.122.013401
Autor:
Daniel Mayer, Tobias Lausch, Artur Widera, Steve Haupt, Daniel Adam, Jens Nettersheim, Felix Schmidt, Jennifer Koch, Quentin Bouton
We report on the experimental doping of a $^{87}$Rubidium (Rb) Bose-Einstein condensate (BEC) with individual neutral $^{133}$Cesium (Cs) atoms. We discuss the experimental tools and procedures to facilitate Cs-Rb interaction. First, we use degenerat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcef88d3d38c9b75ac60cca1e0a21c4a
Autor:
Artur Widera, Daniel Adam, Jens Nettersheim, Daniel Mayer, Tobias Lausch, Michael Hohmann, Farina Kindermann, Jennifer Koch, Felix Schmidt, Quentin Bouton
Publikováno v:
physica status solidi (b). 256:1800710
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63047095421fdfcc94cc8200a3275330
https://doi.org/10.1002/pssb.201800710
https://doi.org/10.1002/pssb.201800710