Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Hemingway, Bryan"'
We demonstrate an optical clock based on Ramsey-Bord\'e interferometry in a laser-cooled ${}^{40}$Ca beam. The mean velocity is reduced by an order of magnitude relative to a thermal beam and the transverse temperature approaches the Doppler limit, e
Externí odkaz:
http://arxiv.org/abs/2409.13512
Publikováno v:
Review of Scientific Instruments 93, 053002 (2022)
We measure the spectrum of tellurium-130 in the vicinity of the 461~nm ${}^1\text{S}_0-{}^{1}\text{P}_1$ cycling transition in neutral strontium, a popular element for atomic clocks, quantum information, and quantum-degenerate gases. The lack of hype
Externí odkaz:
http://arxiv.org/abs/2205.09832
Publikováno v:
Physical Review A 101 053410 (2020)
We observe bimodal fluorescence patterns from atoms in a fast atomic beam when the laser excitation occurs in the presence of a magnetic field and the atoms sample only a portion of the laser profile. The behavior is well explained by competition bet
Externí odkaz:
http://arxiv.org/abs/2005.05018
Publikováno v:
Journal of the Optical Society of America B, Vol. 35, Issue 7, pp. 1557-1562 (2018)
We have characterized the molecular tellurium (Te$_2$) spectrum in the vicinity of the 423nm $^1S_0-^1P_1$ and the 431nm $^3P_1-^3P_0$ transitions in neutral calcium. These transitions are relevant to optical clocks for atomic-beam characterization a
Externí odkaz:
http://arxiv.org/abs/1806.04629
Autor:
Hemingway, Bryan J.
The quantum mechanical nature of electrons at very low temperatures has posed interesting results in the resistivity of metals over the last century. When the temperature nears absolute zero, the resistivity due to electron-electron interactions and
Externí odkaz:
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352397253
We present a study of spin 1/2 Kondo singlets in single electron transistors under a microwave frequency bias excitation. We compare time-averaged conductance $G$ to predicted universal response with respect to microwave frequency, oscillation amplit
Externí odkaz:
http://arxiv.org/abs/1304.0037
Autor:
Liu, Tai-Min, Ngo, Anh T., Hemingway, Bryan, Herbert, Steven, Melloch, Michael, Ulloa, Sergio E., Kogan, Andrei
Publikováno v:
Physical Review B, 2012
We report detailed transport measurements in a quantum dot in a spin-flip co-tunneling regime, and a quantitative comparison of the data to microscopic theory. The quantum dot is fabricated by lateral gating of a GaAs/AlGaAs heterostructure, and the
Externí odkaz:
http://arxiv.org/abs/1110.5924
Publikováno v:
Phys. Rev. Lett. 103, 026803 (2009)
We have measured the magnetic splitting, $\Delta_K$, of a Kondo peak in the differential conductance of a Single-Electron Transistor while tuning the Kondo temperature, $T_K$, along two different paths in the parameter space: varying the dot-lead cou
Externí odkaz:
http://arxiv.org/abs/0910.3180
Publikováno v:
Phys. Rev. B 84, 075320 (2011) [4 pages]
We report a zero-bias peak in the differential conductance of a Quantum Point Contact (QPC), which splits in an external magnetic field. The peak is observed over a range of device conductance values starting significantly below $2e^2/h$. The observe
Externí odkaz:
http://arxiv.org/abs/0910.0570
Autor:
Hemingway, Bryan
This research explores the experience of navigating relational work in interpreter-mediated non-emergency healthcare consultations. Using the lived-experience of six healthcare sign language interpreters, this research reveals interpreter-mediated he
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::767d84fcb204688cbb7158d22ebbc277