Zobrazeno 1 - 10
of 504
pro vyhledávání: '"HILL, JOSHUA P."'
Autor:
Hill, Joshua B., Mao, Yao-Yuan
Galaxies come in different sizes and morphologies, and these differences are thought to correlate with properties of their underlying dark matter halos. However, identifying the specific halo property that controls the galaxy size is a challenging ta
Externí odkaz:
http://arxiv.org/abs/2411.13484
Radio frequency (rf) receivers using Rydberg atoms offer appealing features over classical sensors, such as their size, frequency tuning range, and lack of field absorption. In this work, we extend the application space by demonstrating a Rydberg ato
Externí odkaz:
http://arxiv.org/abs/2407.20369
Publikováno v:
Rev. Sci. Instrum. 94, 094705 (2023)
Agile rf sources are a common requirement for control systems in quantum science and technology platforms. The direct digital synthesizer (DDS) often fills this role by allowing programmable control of the rf signals. Due to limitations of the DDS ar
Externí odkaz:
http://arxiv.org/abs/2307.02468
Autor:
Elgee, Peter K, Hill, Joshua C, Leblanc, Kermit-James E, Ko, Gabriel D, Kunz, Paul D, Meyer, David H, Cox, Kevin C
Publikováno v:
Appl. Phys. Lett. 123, 084001 (2023)
Rydberg electric field sensors exploit the large number of Rydberg resonances to provide sensitivity over a broad range of the electromagnetic spectrum. However, due to the difficulty of accessing resonant Rydberg states at ultra-high frequency (UHF)
Externí odkaz:
http://arxiv.org/abs/2305.08707
Autor:
Hill Joshua, Fahimi Farbod
Publikováno v:
Nonlinear Engineering, Vol 13, Iss 1, Pp 200-5 (2024)
In this article, two main assumptions commonly used in the reported literature are relaxed. First, instead of a continuous time controller, a discrete time controller is proposed. Second, the controller uses the flapping frequency as opposed to flapp
Externí odkaz:
https://doaj.org/article/d2b9f93f65794245bdf3a7673b89999c
We describe a new catalog of accelerating star candidates with Gaia $G\le 17.5$ mag and distances $d\le 100$ pc. Designated as Gaia Nearby Accelerating Star Catalog (GNASC), it contains 29,684 members identified using a supervised machine-learning al
Externí odkaz:
http://arxiv.org/abs/2303.09712
Autor:
Knarr, Samuel H., Bucklew, Victor G., Langston, Jerrod, Cox, Kevin C., Hill, Joshua C., Meyer, David H., Drakes, James A.
Rydberg states of alkali atoms, where the outer valence electron is excited to high principal quantum numbers, have large electric dipole moments allowing them to be used as sensitive, wideband, electric field sensors. These sensors use electromagnet
Externí odkaz:
http://arxiv.org/abs/2302.07316
Publikováno v:
Physical Review Applied 19, 014025 (2023)
Electric field sensors based on Rydberg atoms offer unique capabilities, relative to traditional sensors, for detecting radio-frequency signals. In this work, we demonstrate simultaneous demodulation and detection of five rf tones spanning nearly two
Externí odkaz:
http://arxiv.org/abs/2208.10287
Autor:
Hill, Joshua C., Holland, William K., Kunz, Paul D., Cox, Kevin C., Penttinen, Jussi-Pekka, Kantola, Emmi, Meyer, David H.
Publikováno v:
Optics Express Vol. 30, Issue 23, pp. 41408-41421 (2022)
Vertical external-cavity surface-emitting lasers (VECSELs) augmented by intra-cavity nonlinear optical frequency conversion have emerged as an attractive light source of ultraviolet to visible light for demanding scientific applications, relative to
Externí odkaz:
http://arxiv.org/abs/2206.00096
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