Zobrazeno 1 - 10
of 437
pro vyhledávání: '"Holliman, C. A."'
Autor:
Ryan-Anderson, C., Brown, N. C., Baldwin, C. H., Dreiling, J. M., Foltz, C., Gaebler, J. P., Gatterman, T. M., Hewitt, N., Holliman, C., Horst, C. V., Johansen, J., Lucchetti, D., Mengle, T., Matheny, M., Matsuoka, Y., Mayer, K., Mills, M., Moses, S. A., Neyenhuis, B., Pino, J., Siegfried, P., Stutz, R. P., Walker, J., Hayes, D.
Quantum state teleportation is commonly used in designs for large-scale fault-tolerant quantum computers. Using Quantinuum's H2 trapped-ion quantum processor, we implement the first demonstration of a fault-tolerant state teleportation circuit for a
Externí odkaz:
http://arxiv.org/abs/2404.16728
Autor:
Fan, M., Ready, Roy A., Li, H., Kofford, S., Kwapisz, R., Holliman, C. A., Ladabaum, M. S., Gaiser, A. N., Griswold, J. R., Jayich, A. M.
We report laser cooling and trapping of $^{224}$Ra$^+$ ions. This was realized via two-step photoionization loading of radium into an ion trap. A robust source for $^{224}$Ra atoms, which have a 3.6-day half-life, was realized with an effusive oven c
Externí odkaz:
http://arxiv.org/abs/2308.00241
Optical clocks are the apotheosis of precision measurement, but they require frequent maintenance by scientists. The supporting laser systems are a particularly demanding component of these instruments. To reduce complexity and increase robustness we
Externí odkaz:
http://arxiv.org/abs/2211.05313
Publikováno v:
Phys. Rev. A 105, 042801 (2022)
We report a measurement of the radium ion's $7p$ ${}^{2}P_{3/2}$ state lifetime, $\tau=4.78(3)$ ns. The measured lifetime is in good agreement with theoretical calculations, and will enable a determination of the differential scalar polarizability of
Externí odkaz:
http://arxiv.org/abs/2202.09743
Publikováno v:
Phys. Rev. Lett. 128, 033202 (2022)
We report the first operation of a Ra$^{+}$ optical clock, a promising high-performance clock candidate. The clock uses a single trapped $^{226}$Ra$^{+}$ ion and operates on the $7s\ ^2S_{1/2}\rightarrow$ $6d\ ^2D_{5/2}$ electric quadrupole transitio
Externí odkaz:
http://arxiv.org/abs/2201.07330
Autor:
Holliman, C., Prieto, H.
This work considers an extension of the SIR equations from epidemiology that includes a spatial variable. This model, referred to as the Kermack-McKendrick equations (KM), is a pair of diffusive partial differential equations, and methods developed f
Externí odkaz:
http://arxiv.org/abs/2109.09039
Publikováno v:
Phys. Rev. A 102, 042822 (2020)
We report a direct measurement of the $7s\ ^2S_{1/2}\rightarrow$ $7p\ ^2P_{3/2}$ electric dipole transition frequency in $^{226}$Ra$^{+}$. With a single laser-cooled radium ion we determine the transition frequency to be 785722.11(3) GHz by directly
Externí odkaz:
http://arxiv.org/abs/2008.13231
Autor:
Fan, M., Holliman, C. A., Shi, X., Zhang, H., Straus, M. W., Li, X., Buechele, S. W., Jayich, A. M.
Publikováno v:
Phys. Rev. Lett. 126, 023002 (2021)
We present an all-optical mass spectrometry technique to identify trapped ions. The new method uses laser-cooled ions to determine the mass of a cotrapped dark ion with a sub-dalton resolution within a few seconds. We apply the method to identify the
Externí odkaz:
http://arxiv.org/abs/2007.11614
Publikováno v:
Phys. Rev. A 100, 062512 (2019)
We report the first driving of the $7s\ ^2S_{1/2}\rightarrow 6d\ ^2D_{3/2}$ and $7s\ ^2S_{1/2}\rightarrow 6d\ ^2D_{5/2}$ electric quadrupole (E2) transitions in Ra$^{+}$. We measure the frequencies of both E2 transitions, and two other low-lying tran
Externí odkaz:
http://arxiv.org/abs/1910.06351
Publikováno v:
Phys. Rev. A 100, 062504 (2019)
We report a measurement of the radium ion's $7p\,\, ^2\!P_{3/2}$ state branching fractions and improved theoretical calculations. With a single laser-cooled $^{226}\mathrm{Ra}^+$ ion we measure the $P_{3/2}$ branching fractions to the $7s\,\,^2\!S_{1
Externí odkaz:
http://arxiv.org/abs/1909.05871