Zobrazeno 1 - 10
of 39
pro vyhledávání: '"J R, Torgerson"'
Autor:
David DeMille, Eric R. Hudson, Robert A. Jackson, Scott T. Sullivan, Wade G. Rellergert, Markus P. Hehlen, J. R. Torgerson, R. R. Greco
Publikováno v:
Journal of Luminescence. 133:91-95
The nucleus of the thorium-229 isotope possesses a first excited nuclear state ( 229m Th) at an exceptionally low energy of 7.8±0.5 eV above the nuclear ground state ( 229g Th), as determined by earlier indirect measurements. This is the only nuclea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e61432e80ddec4164c1a0a5e88babed
https://doi.org/10.1016/j.jlumin.2011.09.037
https://doi.org/10.1016/j.jlumin.2011.09.037
Publikováno v:
Quantum Information and Computation. 12:1-8
We describe a four-dimensional ($\mathcal{D} = 4$) single-photon quantum cryptography protocol with up to twenty ($\mathcal{D} \times (2^2 + 1)$) possible states generated by a polarization-, phase- and time-encoding transmitter. This protocol can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a70ef11c05e04ad6d157fcbda1486aa
https://doi.org/10.26421/qic12.1-2-1
https://doi.org/10.26421/qic12.1-2-1
Autor:
A. Cingöz, Alain Lapierre, Nathan Leefer, Dmitry Budker, J. R. Torgerson, S. J. Ferrell, Steve K. Lamoreaux, A. T. Nguyen, Valeriy V. Yashchuk
Publikováno v:
The European Physical Journal Special Topics. 163:71-88
Electric-dipole transitions between nearly degenerate, opposite parity levels of atomic dysprosium (Dy) were monitored overan eight-month period to search for a variation in thefine-structure constant, α. The frequencies of thesetransitions are sens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d14d203ae9300c1ec8ca430101cb63b5
https://doi.org/10.1140/epjst/e2008-00810-0
https://doi.org/10.1140/epjst/e2008-00810-0
Publikováno v:
Physical Review Letters. 111
We report on the spectroscopy of radio-frequency transitions between nearly-degenerate, opposite-parity excited states in atomic dysprosium (Dy). Theoretical calculations predict that these states are very sensitive to variation of the fine-structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93be49fb6bceb0e580f9bde90a2049bb
https://doi.org/10.1103/physrevlett.111.060801
https://doi.org/10.1103/physrevlett.111.060801
Autor:
David Branning, Augusto Garuccio, F. Narducci, Carlos H. Monken, Leonard Mandel, J. R. Torgerson
Publikováno v:
Physical Review A. 53:1782-1785
Although the signal and idler light beams produced in the process of spontaneous parametric downconversion are mutually incoherent and exhibit no one-photon interference, interference effects should be observable after either the signal or the idler
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dab8056cc4334216534971d187994e4
https://doi.org/10.1103/physreva.53.1782
https://doi.org/10.1103/physreva.53.1782
Publikováno v:
Physics Letters A. 204:323-328
We report on a two-photon coincidence experiment that demonstrates the violation of local realism, as defined by Einstein, Podolsky and Rosen, by about 45 standard deviations without explicit use of Bell inequalities. The experiment is an implementat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b4aab64626d7879ea2835666c39eed9
https://doi.org/10.1016/0375-9601(95)00486-m
https://doi.org/10.1016/0375-9601(95)00486-m
Publikováno v:
Physical Review A. 48:4793-4796
An interference experiment with signal photons from two parametric down-converters, based on the process of induced coherence without induced emission, has been performed. A low-Q optical cavity provides a possible time delay for the idlers. Whether
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f240353da638c5cd8032ad5b33cbbdf1
https://doi.org/10.1103/physreva.48.4793
https://doi.org/10.1103/physreva.48.4793
Autor:
J. R. Torgerson, X. Zhao, Martin Schauer, D. Feldbaum, Jeremy Danielson, Li-Bang Wang, M. S. Rahaman, J. Zhang
Publikováno v:
Physical Review A. 82
We report isotope-selective loading and trapping of doubly ionized ytterbium into an rf quadrupole trap. Isotopically pure clouds of $^{174}\mathrm{Yb}$${}^{+}$ ions were first loaded into the rf trap via a multistage photoionization process. The Yb$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45cd8929aeb86c98a939314891e020fe
https://doi.org/10.1103/physreva.82.062518
https://doi.org/10.1103/physreva.82.062518
Autor:
Wade G. Rellergert, R. R. Greco, J. R. Torgerson, David DeMille, Eric R. Hudson, Markus P. Hehlen
Publikováno v:
Physical Review Letters. 104
We describe a novel approach to directly measure the energy of the narrow, low-lying isomeric state in $^{229}\mathrm{Th}$. Since nuclear transitions are far less sensitive to environmental conditions than atomic transitions, we argue that the $^{229
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19d848d52ba5c69707053da19f5d7280
https://doi.org/10.1103/physrevlett.104.200802
https://doi.org/10.1103/physrevlett.104.200802
A thermal atomic beam of dysprosium (Dy) atoms is cooled using the $4f^{10}6s^2 (J=8) \to 4f^{10}6s6p (J=9)$ transition at 421 nm. The cooling is done via a standing light wave orthogonal to the atomic beam. Efficient transverse cooling to the Dopple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cae47ce9dd05c61825fc68dda2c2fa4a
http://arxiv.org/abs/0912.2133
http://arxiv.org/abs/0912.2133
