Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Vutha Amar C."'
Publikováno v:
Phys. Rev. A 108, 012819 (2023)
Precision measurements with atoms and molecules can search for subtle violations of time-reversal symmetry (T) in nuclei, and thereby probe a variety of new physics models. We present a detailed scheme for a nuclear T-violation search experiment usin
Externí odkaz:
http://arxiv.org/abs/2304.10331
Precision spectroscopy of solid-state systems is challenging due to inhomogeneous broadening. We describe a technique -- coherent quantum beats -- that enables the measurement of small frequency shifts within an inhomogeneously broadened distribution
Externí odkaz:
http://arxiv.org/abs/2304.06189
Publikováno v:
New J. Phys. 25, 082001 (2023)
We have trapped BaF molecules in neon ice, and used laser-induced fluorescence spectroscopy to map out optical transitions in the trapped molecules. Our measurements show that the neon lattice does not significantly perturb certain optical transition
Externí odkaz:
http://arxiv.org/abs/2207.07279
Publikováno v:
Phys. Rev. A 101, 052505 (2020)
We report measurements of the isotope shifts of two transitions ($4f^46s\rightarrow [25044.7]^{\circ}_{7/2}$ and $4f^46s\rightarrow [25138.6]^{\circ}_{7/2}$) in neodymium ions (Nd$^+$) with hundredfold improved accuracy, using laser spectroscopy of a
Externí odkaz:
http://arxiv.org/abs/2002.08290
Autor:
Campbell Wesley C., Chan Cheong, DeMille David, Doyle John M., Gabrielse Gerald, Gurevich Yulia V., Hess Paul W., Hutzler Nicholas R., Kirilov Emil, O'Leary Brendon, Petrik Elizabeth S., Spaun Ben, Vutha Amar C.
Publikováno v:
EPJ Web of Conferences, Vol 57, p 02004 (2013)
Measurement of a non-zero electric dipole moment (EDM) of the electron within a few orders of magnitude of the current best limit of |de| < 1.05 × 10−27 e⋅cm [1] would be an indication of physics beyond the Standard Model. The ACME Collaboration
Externí odkaz:
https://doaj.org/article/5d4402ef5e4c4cd0a5c45ffde1cef626
Publikováno v:
Phys. Rev. Lett. 125, 153201 (2020)
Permanent electric dipole moments (EDMs) of fundamental particles such as the electron are signatures of parity and time-reversal violation due to physics beyond the standard model. EDM measurements probe new physics at energy scales well beyond the
Externí odkaz:
http://arxiv.org/abs/1909.02650
Publikováno v:
Phys. Rev. A 100, 032502 (2019)
The $4f^6$ $^{7}F_0$ $\to 4f^6$ $^{5}D_0$ intra-configuration transition in Sm:SrF$_2$ is forbidden for Sm$^{2+}$ ions in the octahedrally symmetric substitution sites in SrF$_2$. We report the direct observation of this transition using laser-induce
Externí odkaz:
http://arxiv.org/abs/1909.02633
Publikováno v:
Phys. Rev. A 100, 013401 (2019)
We produce cold and dense clouds of atomic ions (Ca$^+$, Dy$^+$) by laser ablation of metal targets and cryogenic buffer gas cooling of the resulting plasma. We measure the temperature and density of the ion clouds using laser absorption spectroscopy
Externí odkaz:
http://arxiv.org/abs/1906.03531
Publikováno v:
Phys. Rev. Research 1, 033137 (2019)
Collisions between background gas particles and the trapped ion in an atomic clock can subtly shift the frequency of the clock transition. The uncertainty in the correction for this effect makes a significant contribution to the total systematic unce
Externí odkaz:
http://arxiv.org/abs/1901.06443
Autor:
Jackson, Shira, Vutha, Amar C.
Publikováno v:
Phys. Rev. A 99, 063422 (2019)
We find a simple solution to the problem of probe laser light shifts in two-photon optical atomic clocks. We show that there exists a magic polarization at which the light shifts of the two atomic states involved in the clock transition are identical
Externí odkaz:
http://arxiv.org/abs/1812.10780