Zobrazeno 1 - 10
of 120
pro vyhledávání: '"Hoffman, J. E."'
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics 48 165004 (2015)
We experimentally demonstrate optical trapping of 87Rb atoms using a two-color evanescent field around an optical nanofiber. In our trapping geometry, a blue-detuned traveling wave whose polarization is nearly parallel to the polarization of a red-de
Externí odkaz:
http://arxiv.org/abs/1412.6754
Akademický článek
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Autor:
Hoffman, J. E., Ravets, S., Grover, J. A., Solano, P., Kordell, P. R., Wong-Campos, J. D., Orozco, L. A., Rolston, S. L.
Publikováno v:
AIP Advances 4, 067124 (2014)
We present a procedure for reproducibly fabricating ultrahigh transmission optical nanofibers (530 nm diameter and 84 mm stretch) with single-mode transmissions of 99.95 $ \pm$ 0.02%, which represents a loss from tapering of 2.6 $\,\times \,$ 10$^{-5
Externí odkaz:
http://arxiv.org/abs/1405.3258
Autor:
Comin, R., Frano, A., Yee, M. M., Yoshida, Y., Eisaki, H., Schierle, E., Weschke, E., Sutarto, R., He, F., Soumyanarayanan, A., He, Yang, Tacon, M. Le, Elfimov, I. S., Hoffman, J. E., Sawatzky, G. A., Keimer, B., Damascelli, A.
Publikováno v:
Science 343, 390-392 (2014)
The understanding of the origin of superconductivity in cuprates has been hindered by the apparent diversity of intertwining electronic orders in these materials. We combined resonant x-ray scattering (REXS), scanning-tunneling microscopy (STM), and
Externí odkaz:
http://arxiv.org/abs/1312.1343
Autor:
Ravets, S., Hoffman, J. E., Kordell, P. R., Wong-Campos, J. D., Rolston, S. L., Orozco, L. A.
Publikováno v:
JOSA A, Vol. 30, Issue 11, pp. 2361-2371 (2013)
We present an experimental and theoretical study of the energy transfer between modes during the tapering process of an optical nanofiber through spectrogram analysis. The results allow optimization of the tapering process, and we measure transmissio
Externí odkaz:
http://arxiv.org/abs/1310.7228
Publikováno v:
Optics Express, Vol. 21, Issue 15, pp. 18325-18335 (2013)
Optical nanofibers confine light to subwavelength scales, and are of interest for the design, integration, and interconnection of nanophotonic devices. Here we demonstrate high transmission (> 97%) of the first family of excited modes through a 350 n
Externí odkaz:
http://arxiv.org/abs/1308.1965
Autor:
Kim, Z., Vlahacos, C. P., Hoffman, J. E., Grover, J. A., Voigt, K. D., Cooper, B. K., Ballard, C. J., Palmer, B. S., Hafezi, M., Taylor, J. M., Anderson, J. R., Dragt, A. J., Lobb, C. J., Orozco, L. A., Rolston, S. L., Wellstood, F. C.
Publikováno v:
AIP Advances 1, 042107 (2011)
We describe a thin-film superconducting Nb microwave resonator, tunable to within 0.3 ppm of the hyperfine splitting of $^{87}$Rb at $f_{Rb}=6.834683$ GHz. We coarsely tuned the resonator using electron-beam lithography, decreasing the resonance freq
Externí odkaz:
http://arxiv.org/abs/1109.5205
Autor:
Hoffman, J. E., Grover, J. A., Kim, Z., Wood, A. K., Anderson, J. R., Dragt, A. J., Hafezi, M., Lobb, C. J., Orozco, L. A., Rolston, S. L., Taylor, J. M., Vlahacos, C. P., Wellstood, F. C.
Publikováno v:
J. E. Hoffman et. al Rev. Mex. F\'{\i}s. {\bf 57} (3) 1-5 (2011)
We present a scheme to couple trapped $^{87}$Rb atoms to a superconducting flux qubit through a magnetic dipole transition. We plan to trap atoms on the evanescent wave outside an ultrathin fiber to bring the atoms to less than 10 $\mu$m above the su
Externí odkaz:
http://arxiv.org/abs/1108.4153
Publikováno v:
Phys. Rev. Lett. 102, 097002 (2009)
We present an atomic resolution scanning tunneling spectroscopy study of superconducting BaFe$_{1.8}$Co$_{0.2}$As$_2$ single crystals in magnetic fields up to $9 \text{Tesla}$. At zero field, a single gap with coherence peaks at $\overline{\Delta}=6.
Externí odkaz:
http://arxiv.org/abs/0810.1048
Publikováno v:
Appl. Phys. Lett. 93, 172514 (2008).
We report controlled local manipulation of single vortices by low temperature magnetic force microscope (MFM) in a thin film of superconducting Nb. We are able to position the vortices in arbitrary configurations and to measure the distribution of lo
Externí odkaz:
http://arxiv.org/abs/0810.0790