Zobrazeno 1 - 10
of 119
pro vyhledávání: '"JOSHI, M. K."'
Autor:
Hainzer, H., Kiesenhofer, D., Ollikainen, T., Bock, M., Kranzl, F., Joshi, M. K., Yoeli, G., Blatt, R., Gefen, T., Roos, C. F.
Ramsey interferometry is a widely used tool for precisely measuring transition frequencies between two energy levels of a quantum system, with applications in time-keeping, precision spectroscopy, quantum optics, and quantum information. Often, the c
Externí odkaz:
http://arxiv.org/abs/2203.12656
Autor:
Joshi, M. K., Kranzl, F., Schuckert, A., Lovas, I., Maier, C., Blatt, R., Knap, M., Roos, C. F.
Publikováno v:
Science 376, 720 (2022)
Identifying universal properties of non-equilibrium quantum states is a major challenge in modern physics. A fascinating prediction is that classical hydrodynamics emerges universally in the evolution of any interacting quantum system. Here, we exper
Externí odkaz:
http://arxiv.org/abs/2107.00033
Autor:
Joshi, M. K., Fabre, A., Maier, C., Brydges, T., Kiesenhofer, D., Hainzer, H., Blatt, R., Roos, C. F.
Publikováno v:
New J. Phys. 22, 103013 (2020)
We present experiments on polarization gradient cooling of Ca$^+$ multi-ion Coulomb crystals in a linear Paul trap. Polarization gradient cooling of the collective modes of motion whose eigenvectors have overlap with the symmetry axis of the trap is
Externí odkaz:
http://arxiv.org/abs/2006.15104
Publikováno v:
Phys. Rev. A 100, 043414 (2019)
Doppler and sideband cooling are long standing techniques that have been used together to prepare trapped atomic ions in their ground state of motion. In this paper we study how these techniques can be extended to cool both radial modes of motion of
Externí odkaz:
http://arxiv.org/abs/1907.02406
Publikováno v:
Phys. Rev. A 99, 013423 (2019)
We present the results of simulations of optical sideband cooling of atomic ions in a trap with a shallow potential well. In such traps, an ion cannot be Doppler cooled near to the Lamb-Dicke regime ($\eta^2(2n+1) \ll 1$). Outside the Lamb-Dicke regi
Externí odkaz:
http://arxiv.org/abs/1809.02848
Publikováno v:
J Mod Opt 65, 549-559 (2018)
We have recently demonstrated the laser cooling of a single $^{40}$Ca$^+$ ion to the motional ground state in a Penning trap using the resolved-sideband cooling technique on the electric quadrupole transition S$_{1/2} \leftrightarrow$ D$_{5/2}$. Here
Externí odkaz:
http://arxiv.org/abs/1705.08518
Akademický článek
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Autor:
Ahmed, B., Alner, G. J., Araujo, H., Barton, J. C., Bewick, A., Carson, M. J., Davidge, D., Dawson, J. V., Gamble, T., Hart, S. P., Hollingworth, R., Howard, A. S., Jones, W. G., Joshi, M. K., Kudryavtsev, V. A., Lawson, T. B., Lebedenko, V., Lehner, M. J., Lewin, J. D., Lightfoot, P. K., Liubarsky, I., Luscher, R., McMillan, J. E., Morgan, B., Nicklin, G., Paling, S. M., Preece, R. M., Quenby, J. J., Roberts, J. W., Robinson, M., Smith, N. J. T., Smith, P. F., Spooner, N. J. C., Sumner, T. J., Tovey, D. R.
Publikováno v:
Astropart.Phys.19:691-702,2003
The NAIAD experiment (NaI Advanced Detector) for WIMP dark matter searches at Boulby mine (UK) is described. The detector consists of an array of encapsulated and unencapsulated NaI(Tl) crystals with high light yield. Six crystals are collecting data
Externí odkaz:
http://arxiv.org/abs/hep-ex/0301039
Autor:
Kudryavtsev, V. A., Spooner, N. J. C., Lightfoot, P. K., Roberts, J. W., Lehner, M. J., Gamble, T., Carson, M. J., Lawson, T. B., Luscher, R., McMillan, J. E., Morgan, B., Paling, S. M., Robinson, M., Tovey, D. R., Smith, N. J. T., Smith, P. F., Alner, G. J., Hart, S. P., Lewin, J. D., Preece, R. M., Sumner, T. J., Jones, W. G., Quenby, J. J., Ahmed, B., Bewick, A., Davidge, D., Dawson, J. V., Howard, A. S., Ivaniouchenkov, I., Joshi, M. K., Lebedenko, V., Liubarsky, I., Barton, J. C., Gerbier, G., Mallet, J., Mosca, L., Tao, C.
Publikováno v:
Astropart.Phys.17:401-408,2002
The status of dark matter searches with inorganic scintillator detectors at Boulby mine is reviewed and the results of tests with a CsI(Tl) crystal are presented. The objectives of the latter experiment were to study anomalous fast events previously
Externí odkaz:
http://arxiv.org/abs/hep-ex/0109013
The first high solar latitude pass of the Ulysses spacecraft revealed the presence of MeV particle increases up to latitudes above 60 degrees, well outside the CIR belt but associated in time with the regular passage of these plasma interfaces at mor
Externí odkaz:
http://arxiv.org/abs/physics/0011064