Quantum information scrambling in a trapped-ion quantum simulator with tunable range interactions

Autor: Benoît Vermersch, Christian F. Roos, M. K. Joshi, Andreas Elben, Peter Zoller, Tiff Brydges, Rainer Blatt, Christine Maier

Publikováno v: Phys.Rev.Lett.
Phys.Rev.Lett., 2020, 124 (24), pp.240505. ⟨10.1103/PhysRevLett.124.240505⟩
Physical Review Letters

In ergodic many-body quantum systems, locally encoded quantum information becomes, in the course of time evolution, inaccessible to local measurements. This concept of "scrambling" is currently of intense research interest, entailing a deep understan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d55ce4a5777a1b2db80008d1aaefc5b
https://hal.archives-ouvertes.fr/hal-02475262

Polarization-gradient cooling of 1D and 2D ion Coulomb crystals

Autor: M K Joshi, A Fabre, C Maier, T Brydges, D Kiesenhofer, H Hainzer, R Blatt, C F Roos

Publikováno v: New Journal of Physics

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=r3c4b2081b22::a9c60de84fb72bbb44482e7bd2f912f9

Population dynamics in sideband cooling of trapped ions outside the Lamb-Dicke regime

Autor: P. Hrmo, V. Jarlaud, F. Oehl, M. K. Joshi, Richard C. Thompson

Publikováno v: Joshi, M K, Hrmo, P, Jarlaud, V, Oehl, F & Thompson, R C 2019, ' Population dynamics in sideband cooling of trapped ions outside the Lamb-Dicke regime ', Physical Review A, vol. 99, no. 1, 013423 . https://doi.org/10.1103/PhysRevA.99.013423

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 $\mathrm{[}{\ensuremath{\eta}}^{2}(2\ensuremath{\la

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc791d89eb5dbd04e900a72127d47f84
https://pure.au.dk/portal/da/publications/population-dynamics-in-sideband-cooling-of-trapped-ions-outside-the-lambdicke-regime(329462d7-12ed-43c3-825d-87d77cddc44f).html

Coherence properties of highly-excited motional states of a trapped ion

Autor: P. Hrmo, Richard C. Thompson, M. K. Joshi, V. Jarlaud

Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 54:015501

We present a study of the coherence properties of a variety of motional states of a single ion confined in a Penning ion trap. We demonstrate that the motion of the ion has a coherence time of the order of one second, using Ramsey interferometry. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e363fa1732579dcb159c1efea0eff08c
https://doi.org/10.1088/1361-6455/abc271

Influence of a geometrical perturbation on the ion dynamics in a 3D Paul trap

Autor: M. K. Joshi, Pushpa M. Rao, K.T. Satyajit

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 800:111-118

In ion traps, the purity of the Quadrupole potential is essential. Any perturbations in potential caused by geometrical imperfections or the presence of other ions alter the dynamics of trapped ions. In this paper the effect of a particular perturbat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93c5484cdeab4ebecbc93ae8415f70ac
https://doi.org/10.1016/j.nima.2015.07.046