Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Geiger, Zachary A."'
Autor:
Singh, Kevin, Fujiwara, Cora J., Geiger, Zachary A., Simmons, Ethan Q., Lipatov, Mikhail, Cao, Alec, Dotti, Peter, Rajagopal, Shankari V., Senaratne, Ruwan, Shimasaki, Toshihiko, Heyl, Markus, Eckardt, André, Weld, David M.
Publikováno v:
Phys. Rev. X 9, 041021 (2019)
The use of periodic driving for synthesizing many-body quantum states depends crucially on the existence of a prethermal regime, which exhibits drive-tunable properties while forestalling the effects of heating. This motivates the search for direct e
Externí odkaz:
http://arxiv.org/abs/1809.05554
Autor:
Fujiwara, C. J., Singh, Kevin, Geiger, Zachary A., Senaratne, Ruwan, Rajagopal, Shankari, Lipatov, Mikhail, Weld, David M.
Publikováno v:
Phys. Rev. Lett. 122, 010402 (2019)
We report Floquet band engineering of long-range transport and direct imaging of Floquet-Bloch bands in an amplitude-modulated optical lattice. In one variety of Floquet-Bloch band we observe tunable rapid long-range high-fidelity transport of a Bose
Externí odkaz:
http://arxiv.org/abs/1806.07858
Autor:
Geiger, Zachary A., Fujiwara, Kurt M., Singh, Kevin, Senaratne, Ruwan, Rajagopal, Shankari V., Lipatov, Mikhail, Shimasaki, Toshihiko, Driben, Rodislav, Konotop, Vladimir V., Meier, Torsten, Weld, David M.
Publikováno v:
Phys. Rev. Lett. 120, 213201 (2018)
We report the direct observation and characterization of position-space Bloch oscillations using an ultracold gas in a tilted optical lattice. While Bloch oscillations in momentum space are a common feature of optical lattice experiments, the real-sp
Externí odkaz:
http://arxiv.org/abs/1803.02456
Autor:
Fujiwara, Kurt M., Geiger, Zachary A., Singh, Kevin, Senaratne, Ruwan, Rajagopal, Shankari V., Lipatov, Mikhail, Shimasaki, Toshihiko, Weld, David M.
Publikováno v:
New J. Phys. 20, 063027 (2018)
We report the experimental study of a harmonic oscillator in the relativistic regime. The oscillator is composed of Bose-condensed lithium atoms in the third band of an optical lattice, which have an energy-momentum relation nearly identical to that
Externí odkaz:
http://arxiv.org/abs/1712.09501
Autor:
Senaratne, Ruwan, Rajagopal, Shankari V., Shimasaki, Toshihiko, Dotti, Peter E., Fujiwara, Kurt M., Singh, Kevin, Geiger, Zachary A., Weld, David M.
Publikováno v:
Nature Communications 9, 2065 (2018)
Ultrafast electronic dynamics are typically studied using pulsed lasers. We demonstrate a complementary experimental approach: quantum simulation of ultrafast dynamics using trapped ultracold atoms. Counter-intuitively, this technique emulates some o
Externí odkaz:
http://arxiv.org/abs/1711.02654
Autor:
Rajagopal, Shankari V., Fujiwara, Kurt M., Senaratne, Ruwan, Singh, Kevin, Geiger, Zachary A., Weld, David M.
Ultracold atomic physics experiments offer a nearly ideal context for the investigation of quantum systems far from equilibrium. We describe three related emerging directions of research into extreme non-equilibrium phenomena in atom traps: quantum e
Externí odkaz:
http://arxiv.org/abs/1705.04309
Autor:
Senaratne, Ruwan, Rajagopal, Shankari V., Geiger, Zachary A., Fujiwara, Kurt M., Lebedev, Vyacheslav, Weld, David M.
We present a simple and inexpensive design for a multichannel effusive oven nozzle which provides improved atomic beam collimation and thus extended oven lifetimes. Using this design we demonstrate an atomic lithium source suitable for trapped-atom e
Externí odkaz:
http://arxiv.org/abs/1407.6391
Akademický článek
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Akademický článek
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Autor:
Geiger, Zachary Adam
Publikováno v:
Geiger, Zachary Adam. (2017). An Apparatus for Dynamical Quantum Emulation Using Ultracold Lithium. 0035: Physics. Retrieved from: http://www.escholarship.org/uc/item/9d68f80q
Quantum emulation of extreme non-equilibrium phenomena is a natural application of the precision and control of ultracold atomic physics experiments. In particular, ``Floquet engineering" with an explicitly time-dependent Hamiltonian enables the crea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______325::7055106235e198acf3553646641e77f6
http://www.escholarship.org/uc/item/9d68f80q
http://www.escholarship.org/uc/item/9d68f80q