Zobrazeno 1 - 10
of 287
pro vyhledávání: '"van Bijnen, R."'
Autor:
Natale, G., van Bijnen, R. M. W., Patscheider, A., Petter, D., Mark, M. J., Chomaz, L., Ferlaino, F.
Publikováno v:
Phys. Rev. Lett. 123, 050402 (2019)
We study the spectrum of elementary excitations of a dipolar Bose gas in a three-dimensional anisotropic trap across the superfluid-supersolid phase transition. Theoretically, we show that, when entering the supersolid phase, two distinct excitation
Externí odkaz:
http://arxiv.org/abs/1907.01986
Autor:
Chomaz, L., Petter, D., Ilzhöfer, P., Natale, G., Trautmann, A., Politi, C., Durastante, G., van Bijnen, R. M. W., Patscheider, A., Sohmen, M., Mark, M. J., Ferlaino, F.
Publikováno v:
Phys. Rev. X 9, 021012 (2019)
By combining theory and experiments, we demonstrate that dipolar quantum gases of both $^{166}$Er and $^{164}$Dy support a state with supersolid properties, where a spontaneous density modulation and a global phase coherence coexist. This paradoxical
Externí odkaz:
http://arxiv.org/abs/1903.04375
Autor:
Petter, D., Natale, G., van Bijnen, R. M. W., Patscheider, A., Mark, M. J., Chomaz, L., Ferlaino, F.
Publikováno v:
Phys. Rev. Lett. 122, 183401 (2019)
We measure the excitation spectrum of a stable dipolar Bose--Einstein condensate over a wide momentum-range via Bragg spectroscopy. We precisely control the relative strength, $\epsilon_{\rm dd}$, of the dipolar to the contact interactions and observ
Externí odkaz:
http://arxiv.org/abs/1811.12115
Autor:
van Bijnen, R. M. W., Pohl, T.
Publikováno v:
Phys. Rev. Lett. 114, 243002 (2015)
We devise a cold-atom approach to realizing a broad range of bi-linear quantum magnets. Our scheme is based on off-resonant single-photon excitation of Rydberg $P$-states (Rydberg-dressing), whose strong interactions are shown to yield controllable X
Externí odkaz:
http://arxiv.org/abs/1411.3118
Autor:
van Bijnen, R. M. W., Ravensbergen, C., Bakker, D. J., Dijk, G. J., Kokkelmans, S. J. J. M. F., Vredenbregt, E. J. D.
Publikováno v:
New J. Phys. 17 (2015) 023045
We demonstrate the ability to excite atoms at well-defined, programmable locations in a magneto-optical trap, either to the continuum (ionisation), or to a Rydberg state. To this end, excitation laser light is shaped into arbitrary intensity patterns
Externí odkaz:
http://arxiv.org/abs/1407.6856
Publikováno v:
Phys. Rev. Lett. 111, 170402 (2013)
We perform a theoretical study into how dipole-dipole interactions modify the properties of superfluid vortices within the context of a two-dimensional atomic Bose gas of co-oriented dipoles. The reduced density at a vortex acts like a giant anti-dip
Externí odkaz:
http://arxiv.org/abs/1310.3640
We present a generalized approach to compute the shape and internal structure of two-dimensional nematic domains. By using conformal mappings, we are able to compute the director field for a given domain shape that we choose from a rich class, which
Externí odkaz:
http://arxiv.org/abs/1202.6563
Autor:
van Bijnen, R. M. W., Smit, S., van Leeuwen, K. A. H., Vredenbregt, E. J. D., Kokkelmans, S. J. J. M. F.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 44 (2011) 184008
Ultracold atomic gases have been used extensively in recent years to realize textbook examples of condensed matter phenomena. Recently, phase transitions to ordered structures have been predicted for gases of highly excited, 'frozen' Rydberg atoms. S
Externí odkaz:
http://arxiv.org/abs/1103.2096
Autor:
Taylor, L. B., van Bijnen, R. M. W., O'Dell, D. H. J., Parker, N. G., Kokkelmans, S. J. J. M. F., Martin, A. M.
Publikováno v:
Phys. Rev A 84, 021604(R) (2011)
Engineering of synthetic magnetic flux in Bose-Einstein condensates [Lin et al., Nature {\bf 462}, 628 (2009)] has prospects for attaining the high vortex densities necessary to emulate the fractional quantum Hall effect. We analytically establish th
Externí odkaz:
http://arxiv.org/abs/1011.4315
Autor:
van Bijnen, R. M. W., Parker, N. G., Kokkelmans, S. J. J. M. F., Martin, A. M., O'Dell, D. H. J.
Publikováno v:
Phys. Rev. A 82, 033612 (2010)
We present a general method for obtaining the exact static solutions and collective excitation frequencies of a trapped Bose-Einstein condensate (BEC) with dipolar atomic interactions in the Thomas-Fermi regime. The method incorporates analytic expre
Externí odkaz:
http://arxiv.org/abs/1003.0371