Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Eto, Yujiro"'
Publikováno v:
Phys. Rev. A 100, 063610 (2019)
The interaction between atoms in a two-component Bose-Einstein condensate (BEC) is effectively modulated by the Rabi oscillation. This periodic modulation of the effective interaction is shown to generate Faraday patterns through parametric resonance
Externí odkaz:
http://arxiv.org/abs/1907.03945
Publikováno v:
Phys. Rev. A 99, 013622 (2019)
We demonstrate modulation of the effective interaction between the magnetic sublevels of the hyperfine spin $F=1$ in a $^{87}$Rb Bose-Einstein condensate by Rabi coupling with radio-frequency (rf) field. The use of the $F=1$ manifold enables us to ob
Externí odkaz:
http://arxiv.org/abs/1812.01284
Akademický článek
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Autor:
Eto, Yujiro, Shibayama, Hitoshi, Shibata, Kosuke, Torii, Aki, Nabeta, Keita, Saito, Hiroki, Hirano, Takuya
Publikováno v:
Phys. Rev. Lett. 122, 245301 (2019)
Dissipation affects all real-world physical systems and often induces energy or particle loss, limiting the efficiency of processes. Dissipation can also lead to the formation of dissipative structures or induce quantum decoherence. Quantum decoheren
Externí odkaz:
http://arxiv.org/abs/1809.00768
Publikováno v:
Phys. Rev. A 97, 023622 (2018)
We investigate the ground-state phases of a mixture of spin-1 and spin-2 Bose-Einstein condensates at zero magnetic field. In addition to the intra-spin interactions, two spin-dependent interaction coefficients are introduced to describe the inter-sp
Externí odkaz:
http://arxiv.org/abs/1712.05111
Publikováno v:
Phys. Rev. A 97, 021602 (2018)
The spinor dynamics of Bose-Einstein condensates of 87Rb atoms with hyperfine spins 1 and 2 were investigated. A technique of simultaneous Ramsey interferometry was developed for individual control of the vectors of two spins with almost the same Zee
Externí odkaz:
http://arxiv.org/abs/1707.02660
The non-equilibrium spatial dynamics in a two-component Bose-Einstein condensate were excited by controlled miscible-immiscible transition, in which immiscible condensates with domain structures are transferred to the miscible condensates by changing
Externí odkaz:
http://arxiv.org/abs/1512.01331
Autor:
Eto, Yujiro, Takahashi, Masahiro, Nabeta, Keita, Okada, Ryotaro, Kunimi, Masaya, Saito, Hiroki, Hirano, Takuya
Publikováno v:
Phys. Rev. A 93, 033615 (2016)
We investigate dynamic properties of bouncing and penetration in colliding binary and ternary Bose-Einstein condensates comprised of different Zeeman or hyperfine states of 87Rb. Through the application of magnetic field gradient pulses, two- or thre
Externí odkaz:
http://arxiv.org/abs/1511.01624
Publikováno v:
Phys. Rev. A 92, 013611 (2015)
We investigate flow properties of immiscible Bose-Einstein condensates composed of two different Zeeman spin states of 87Rb. Spatially overlapping two condensates in the optical trap are prepared by application of a resonant radio frequency pulse, an
Externí odkaz:
http://arxiv.org/abs/1505.04882
We generate spin currents in an $^{87}$Rb spin-2 Bose-Einstein condensate by application of a magnetic field gradient. The spin current destroys the spin polarization, leading to a sudden onset of two-body collisions. In addition, the spin coherence,
Externí odkaz:
http://arxiv.org/abs/1405.0347