Pseudospin orders in the supersolid phases in binary Rydberg-dressed Bose-Einstein condensates

Hsueh, C.-H.; Tsai, Yu Lin; Wu, King‐Jean; Chang, M.-S.; Wu, Weixing

doi:10.1103/physreva.88.043646

Cited by 34 publications

(20 citation statements)

References 34 publications

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“…As mentioned earlier, Rydberg-dressed BEC is a promising system for observing the SS state 37 – 41 . Here, based on the Gross-Pitaevskii equation (GPE) numerical simulation, we study the quantum hydrodynamics coupled to a coherent structure in a trapped 2D Rydberg-dressed BEC.…”

Section: Gross-pitaevskii Equationmentioning

confidence: 89%

“…Recently SS states have been realized in a BEC coupled to the modes of two optical cavities 35 and in a BEC with spin-orbit coupling 36 . Another promising candidate for the SS state is the Rydberg-dressed atomic BEC that exhibits a defocusing soft-core interaction 37 – 41 . In such a system, the interaction between the Rydberg-dressed ground-state atoms behaves as: with the particle number, the defocusing interaction strength, R c the blockade radius, and the relative position of two particles.…”

Section: Introductionmentioning

confidence: 99%

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Turbulence in a matter-wave supersolid

Hsueh

Tsai

Horng

et al. 2018

Sci Rep

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Quantum turbulence associated with wave and vortex dynamics is numerically investigated for a two-dimensional trapped atomic Rydberg-dressed Bose-Einstein condensate (BEC). When the coupling constant of the soft-core interaction is over a critical value, the superfluid (SF) system can transition into a hexagonal supersolid (SS) state. Based on the Gross-Pitaevskii equation approach, we have discovered a new characteristic k−13/3 scaling law for wave turbulence in the SS state, that coexists with the waveaction k−1/3 and energy k−1 cascades commonly existing in a SF BEC. The new k−13/3 scaling law implies that the SS system exhibits a negative, minus-one power energy dispersion (E ~ k−1) at the wavevector consistent with the radius of the SS droplet. For vortex turbulence, in addition to the presence of the Kolmogorov energy k−5/3 and Saffman enstrophy k−4 cascades, it is found that large amount of independent vortices and antivortices pinned to the interior of the oscillating SS results in a strong k−1 scaling at the wavevector consistent with the SS lattice constant.

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Section: Gross-pitaevskii Equationmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Turbulence in a matter-wave supersolid

Hsueh

Tsai

Horng

et al. 2018

Sci Rep

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“…For the lattice structure here, if we replace the site index by the atom species inside, i.e., j = A, we will have j ± 1 = B and j ± 2 = A. It is also worth noting that the assumption of two-species atoms can be equivalent to a scheme of same ground-state atoms excited to two different Rydberg hyperfine states [22].…”

Section: Scheme and Master Equationmentioning

confidence: 99%

“…However, things will be quite different for the heterospecies case. Here the heterospecies case could be two Rydberg atoms of different atomic species or two same species atoms occupied in different Rydberg hyperfine states [22]. The different excitation frequencies would disrupt the Rydberg blockade mechanism as well as those phases existing in the single-species case.…”

Section: Introductionmentioning

confidence: 99%

Dynamical phases in a one-dimensional chain of heterospecies Rydberg atoms with next-nearest-neighbor interactions

et al. 2015

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We theoretically investigate the dynamical phase diagram of a one-dimensional chain of laserexcited two-species Rydberg atoms. The existence of a variety of unique dynamical phases in the experimentally-achievable parameter region is predicted under the mean-field approximation, and the change of those phases when the effect of the next-nearest neighbor interaction is included is further discussed. In particular we find the competition of the strong Rydberg-Rydberg interactions and the optical excitation imbalance can lead to the presence of complex multiple chaotic phases, which are highly sensitive to the initial Rydberg-state population and the strength of the nextnearest neighbor interactions.

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“…In the case of weak coupling with Ω ↑,↓ ≪ ∆, the ground states are dressed by the effective soft-core long-range potential U ij (r) =C = Ω 2 i Ω 2 j 16∆ 4 C 6 (i, j =↑, ↓) characterizes the interaction strength and R c = (C 6 /2h∆) 1/6 represents the blockade radius with C 6 = 9.7 × 10 20 a.u. being the van der Waals coefficient of the 60S 1/2 Rydberg state [28,29]. For a condensate with about N = 2 × 10 6 atoms, the soft-core long-range interaction parameters used in Fig.…”

mentioning

confidence: 99%

Chiral Supersolid in Spin-Orbit-Coupled Bose Gases with Soft-Core Long-Range Interactions

et al. 2018

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Chirality represents a kind of symmetry breaking characterized by the noncoincidence of an object with its mirror image and has been attracting intense attention in a broad range of scientific areas. The recent realization of spin-orbit coupling in ultracold atomic gases provides a new perspective to study quantum states with chirality. In this Letter, we demonstrate that the combined effects of spin-orbit coupling and interatomic soft-core long-range interaction can induce an exotic supersolid phase in which the chiral symmetry is broken with spontaneous emergence of circulating particle current. This implies that a finite angular momentum can be generated with neither rotation nor effective magnetic field. The direction of the angular momentum can be altered by adjusting the strength of spin-orbit coupling or interatomic interaction. The predicted chiral supersolid phase can be experimentally observed in Rydberg-dressed Bose-Einstein condensates with spin-orbit coupling.

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Pseudospin orders in the supersolid phases in binary Rydberg-dressed Bose-Einstein condensates

Cited by 34 publications

References 34 publications

Turbulence in a matter-wave supersolid

Turbulence in a matter-wave supersolid

Dynamical phases in a one-dimensional chain of heterospecies Rydberg atoms with next-nearest-neighbor interactions

Chiral Supersolid in Spin-Orbit-Coupled Bose Gases with Soft-Core Long-Range Interactions

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