Supersolid phases of ultracold bosons trapped in optical lattices dressed with Rydberg 
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Barbier, Mathieu; Lütjeharms, Henrik; Hofstetter, Walter

doi:10.1103/physreva.105.013326

Cited by 6 publications

(3 citation statements)

References 43 publications

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“…By this, mean-field phase diagrams with non-diagonal terms become computable for the long-range interactions and a whole zoo of phenomena such as supersolids [94,105] or pair superfluids [106] can be investigated in the context of long-range interactions. Further, mean-field studies of soft-core bosons would benefit through the application of our framework [59,66,86]. Related to this, the investigation of metastable states for the full long-range interaction in the atomic limit on the level of mean fields is within reach with our framework [86].…”

Section: Discussionmentioning

confidence: 89%

“…Important experimental platforms for the realisation of long-range interacting lattice models in a controlled environment are, among others, trapped ions interacting with optical potentials [37][38][39][40][41][42][43][44][45][46][47][48][49] and neutral atoms [50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66] as well as polar molecules [67][68][69] in optical lattices. Both platforms can realise effective long-range Ising or X Y -type spin interactions, making them viable quantum simulators for long-range magnetic models.…”

Section: Introductionmentioning

confidence: 99%

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Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions

et al. 2023

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We propose a general approach to analyse diagonal ordering patterns in bosonic lattice models with algebraically decaying density-density interactions on arbitrary lattices. The key idea is a systematic search for the energetically best order on all unit cells of the lattice up to a given extent. Using resummed couplings we evaluate the energy of the ordering patterns in the thermodynamic limit using finite unit cells. We apply the proposed approach to the atomic limit of the extended Bose-Hubbard model on the triangular lattice at fillings f=1/2f=1/2 and f=1f=1. We investigate the ground-state properties of the antiferromagnetic long-range Ising model on the triangular lattice and determine a six-fold degenerate plain-stripe phase to be the ground state for finite decay exponents. We also probe the classical limit of the Fendley-Sengupta-Sachdev model describing Rydberg atom arrays. We focus on arrangements where the atoms are placed on the sites or links of the Kagome lattice. Our method provides a general framework to treat cristalline structures resulting from long-range interactions.

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Section: Discussionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions

et al. 2023

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“…The short-range interaction is usually referred to as a hard-core interaction, which can be modulated by using the Feshbach resonance with a tunable time-dependent magnetic field [6,7]; while the long-range one can be realized through dipole-dipole and Rydberg interactions, which can be regulated by magnetic fields [8] and the Rydberg dressing technology [9][10][11], respectively. Compared with the hard-core contact interaction, where the interaction potential will tend to infinity when the atoms are infinitely close, the long-range Rydberg interaction potential no longer tends to infinity, making the Rydberg-dressed ultracold atomic system an ideal platform for exploring exotic quantum phases displaying simultaneously different types of order [12][13][14][15][16][17][18]. Previous studies have shown that when the long-range isotropic Rydberg interaction is strong enough, the roton gap is gradually closed, leading to spontaneous breaking of translational symmetry, which provides another way for the experimental formation of supersolids [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Ground state of Rydberg-dressed Bose gas confined in a toroidal trap

Wang,

Yang,

Liu

et al. 2024

Commun. Theor. Phys.

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The experimental realization of Rydberg dressing technology in ultracold atomic systems provides another superior platform for studying novel states of matter and macroscopic quantum phenomena. In this work, based on the mean-field theory, we have investigated the ground-state phases of a two-component Bose-Einstein condensate with Rydberg interaction and confined in a toroidal trap. The effects of Rydberg interaction and external potential, especially the Rydberg blockade radius, on the ground-state structure of such a system have been investigated in full parameter space. Our results show that the Rydberg blockade radius, which can be regarded as another controllable parameter, can be used to obtain a variety of ground-state phases. More interestingly, it is found that for weak Rydberg interaction, the Rydberg blockade radius breaks the spontaneous rotational symmetry of the system, leading to the formation of a discrete unit cell structure. For strongly interacting cases, it can be used to realize different order of discrete rotational symmetry breaking.

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n-changing population of Rydberg states by low-energy electron–Rydberg collisions

Li,

Fang,

Zhou

et al. 2024

The Journal of Chemical Physics

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Inelastic n-changing collisions play an important role in the evolution of Rydberg atoms into ultracold plasmas. However, for the initially intermediate n (n ∼ 40) Rydberg states, these collisions can hardly be observed due to the low electron temperature in ultracold plasmas. In this work, we designed an experimental scheme to facilitate collisions between free electrons at 1.5 eV and intermediate n Rydberg atoms. Using the field ionization technique, we measured the state distributions resulting from the evolution of initially cold rubidium atoms in the 45P3/2 Rydberg state. The experimentally obtained probability of inelastic collisions excitation agrees well with the Monte Carlo simulation results. In addition, our experimental results indicate that the n-changing population induced by hot electrons is significant for lower nP Rydberg states. Our work plays a significant role in calculating the rates of electron–ion three-body recombination in ultracold plasmas.

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Supersolid phases of ultracold bosons trapped in optical lattices dressed with Rydberg p states

Cited by 6 publications

References 43 publications

Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions

Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions

Ground state of Rydberg-dressed Bose gas confined in a toroidal trap

n-changing population of Rydberg states by low-energy electron–Rydberg collisions

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