Self-Evaporation Dynamics of Quantum Droplets in a 41K-87Rb Mixture

Fort, C.; Modugno, Michèle

doi:10.3390/app11020866

Cited by 25 publications

(11 citation statements)

References 35 publications

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“…1 the results of a numerical calculation of f (z, u, x) and the result of using the approximate expression Eq. ( 46 approximates that expected for homo-nuclear binary mixtures of 39 K under feasible experimental conditions [3,4] (a aa = a bb = 48.57a 0 , a ab = −51.86a 0 ), or hetero-nuclear binary mixtures of 41 K and 87 Rb, also under feasible experimental conditions [6] (a KK = 62.0a 0 , a RbRb = 100.4a 0 and a KRb = −82.0a 0 ). Notice the small relative value of the imaginary part of f with respect to the real one; this fact is frequently used to consider a Hermitean EGPE obtained by just neglecting the imaginary terms derived from f .…”

Section: Extended Gross Pitaevskii Equation For Binary Mixtures Of Bo...supporting

confidence: 63%

“…Experimental results have already been reported for mixtures of 41 K and 87 Rb [6], for scattering lengths a KK = 62.0a 0 , a RbRb = 100.4a 0 , respectively. In those experiments, the interspecies scattering length was explored in the interval a KRb (−95, −72)a 0 , and the observed binary mixtures satisfy N (Rb) /N (K) ∼ 1.15.…”

Section: Extended Gross Pitaevskii Equation For Binary Mixtures Of Bo...mentioning

confidence: 76%

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Weber number and the outcome of binary collisions between quantum droplets

Alba-Arroyo¹,

Caballero-Benítez²,

Jauregui³

2022

Preprint

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Section: Extended Gross Pitaevskii Equation For Binary Mixtures Of Bo...supporting

confidence: 63%

Section: Extended Gross Pitaevskii Equation For Binary Mixtures Of Bo...mentioning

confidence: 76%

Weber number and the outcome of binary collisions between quantum droplets

Alba-Arroyo¹,

Caballero-Benítez²,

Jauregui³

2022

Preprint

View full text Add to dashboard Cite

“…Their self evaporation due to lossy inelastic collisions [7,9] that prevent droplet observation at long timescales, has also been considered. This is a process that can be delayed using heteronuclear mixtures [10,17] or supressed using one-dimensional (1D) settings [18,19]. These recent developments clearly underscore the relevance of such structures in a wide range of theoretical and experimental studies and their interest in quantifying the interplay between mean-field and quantum effects.…”

Section: Introductionmentioning

confidence: 99%

Formation and quench of homonuclear and heteronuclear quantum droplets in one dimension

Mistakidis,

Mithun,

Kevrekidis

et al. 2021

Preprint

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We exemplify the impact of beyond Lee-Huang-Yang (LHY) physics, especially due to intercomponent correlations, in the ground state and the quench dynamics of one-dimensional so-called quantum droplets using an ab-initio nonperturbative approach. It is found that the droplet Gaussian-shaped configuration arising for intercomponent attractive couplings becomes narrower for stronger intracomponent repulsion and transits towards a flat-top structure either for larger particle numbers or weaker intercomponent attraction. Additionally, a harmonic trap prevents the flat-top formation. At the balance point where mean-field interactions cancel out, we show that quantum fluctuations prevent the collapse of LHY fluids for larger atom numbers and a correlation hole is present in the few particle limit of these fluids as well as for flat-top droplets. Introducing mass-imbalance, droplets experience intercomponent mixing and excitation signatures are identified for larger masses. Monitoring the droplet expansion (breathing motion) upon considering interaction quenches to stronger (weaker) attractions we explicate that beyond LHY correlations result in a reduced velocity (breathing frequency). Strikingly, the droplets feature two-body anti-correlations (correlations) at the same position (longer distances). Our findings pave the way for probing correlation-induced phenomena of droplet dynamics in current ultracold atom experiments.

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“…The life-time of droplets is limited by three-body losses, but in heteronuclear mixtures of 87 Rb and 41 K [13] it might exceed 100 ms [14], which is much longer than the life-time of two-component homonuclear mixtures. Therefore experiments with hetero-nuclear droplets [13] pave a way towards long-lived binary droplets which in turn opens the possibility to study dynamical situations, such as collisions.…”

mentioning

confidence: 98%

Manifestation of relative phase in dynamics of two interacting Bose-Bose droplets

Pylak¹,

Gampel²,

Płodzień³

et al. 2021

Preprint

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We study coherent dynamics of two interacting Bose-Bose droplets by means of the extended Gross-Pitaevskii equation. The relative motion of the droplets couples to the phases of their components. The dynamics can be understood in terms of the evolution of zero-energy modes recovering symmetries spontaneously broken by the mean field solution. A phase-dependent interaction potential and Josephson-junction-like equations are introduced to explain the observed behaviour. We show that the evolution of the droplets is a macroscopic manifestation of the hidden dynamics of their phases. The ocurrence of non-dissipative drag between the two supercurrents (Andreev-Bashkin effect) is discussed.

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Self-Evaporation Dynamics of Quantum Droplets in a 41K-87Rb Mixture

Cited by 25 publications

References 35 publications

Weber number and the outcome of binary collisions between quantum droplets

Weber number and the outcome of binary collisions between quantum droplets

Formation and quench of homonuclear and heteronuclear quantum droplets in one dimension

Manifestation of relative phase in dynamics of two interacting Bose-Bose droplets

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