Merging dipolar supersolids in a double-well potential

Li, Hui; Halperin, Eli; Ronen, Shai; Bohn, John L.

doi:10.1103/physreva.109.013307

Phys. Rev. A

2024

DOI: 10.1103/physreva.109.013307

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Merging dipolar supersolids in a double-well potential

Hui Li,

Eli Halperin,

Shai Ronen

et al.

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2024

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Cited by 1 publication

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Dynamic instabilities and turbulence of merged rotating Bose–Einstein condensates

Sivakumar,

Mishra,

Hujeirat

et al. 2024

Physics of Fluids

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We present the simulation results of merging harmonically confined rotating Bose–Einstein condensates in two dimensions. Merging of the condensate is triggered by positioning the rotation axis at the trap minima and moving both condensates toward each other while slowly ramping their rotation frequency. We analyze the dynamics of the merged condensate by letting them evolve under a single harmonic trap. We systematically investigate the formation of solitonic and vortex structures in the final, unified condensate, considering both nonrotating and rotating initial states. In both cases, merging leads to the formation of solitons that decay into vortex pairs through snake instability, and subsequently, these pairs annihilate. Soliton formation and decay-induced phase excitations generate sound waves, more pronounced when the merging time is short. We witness no sound wave generation at sufficiently longer merging times that finally leads to the condensate reaching its ground state. With rotation, we notice off-axis merging (where the rotation axes are not aligned), leading to the distortion and weakening of soliton formation. The incompressible kinetic energy spectrum exhibits a Kolmogorov-like cascade [E(k)∼k−5/3] in the initial stage for merging condensates rotating above a critical frequency and a Vinen-like cascade [E(k)∼k−1] at a later time for all cases. Our findings hold potential significance for atomic interferometry, continuous atomic lasers, and quantum sensing applications.

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Dynamic instabilities and turbulence of merged rotating Bose–Einstein condensates

Sivakumar,

Mishra,

Hujeirat

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

show abstract

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Merging dipolar supersolids in a double-well potential

Cited by 1 publication

References 76 publications

Dynamic instabilities and turbulence of merged rotating Bose–Einstein condensates

Dynamic instabilities and turbulence of merged rotating Bose–Einstein condensates

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