Binary Quantum Turbulence Arising from Countersuperflow Instability in Two-Component Bose-Einstein Condensates

TL;DR

This paper investigates how counter-superflow instability in two-component Bose-Einstein condensates leads to quantum turbulence, demonstrating vortex nucleation and isotropic turbulence formation through numerical simulations.

Contribution

It provides a theoretical and numerical analysis of binary quantum turbulence arising from countersuperflow instability in Bose-Einstein condensates, suggesting experimental realization.

Findings

Counter-superflow becomes unstable above a critical velocity.

Quantized vortices nucleate, leading to turbulence.

Binary turbulence can be experimentally realized.

Abstract

We theoretically study the development of quantum turbulence from two counter-propagating superfluids of miscible Bose-Einstein condensates by numerically solving the coupled Gross-Pitaevskii equations. When the relative velocity exceeds a critical value, the counter-superflow becomes unstable and quantized vortices are nucleated, which leads to isotropic quantum turbulence consisting of two superflows. It is shown that the binary turbulence can be realized experimentally in a trapped system.