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arXiv · 2401.17884

Exact Dynamics and Shortcuts to Adiabaticity in the Tomonaga-Luttinger Liquid

Léonce Dupays·Balázs Dóra·Adolfo del Campo
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Abstract

Controlling many-body quantum systems is a highly challenging task required to advance quantum technologies. Here, we report progress in controlling gapless many-body quantum systems described by the Tomonaga-Luttinger liquid (TLL). To do so, we investigate the exact dynamics of the TLL induced by an interaction quench, making use of the $SU(1,1)$ dynamical symmetry group and the Schr\"odinger picture. First, we demonstrate that this approach is useful to perform a shortcut to adiabaticity, that cancels the final non-adiabatic residual energy of the driven TLL and is experimentally implementable in the semiclassical limit of the sine-Gordon model. Second, we apply this framework to analyze various driving schemes in finite time, including linear ramps and smooth protocols.

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Léonce Dupays, Balázs Dóra, Adolfo del Campo. 2024-01-31. Exact Dynamics and Shortcuts to Adiabaticity in the Tomonaga-Luttinger Liquid. https://doi.org/10.1103/physrevb.110.155104

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