# Dynamically enhanced unconventional superconducting correlations in a Hubbard ladder

## TL;DR

This paper demonstrates how Floquet driving can significantly enhance unconventional superconducting correlations in a Hubbard ladder, with potential applications in solid-state and cold atomic systems.

## Contribution

The study introduces a theoretical method to boost superconducting pairing in a Hubbard ladder using Floquet modulation, monitored by advanced DMRG techniques.

## Key findings

- Superconducting correlations increased by about tenfold.
- Floquet drive effectively reduces tunneling along the ladder rungs.
- Method applicable to both solid-state and cold atomic systems.

## Abstract

We propose theoretically how unconventional superconducting pairing in a repulsively interacting Hubbard ladder can be enhanced via the application of a Floquet driving. Initially the Hubbard ladder is prepared in its charge-density-wave dominated ground state. A periodic Floquet drive is applied which modulates oppositely the energy offset of the two chains and effectively reduces the tunneling along the rungs. This modulation of the energy offsets might be caused by the excitation of a suitable phononic mode in solids or a superlattice modulation in cold atomic gases. We use state-of-the-art density matrix renormalization group methods to monitor the resulting real-time dynamics of the system. We find an enormous enhancement of the unconventional superconducting pair correlations by approximately one order of magnitude.