A 2 × 2 quantum dot array with controllable inter-dot tunnel couplings
A 2 × 2 quantum dot array with controllable inter-dot tunnel couplings
The interaction between electrons in arrays of electrostatically defined quantum dots is naturally described by a Fermi-Hubbard Hamiltonian. Moreover, the high degree of tunability of these systems makes them a powerful platform to simulate different regimes of the Hubbard model. However, most quantum dot array implementations have been limited to …