Tunable Valley Splitting and Bipolar Operation in Graphene Quantum Dots
Tunable Valley Splitting and Bipolar Operation in Graphene Quantum Dots
Quantum states in graphene are four-fold degenerate: two fold in spins, and two fold in valleys.Both degrees of freedom can be utilized for qubit preparations. In our bilayer graphene quantumdots, we demonstrate that the valley g-factorgv, defined analogously as the spin g-factorgsforvalley splitting in perpendicular magnetic field, is tunable by …