Geometric phases in superconducting qubits beyond the two-level approximation
Geometric phases in superconducting qubits beyond the two-level approximation
Geometric phases, which accompany the evolution of a quantum system and depend only on its trajectory in state space, are commonly studied in two-level systems. Here, however, we study the adiabatic geometric phase in a weakly anharmonic and strongly driven multi-level system, realised as a superconducting transmon-type circuit. We measure …