Towards new circuit elements for protected superconducting qubits

Abstract: Quantum-based electronics is a rapidly accelerating technology, where information is encoded in the quantum mechanical states of coupled natural or artificial atoms. To unlock the exceptional potential of quantum computers, one of the key challenges that the field has to overcome is to preserve the coherence of a quantum superposition over extended times. Besides implementing quantum error correction schemes, a complementary approach to prolong the coherence of quantum processors is to develop qubits that are intrinsically protected against decoherence. In this talk, we present ideas and preliminary results on how to use various quantum materials that can open the way to building superconducting qubits with protection against information loss. In particular, we focus on disordered superconductors and semiconductor-based hybrid superconducting devices.