Coffee, tea and cookies will be available in G1B31 (across from G1B20) from 3:30–3:50 p.m.
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Abstract: Quantum-based electronics is an accelerating technology, where information is encoded in the quantum mechanical states of coupled superconducting circuits. To unlock the 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 discuss the basic requirements of such protected superconducting qubits, and present a universal method to describe arbitrary quantum circuits based on the connection between symplectic geometry and graph theory. In the second part of the talk, we present preliminary results on how to use disordered superconductors to open the way to building superconducting qubits with protection against information loss. In particular, we focus on elements built from disordered WSi which has shown excellent properties in single photon detectors.