Hartmut Neven

Barren plateaus in quantum neural network training landscapes

Many experimental proposals for noisy intermediate scale quantum devices involve training a parameterized quantum circuit with a classical optimization loop. Such hybrid quantum...

A blueprint for demonstrating quantum supremacy with superconducting qubits

Scaling up to supremacy Quantum information scientists are getting closer to building a quantum computer that can perform calculations that a classical computer cannot. It has b...

Characterizing quantum supremacy in near-term devices

Efficient population transfer via non-ergodic extended states in quantum spin glass

We analyze a new computational role of coherent multi-qubit quantum tunneling that gives rise to bands of non-ergodic extended (NEE) quantum states each formed by a superpositio...