We introduce a novel measure for the quantum property of “nonstabilizerness”—commonly
known as “magic”—by considering the Rényi entropy of the probability distribution …

Abstract Variational Quantum Algorithms (VQAs) and Quantum Machine Learning (QML)
models train a parametrized quantum circuit to solve a given learning task. The success of …

We investigate the connection between quantum resources and extractable work in
quantum batteries. We demonstrate that quantum coherence in the battery or the battery …

We show that out-of-time-order correlators (OTOCs) constitute a probe for local-operator
entanglement (LOE). There is strong evidence that a volumetric growth of LOE is a faithful …

Ground states of quantum many-body systems are both entangled and possess a kind of
quantum complexity, as their preparation requires universal resources that go beyond the …

Stabilizer entropies (SE) measure deviations from stabilizer resources and as such are a
fundamental ingredient for quantum advantage. In particular, the interplay of SE and …

In this work, we show how the resource theory of nonstabilizerness quantifies the hardness
of direct fidelity estimation protocols. In particular, the resources needed for a direct fidelity …

It is well known that a quantum circuit on $ N $ qubits composed of Clifford gates with the
addition of $ k $ non Clifford gates can be simulated on a classical computer by an algorithm …

Notions of nonstabilizerness, or “magic,” quantify how nonclassical quantum states are in a
precise sense: states exhibiting low nonstabilizerness preclude quantum advantage. We …

Scrambling of quantum information is an important feature at the root of randomization and
benchmarking protocols, the onset of quantum chaos, and black-hole physics. Unscrambling …