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Article
Open AccessEmpowering deep neural quantum states through efficient optimization
Computing the ground state of interacting quantum matter is a long-standing challenge, especially for complex two-dimensional systems. Recent developments have highlighted the potential of neural quantum state...
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Article
Open AccessQuantum Fisher information measurement and verification of the quantum Cramér–Rao bound in a solid-state qubit
The quantum Cramér–Rao bound sets a fundamental limit on the accuracy of unbiased parameter estimation in quantum systems, relating the uncertainty in determining a parameter to the inverse of the quantum Fish...
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Article
Open AccessMeasuring a dynamical topological order parameter in quantum walks
Quantum processes of inherent dynamical nature, such as quantum walks, defy a description in terms of an equilibrium statistical physics ensemble. Until now, identifying the general principles behind the under...
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Article
Open AccessDigital quantum simulation, Trotter errors, and quantum chaos of the kicked top
This work aims at giving Trotter errors in digital quantum simulation (DQS) of collective spin systems an interpretation in terms of quantum chaos of the kicked top. In particular, for DQS of such systems, reg...
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Article
Open AccessThe Kibble-Zurek mechanism at exceptional points
Exceptional points (EPs) are ubiquitous in non-Hermitian systems, and represent the complex counterpart of critical points. By driving a system through a critical point at finite rate induces defects, describe...
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Article
Measuring multipartite entanglement through dynamic susceptibilities
Entanglement is considered an essential resource in quantum technologies, and central to the understanding of quantum many-body physics. Develo** protocols to detect and quantify the entanglement of many-par...
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Article
Real-time dynamics of lattice gauge theories with a few-qubit quantum computer
A digital quantum simulation of a lattice gauge theory is performed on a quantum computer that consists of a few trapped-ion qubits; the model simulated is the Schwinger mechanism, which describes the creation...
