5 papers
Probing eigenstate thermalization in quantum simulators via fluctuation-dissipation relations
Alexander Schuckert, Michael Knap
The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems. So far, however, experimental studi…
Non-local emergent hydrodynamics in a long-range quantum spin system
Alexander Schuckert, Izabella Lovas, Michael Knap
Generic short-range interacting quantum systems with a conserved quantity exhibit universal diffusive transport at late times. We employ non-equilibrium quantum field theory and se…
Many-body chaos near a thermal phase transition
Alexander Schuckert, Michael Knap
We study many-body chaos in a (2+1)D relativistic scalar field theory at high temperatures in the classical statistical approximation, which captures the quantum critical regime an…
Optically Controlled Entangling Gates in Randomly Doped Silicon
Eleanor Crane, Thomas Crane, Nguyen H. Le +2
Randomly-doped silicon has many competitive advantages for quantum computation; not only is it fast to fabricate but it could naturally contain high numbers of qubits and logic gat…
Non-equilibrium Quantum Spin Dynamics from 2PI Functional Integral Techniques in the Schwinger Boson Representation
A. Schuckert, A. Piñeiro Orioli, J. Berges
We present a non-equilibrium quantum field theory approach to the initial-state dynamics of spin models based on two-particle irreducible (2PI) functional integral techniques. It e…