5 papers
Causally constrained quantum operator dynamics
Marcell D. Kovács, Marcell D. Kovács, Christopher J. Turner +2
This paper explores a route to non-ergodic quantum dynamics where algebraic restrictions in operator space arise from local constraints on the causal light cone. We model this thro…
High-rate and computationally-efficient seedless extractors for device-independent quantum cryptography
Simone Lin, Cameron Foreman, Lluis Masanes
Device-independent (DI) quantum cryptography provides secure cryptography with minimal trust in, or characterisation of, the used quantum devices. An essential component of DI prot…
Operator space fragmentation in perturbed Floquet-Clifford circuits
Marcell D. Kovács, Christopher J. Turner, Lluis Masanes +1
Floquet quantum circuits are able to realise a wide range of non-equilibrium quantum states, exhibiting quantum chaos, topological order and localisation. In this work, we investig…
Seedless extractors for device-independent quantum cryptography
Cameron Foreman, Lluis Masanes
Device-independent (DI) quantum cryptography aims at providing secure cryptography with minimal trust in, or characterisation of, the underlying quantum devices. A key step in DI p…
Fundamental charges for dual-unitary circuits
Tom Holden-Dye, Lluis Masanes, Arijeet Pal
Dual-unitary quantum circuits have recently attracted attention as an analytically tractable model of many-body quantum dynamics. Consisting of a 1+1D lattice of 2-qudit gates arra…