9 citations · 32 across the 14 of their papers we have counts for
7 papers · 1 filter
Quantum Fragmentation
Yiqiu Han, Oliver Hart, Alexey Khudorozhkov +1
We introduce a systematic protocol for constructing quantum Hilbert-space-fragmented Hamiltonians, whose Krylov-sector structure, unlike in classically fragmented models, can be fu…
Profusion of Symmetry-Protected Qubits from Stable Ergodicity Breaking
Thomas Iadecola, Rahul Nandkishore
We show how combining a discrete symmetry with topological Hilbert space fragmentation can give rise to exponentially many topologically stable qubits protected by a single discret…
Many-body contextuality and self-testing quantum matter via nonlocal games
Oliver Hart, David T. Stephen, Evan Wickenden +1
Contextuality is arguably the fundamental property that makes quantum mechanics different from classical physics. It is responsible for quantum computational speedups in both magic…
Braiding for the win: Harnessing braiding statistics in topological states to win quantum games
Oliver Hart, David T. Stephen, Dominic J. Williamson +1
Nonlocal quantum games provide proof of principle that quantum resources can confer advantage at certain tasks. They also provide a compelling way to explore the computational util…
Exact analytic toolbox for quantum dynamics with tunable noise strength
Mert Okyay, Oliver Hart, Rahul Nandkishore +1
We introduce a framework that allows for the exact analytic treatment of quantum dynamics subject to coherent noise. The noise is modeled via unitary evolution under a Hamiltonian…
Many-body quantum catalysts for transforming between phases of matter
David T. Stephen, Rahul Nandkishore, Jian-Hao Zhang
A catalyst is a substance that enables otherwise impossible transformations between states of a system, without being consumed in the process. In this work, we apply the notion of…
Playing nonlocal games across a topological phase transition on a quantum computer
Oliver Hart, David T. Stephen, Dominic J. Williamson +2
Many-body quantum games provide a natural perspective on phases of matter in quantum hardware, crisply relating the quantum correlations inherent in phases of matter to the securin…