56 citations · 95 across the 9 of their papers we have counts for
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Causality from the spectrum: Emergence of causal order from process-matrix mereology
Varun Kushwaha, Nicolas Loizeau, Alexei Grinbaum +1
In Hamiltonian systems, the only basis-independent quantity is the spectrum. Given a spectrum, quantum mereology seeks preferred tensor-product decompositions into local subsystems…
Opening Krylov space to access all-time dynamics via dynamical symmetries
Nicolas Loizeau, Berislav Buča, Dries Sels
Solving short and long time dynamics of closed quantum many-body systems is one of the main challenges of both atomic and condensed matter physics. For locally interacting closed s…
Quantum many-body simulations with PauliStrings.jl
Nicolas Loizeau, J. Clayton Peacock, Dries Sels
We present the Julia package PauliStrings ( https://github.com/nicolasloizeau/PauliStrings.jl ) for quantum many-body simulations, which performs fast operations on the Pauli group…
Quantum mereology and subsystems from the spectrum
Nicolas Loizeau, Dries Sels
The minimal ingredients to describe a quantum system are a Hamiltonian, an initial state, and a preferred tensor product structure that encodes a decomposition into subsystems. We…
Unveiling Order from Chaos by approximate 2-localization of random matrices
Nicolas Loizeau, Flaviano Morone, Dries Sels
Quantum many-body systems are typically endowed with a tensor product structure. This structure is inherited from probability theory, where the probability of two independent event…
Channel capacity enhancement with indefinite causal order
Nicolas Loizeau, Alexei Grinbaum
Classical communication capacity of a channel can be enhanced either through a device called a 'quantum switch' or by putting the channel in a quantum superposition. The gains in t…