3 citations · 3 across the 11 of their papers we have counts for
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Optimal Lower Bound for Ground-State Energy Estimation with a Guiding State
Rolando D. Somma, Ronald de Wolf
The guided Hamiltonian problem is the following: given access to the unitary for some Hamiltonian , and given access to a unitary that prepares a guiding state promi…
Optimal tomography of bosonic and fermionic Gaussian states
Senrui Chen, Marco Fanizza, Filippo Girardi +4
The sample complexity is the minimum number of copies required to learn an accurate classical description of a quantum state. Bosonic and fermionic Gaussian quantum states are fami…
Approximate QCAs in one dimension using approximate algebras
Daniel Ranard, Michael Walter, Freek Witteveen
Quantum cellular automata (QCAs) are automorphisms of tensor product algebras that preserve locality, with local quantum circuits as a simple example. We study approximate QCAs, wh…
A random purification channel for arbitrary symmetries with applications to fermions and bosons
Michael Walter, Freek Witteveen
The random purification channel maps n copies of any mixed quantum state to n copies of a random purification of the state. We generalize this construction to arbitrary symmetries:…
Adiabatic preparation of many-body quantum states: getting the beginning and ending right
Emil T. M. Pedersen, Freek Witteveen, Klaus Mølmer +1
We present numerical calculations, and simulations performed on a Rydberg atom quantum simulator, of the adiabatic evolution of many-body quantum systems around a quantum phase tra…
Limits to black-box amplification in QMA
Scott Aaronson, Phillip Harris, Freek Witteveen
We study the limitations of black-box amplification in the quantum complexity class QMA. Amplification is known to boost any inverse-polynomial gap between completeness and soundne…