831 citations · 8k across the 103 of their papers we have counts for
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Limitations of Passive Protection of Quantum Information
Fernando Pastawski, Alastair Kay, Norbert Schuch +1
The ability to protect quantum information from the effect of noise is one of the major goals of quantum information processing. In this article, we study limitations on the asympt…
Matrix Product State and mean field solutions for one-dimensional systems can be found efficiently
Norbert Schuch, J. Ignacio Cirac
We consider the problem of approximating ground states of one-dimensional quantum systems within the two most common variational ansatzes, namely the mean field ansatz and Matrix P…
Entanglement of the Antisymmetric State
Matthias Christandl, Norbert Schuch, Andreas Winter
We analyse the entanglement of the antisymmetric state in dimension d x d and present two main results. First, we show that the amount of secrecy that can be extracted from the sta…
How long can a quantum memory withstand depolarizing noise?
Fernando Pastawski, Alastair Kay, Norbert Schuch +1
We investigate the possibilities and limitations of passive Hamiltonian protection of a quantum memory against depolarizing noise. Without protection, the lifetime of a single qubi…
Fermionic Projected Entangled Pair States
Christina V. Kraus, Norbert Schuch, Frank Verstraete +1
We introduce a family of states, the fPEPS, which describes fermionic systems on lattices in arbitrary spatial dimensions. It constitutes the natural extension of another family of…