Testing integrability with a single bit of quantum information
release_k2h3ktxsuzctbkugf4yvy6rk7q
by
David Poulin,
Raymond Laflamme,
G.J. Milburn,
Juan Pablo Paz
2003
Abstract
We show that deterministic quantum computing with a single bit (DQC1) can
determine whether the classical limit of a quantum system is chaotic or
integrable using O(N) physical resources, where N is the dimension of the
Hilbert space of the system under study. This is a square root improvement over
all known classical procedures. Our study relies strictly on the random matrix
conjecture. We also present numerical results for the nonlinear kicked top.
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