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- University of WaterlooCA37 papers
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- École Normale Supérieure de LyonFR5 papers
- Laboratoire de Physique de l'ENS de LyonFR5 papers
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16 papers · 2 filters
A Separation between Divergence and Holevo Information for Ensembles
Rahul Jain, Ashwin Nayak, Yi Su
The notion of divergence information of an ensemble of probability distributions was introduced by Jain, Radhakrishnan, and Sen in the context of the ``substate theorem''. Since th…
Quantum weak coin flipping with arbitrarily small bias
Carlos Mochon
"God does not play dice. He flips coins instead." And though for some reason He has denied us quantum bit commitment. And though for some reason he has even denied us strong coin f…
Non-locality, Contextuality and Transition sets
Hans Westman
We discuss quantum non-locality and contextuality using the notion of transition sets. This approach provides a way to obtain a direct logical contradiction with locality/non-conte…
Quantum-limited metrology with product states
Sergio Boixo, Animesh Datta, Steven T. Flammia +3
We study the performance of initial product states of n-body systems in generalized quantum metrology protocols that involve estimating an unknown coupling constant in a nonlinear…
Generic local distinguishability and completely entangled subspaces
Jonathan Walgate, A. J. Scott
A subspace of a multipartite Hilbert space is completely entangled if it contains no product states. Such subspaces can be large with a known maximum size, S, approaching the full…
Quantum phase transition using quantum walks in an optical lattice
C. M. Chandrashekar, Raymond Laflamme
We present an approach using quantum walks (QWs) to redistribute ultracold atoms in an optical lattice. Different density profiles of atoms can be obtained by exploiting the contro…