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9 papers · 2 filters
On the efficiency of nonlocal gates generation
Berry Groisman, Benni Reznik
We propose and study a method for using non-maximally entangled states to implement probabilistically non-local gates. Unlike distillation-based protocols, this method does not gen…
On the quantum, classical and total amount of correlations in a quantum state
Berry Groisman, Sandu Popescu, Andreas Winter
We give an operational definition of the quantum, classical and total amount of correlations in a bipartite quantum state. We argue that these quantities can be defined via the amo…
Efficient Quantum Circuits for Schur and Clebsch-Gordan Transforms
Dave Bacon, Isaac Chuang, Aram Harrow
The Schur basis on n d-dimensional quantum systems is a generalization of the total angular momentum basis that is useful for exploiting symmetry under permutations or collective u…
Optimal superdense coding of entangled states
Anura Abeyesinghe, Patrick Hayden, Graeme Smith +1
We present a one-shot method for preparing pure entangled states between a sender and a receiver at a minimal cost of entanglement and quantum communication. In the case of prepari…
Aspects of generic entanglement
Patrick Hayden, Debbie W. Leung, Andreas Winter
We study entanglement and other correlation properties of random states in high-dimensional bipartite systems. These correlations are quantified by parameters that are subject to t…
Lower bound on the number of Toffoli gates in a classical reversible circuit through quantum information concepts
Sandu Popescu, Berry Groisman, Serge Massar
The question of finding a lower bound on the number of Toffoli gates in a classical reversible circuit is addressed. A method based on quantum information concepts is proposed. The…