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Tuesday, September 13, 2011 12:00 pm - 1:00 pm EDT (GMT -04:00)

Daniel Terno: Some discord about non-locality

Daniel Terno, Macquarie University

Abstract

I start from a quick overview of the popular definitions of the discord and their physical interpretation in terms of various Maxwell's demons. Then I present a case for discord not telling anything about the local distinguishability, but being useful for understanding of by-local gates.

Tuesday, August 16, 2011 12:00 pm - 1:00 pm EDT (GMT -04:00)

Vladimir Korepin: Entanglement in quantum spin chains

Vladimir Korepin, Stony Brook

Abstract

The main subject of the lecture is entanglement spectrum. After a short introduction the author will consider density matrix of a large block of spins on infinite lattice. The spectrum will be compared for the cases of Heisenberg chain and VBS states. Potential applications will be discussed.

Thursday, August 4, 2011 12:00 pm - 1:00 pm EDT (GMT -04:00)

John Calsamiglia: Local vs Collective measurements in statistical inference

John Calsamiglia, Universitat Autònoma de Barcelona

Abstract

I will present three problems in quantum statistical inference that all stem from the difference between local and collective measurements on multipartite states.

The first one is that of hiding a secret direction in a multipartite state with the promise that the parties cannot learn the direction if they perform local operations and classical communication, but can accurately retrieve it if they perform collective measurements.