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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C12030 - Relativistic Quantum Information - 2012PODCAST Subscribe to podcast

Relativistic Quantum Information

Organizer(s): Robert Mann   Achim Kempf   Markus Mueller  

Collection URL: http://pirsa.org/C12030

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The Quest for Localization
Speaker(s): Juan Leon
Abstract: This talk aims to review the obstacles met in QFT to reach an appropriate definition for such a basic concept as localization. The anti-local character of the square root of the "- Laplace-Beltrami + mass^2" operator prevents the existence of localized states with a finite number of quanta... read more
Date: 25/06/2012 - 9:10 am

Entanglement of a Relativistic Field in the Vacuum State
Speaker(s): Benni Reznik
Abstract: We discuss gedanken experiments for measuring local and non-local observables in QFT that
respect causality, and can by used to test the entanglement between two spatially distant regions in the vacuum. It is shown that the entanglement decays exponentially with the distance between the... read more
Date: 25/06/2012 - 9:50 am

Physical Results with Fermions in RQI
Speaker(s): Miguel Montero
Abstract: A number of works in the field of relativistic quantum information have been devoted to the study of entanglement on certain simple families of Unruh-mode entangled states in non-inertial frames. In the fermionic case remarkable results such as the survival of entanglement at infinite accelera... read more
Date: 25/06/2012 - 11:00 am

Quantum Teleportation from Alice to Rob in Vacuum
Speaker(s): Shih-Yuin Lin
Abstract: We consider quantum teleportation of continuous variables in a relativistic system with the Unruh-DeWitt detectorscoupled to a common quantum field initially in the Minkowski vacuum. An unknown coherent state of an Unruh-DeWitt detector is teleported from one inertial agent (Alice) to an almos... read more
Date: 25/06/2012 - 11:20 am

Geometric Discord in Non-Inertial Frames
Speaker(s): Eric Brown
Abstract: I review the recent work performed on computing the geometric discord in non-inertial frames. We consider the well-known case of an inertially maximally entangled state shared by inertial Alice and non-inertial Robb. It is found that for high accelerations the geometric discord decays to a ... read more
Date: 25/06/2012 - 11:40 am

Tripartite Entanglement, Svetlichny Inequalities, and Non-inertial Observers
Speaker(s): Robert Mann
Abstract: I discuss the behaviour of bipartite and tripartite non-locality between fermionic entangled states shared by observers, one of whom uniformly accelerates. Although fermionic entanglement persists for arbitrarily large acceleration, the Bell/CHSH inequalities cannot be violated for suffici... read more
Date: 25/06/2012 - 2:00 pm

Boundary Effects on Quantum Entanglement and its Dynamics in a Detector-Field System
Speaker(s): Rong Zhou
Abstract: We analyze an exactly solvable model consisting of an inertial Unruh-DeWitt detector which interacts linearly with a massless quantum field in Minkowski spacetime with a perfectly reflecting flat plane boundary. This model is related to proposed mirror-field superposition and relevant ... read more
Date: 25/06/2012 - 2:40 pm

Towards Universal Quantum Computation Out of Relativistic Motion of Particle Detectors
Speaker(s): David Aasen
Abstract:
Date: 25/06/2012 - 3:40 pm

Nonlocality, Entanglement Witnesses and Supra-Correlations
Speaker(s): Paul Alsing
Abstract: While entanglement is believed to underlie the power of quantum computation and communication, it is not generally well understood for multipartite systems. Recently, it has been appreciated that there exists proper no-signaling probability distributions derivable from operators t... read more
Date: 25/06/2012 - 4:00 pm

Quantum Interference of “Clocks”
Speaker(s): Caslav Brukner
Abstract: Experimental tests of general relativity performed so far involve systems that can be effectively described by classical physics. On the other hand, observed gravity effects on quantum systems do not go beyond the Newtonian limit of the theory. In light of the conceptual differences betwee... read more
Date: 26/06/2012 - 9:00 am

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