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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Giulio Chiribella


PIRSA:18040157  ( MP4 Medium Res , MP3 , PDF ) Which Format?
A second-quantized Shannon theory
Speaker(s): Giulio Chiribella
Abstract: In quantum Shannon theory, the way information is encoded and decoded takes advantage of the laws of quantum mechanics, while the way communication channels are interlinked is assumed to be classical. In this talk, I will relax the assumption that quantum channels are combined classically, and I wil... read more
Date: 24/04/2018 - 3:30 pm

PIRSA:18040122  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Quantum speedup in testing causal hypotheses
Speaker(s): Giulio Chiribella
Abstract: An important ingredient of the scientific method is the ability to test alternative hypotheses on the causal relations relating a given set of variables. In the classical world, this task can be achieved with a variety of statistical, information-theoretic, and computational techniques. In this talk... read more
Date: 09/04/2018 - 11:30 am

PIRSA:18040089  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Agents, Subsystems, and the Conservation of Information
Speaker(s): Giulio Chiribella
Abstract: Dividing the world into subsystems is an important component of the scientific method. The choice of subsystems, however, is not defined a priori. Typically, it is dictated by our experimental capabilities, and, in general, different agents may have different capabilities. Here we propose a construc... read more
Date: 06/04/2018 - 10:30 am

PIRSA:17070042  ( MP4 Medium Res , MP3 , PDF ) Which Format?
A physical picture for quantum contextuality
Speaker(s): Giulio Chiribella
Abstract:
Date: 25/07/2017 - 2:00 pm

PIRSA:15050072  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Towards an information-theoretic foundation of (quantum) thermodynamics
Speaker(s): Giulio Chiribella
Abstract: In the classical world of Newton and Laplace, fundamental physics and thermodynamics do not blend well: the former puts forward a picture of nature where states are pure and processes are fundamentally reversible, while the latter deals with scenarios where states are mixed and processes are irrever... read more
Date: 11/05/2015 - 11:15 am

PIRSA:14110151  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Purity Without Probability
Speaker(s): Giulio Chiribella
Abstract: Pure states and pure transformations play a crucial role in most of the recent reconstructions of quantum theory. In the frameworks of general probabilistic theories, purity is defined in terms of probabilistic mixtures and bears an intuitive interpretation of ``maximal knowledge" of the state of th... read more
Date: 27/11/2014 - 11:00 am

PIRSA:12030111  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Quantum Switches and Impossible Time Travels
Speaker(s): Giulio Chiribella
Abstract: This talk presents two results on the interplay between causality and quantum information flow. First I will discuss about the task of switching the connections among quantum gates in a network. In ordinary quantum circuits, gates are connected in a fixed causal sequence.  However, we can i... read more
Date: 06/03/2012 - 3:30 pm

PIRSA:11100104  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
The Pure and Reversible Pictures of Quantum Mechanics
Speaker(s): Giulio Chiribella
Abstract:
Date: 14/10/2011 - 1:30 pm

PIRSA:11050030  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Opening Welcome
Speaker(s): Giulio Chiribella
Abstract:
Date: 09/05/2011 - 9:20 am

PIRSA:10020070  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Purity and reversibility as a paradigm for Quantum Information Processing
Speaker(s): Giulio Chiribella
Abstract: In this talk I will report on a recent work [arXiv:0908.1583], which investigates general probabilistic theories where every mixed state has a purification, unique up to reversible channels on the purifying system. The purification principle is equivalent to the existence of a reversible realization... read more
Date: 02/02/2010 - 4:00 pm

PIRSA:08120039  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Admissible transformations of quantum networks and their applications in quantum information processing
Speaker(s): Giulio Chiribella
Abstract: Quantum operations are known to be the most general state transformations that can be applied to parts of compound systems compatibly with the probabilistic structure of quantum mechanics. What about the most general transformations of quantum operations? It turns out that any such general transform... read more
Date: 12/12/2008 - 2:00 pm
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