Remote

Abstract: What is called "orthodox'' quantum mechanics, as presented in standard foundational discussions, relies on two substantive assumptions --- the projection postulate and the eigenvalue-eigenvector link --- that do not in fact play any part in practical applications of quantum mechanics. I argue for this conclusion on a number of grounds, but primarily on the grounds that the projection postulate fails correctly to account for repeated, continuous and unsharp measurements (all of which are standard in contemporary physics) and that the eigenvalue-eigenvector link implies that...

Join the PQI Director and Staff for a social hour on Friday, June 26 from 2-3pm (click here to join)!
 

We'll be using the platform Online Town to host a meet-up in a virtual PQI office. We won't have any food, but come chat and tell us about the trials of the spring semester, your plans for getting back into lab, how PQI could help with anything, the latest video game, or just pop in to casually see who's around. We'll be there.

In building a full-scale QPU, problems of decoherence, scaling, manufacturability, and networking can be solved by using photons as the computational qubits. This also causes some interesting new problems, such as how to wrangle them. Starting with the notation from the Octopus Book, we'll go a bit further, to look at ridiculously-complicated graph states and measurement-based computation. Then we'll go much further, outlining a rough design for a scalable, fault-tolerant photonic QPU.

Bio: Eric R. Johnston ("EJ") (U.C. Berkeley EECS '92) is co-...

Following a round of remote judging, the 15 highest scored undergraduates, graduate students, and postdocs will present for a live audience. PQI members that are not presenting or judging are invited to stream the event on pqi.org/pqi2020.

The lecture will be livestreamed from our PQI YouTube channel [click here] and questions from the audience will be collected via the YouTube live channel chat and asked at the end.

Lecture abstract: The Coherent Ising Machine (CIM) is an emerging unconventional computing architecture for non-convex optimization....

Zoom link

Abstract: What does everyday copper, high temperature superconductors, magic angle graphene, doped silicon semiconductors, and the quark gluon plasma have in common? All of them, in some regime, are controlled...