From ferrini at chalmers.se Wed Sep 1 09:50:38 2021 From: ferrini at chalmers.se (Giulia Ferrini) Date: Wed, 1 Sep 2021 07:50:38 +0000 Subject: [All.non-board.wacqt] research seminar by Alexandru Gheorghiu September 23rd at 11h Message-ID: <8f5b430851774361b1bf369412bdcd7f@chalmers.se> Dear all, On Thursday 23rd September at 11h we will have a seminar by Alexandru Gheorghiu, Junior Research Fellow at the Institute for Theoretical Studies of ETH Zürich, on "Efficient proofs of quantumness for near-term devices" (abstract below). We have booked Kollektorn (which has a capacity limited to 40 people) but we will also broadcast the seminar online: https://chalmers.zoom.us/j/4086414001 Password: 8h811s Alexandru will visit 23rd and 24th of September and please feel free to contact me in case you wish to discuss with him. I apologise if you receive this email twice. Bests, Giulia Abstract: Groups at Google and USTC recently showed that small-scale quantum computers can outperform classical computers at specific tasks. Unfortunately, checking the results of these experiments takes exponential time and so is inefficient. Quantum computations for which the results can be verified efficiently are known (called proofs of quantumness), but these usually require circuits of high depth which are not suitable for noisy, near-term devices. In this talk, I present some recent results that aim to bridge the gap between these two extremes. Specifically, I'll outline how one can design proofs of quantumness that only require circuits of constant quantum depth. I will also discuss a recent proof-of-principle demonstration on an ion quantum computer. Lastly, I'll talk about some of the open problems concerning proofs of quantumness and how these relate to interesting questions in complexity theory. The talk will be mainly based around these results: https://arxiv.org/abs/2107.02163 https://meetings.aps.org/Meeting/DAMOP21/Session/C10.3 --------------------------------------------------------------------------- Giulia Ferrini Department of Microtechnology and Nanoscience - MC2 Chalmers University of Technology S-412 96 Göteborg Sweden -------------- next part -------------- En HTML-bilaga skiljdes ut... URL: From goran.l.johansson at chalmers.se Fri Sep 10 15:28:25 2021 From: goran.l.johansson at chalmers.se (=?utf-8?B?R8O2cmFuIEpvaGFuc3Nvbg==?=) Date: Fri, 10 Sep 2021 13:28:25 +0000 Subject: [All.non-board.wacqt] The WACQT Lab Course - 2021 edition - Lund Lab Homepage up and running Message-ID: Dear WACQT Researchers, This mail is to remind you that the WACQT Lab Course 2021 soon starts: https://www.chalmers.se/en/centres/wacqt/graduate%20school/lc%20autumn%202021/Pages/default.aspx *** This course is mandatory for all WACQT PhD students *** (You only have to do each Lab once, so if you did it in 2019, you can relax. :-)) The first Lab is in Lund September 27-29 and the corresponding homepage with all needed information is now up and running: https://www.atomic.physics.lu.se/education/elective-courses/wacqt-lab-course/ Please make sure that you book travel and lodging so that you can be in Lund for the whole lab! During next week, we?ll figure out what is the most straightforward administrative way for you to register, but for you can already start making your travel arrangements if you like. This mail is also to inform the supervisors that this course is taking place. With this I wish you a very good weekend! Cheers Göran From ferrini at chalmers.se Thu Sep 23 09:20:39 2021 From: ferrini at chalmers.se (Giulia Ferrini) Date: Thu, 23 Sep 2021 07:20:39 +0000 Subject: [All.non-board.wacqt] research seminar by Alexandru Gheorghiu today at 11h In-Reply-To: <8f5b430851774361b1bf369412bdcd7f@chalmers.se> References: <8f5b430851774361b1bf369412bdcd7f@chalmers.se> Message-ID: <2f21433483084c0f9e7347baa51963eb@chalmers.se> Dear all, this is just a friendly reminder for the seminar by Alexandru Gheorghiu, Junior Research Fellow at the Institute for Theoretical Studies of ETH Zürich, on "Efficient proofs of quantumness for near-term devices" (abstract below). The seminar takes place today at 11h. We have booked Kollektorn (which has a capacity limited to 40 people) but we will also broadcast the seminar online: https://chalmers.zoom.us/j/4086414001 Password: 8h811s Bests, Giulia Abstract: Groups at Google and USTC recently showed that small-scale quantum computers can outperform classical computers at specific tasks. Unfortunately, checking the results of these experiments takes exponential time and so is inefficient. Quantum computations for which the results can be verified efficiently are known (called proofs of quantumness), but these usually require circuits of high depth which are not suitable for noisy, near-term devices. In this talk, I present some recent results that aim to bridge the gap between these two extremes. Specifically, I'll outline how one can design proofs of quantumness that only require circuits of constant quantum depth. I will also discuss a recent proof-of-principle demonstration on an ion quantum computer. Lastly, I'll talk about some of the open problems concerning proofs of quantumness and how these relate to interesting questions in complexity theory. The talk will be mainly based around these results: https://arxiv.org/abs/2107.02163 https://meetings.aps.org/Meeting/DAMOP21/Session/C10.3 --------------------------------------------------------------------------- Giulia Ferrini Department of Microtechnology and Nanoscience - MC2 Chalmers University of Technology S-412 96 Göteborg Sweden -------------- next part -------------- En HTML-bilaga skiljdes ut... URL: