TODAY - CMSP Colloquium by Lev Ioffe (Google AI) 2PM

[CMSP Seminars Secretariat]

*CMSP COLLOQUIUM*

*1 August**2023, 2:00PM****
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*Budinich Lecture Hall (ICTP, Leonardo Building)*
/(light refreshments will be served at the end of the Colloquium)/*
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*Live streaming: *https://www.youtube.com/watch?v=CeKXnOqgI1Q*
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Speaker:*Lev Ioffe *(Google AI)

Title:*What can we learn now from noisy quantum computers?**
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Lev Ioffe studied theoretical physics at Landau Institute, Moscow 
obtaining his Ph.D. in 1985. An expert of condensed matter physics, in 
particular glasses and complex quantum systems, he held various 
professorships in the USA (Rutgers University, UW- Madison) and Europe 
(LPTHE, Paris). Among his many contributions, he is well known for 
influential research on Josephson junction arrays and superconducting 
systems as practical  implementations of quantum computation. He is 
presently a Senior Staff Researcher at Google AI Quantum.

Abstract:
At present quantum computers contain around 100 qubits whose life time 
is four orders of magnitude longer than the time for a gate operation. 
Can one do something useful with such a machine? I will argue that even 
these, very imperfect and noisy computers can address a number of 
physics questions that cannot be simulated by a classical computer in a 
realistic time. I will focus on problems of condensed matter and 
many-body physics. I will start with the short review of the physics of 
a superconducting quantum computing chip and outline the main physical 
effects that limit its coherence. I will then discuss the physics that 
is natural to simulate on such a device. One of the interesting 
questions is the formation of highly non-ergodic phases, which are still 
poorly understood. I will present our recent work in which we discovered 
the unexpected resilience of bound states in decorated spin chains, the 
first indication that quantum computer is on the verge of real 
scientific discoveries.

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CMSP, Condensed Matter & Statistical Physics Section
http://www.ictp.it/research/cmsp.aspx

The Abdus Salam International Centre for Theoretical Physics
https://www.ictp.it/

    
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