IQUIST Seminar Series

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The Illinois Quantum Information Science and Technology Center hosts a series of talks about topics related to Quantum Information Sciences in its various forms, including (but not limiting to): Quantum computers, Quantum simulation, Measuring the elusive Majorana fermion, and Photons. Talks will be given by senior researchers as well as students and postdocs. 

IQUIST Seminar: "Quantum Error Correction with Schrödinger Cats"

Event Type
Seminar/Symposium
Sponsor
IQUIST
Location
280 MRL
Date
Feb 26, 2020   1:00 pm  
Speaker
Shruti Puri, Yale University
Contact
Becky McDuffee
E-Mail
mcduffbe@illinois.edu
Phone
217-300-0898
Views
143

Quantum computers exploit the fundamentals laws of quantum mechanics to perform tasks that are well beyond the reach of any classical computer. Perhaps more remarkable than quantum computing itself is the concept of quantum error correction (QEC). With fault-tolerant QEC, it becomes possible to solve a computational problem accurately while transforming a many-body quantum state with a sequence of faulty operations on imperfect quantum hardware. However, fault-tolerant protocols come at the cost of dauntingly large overheads, pushing practical realization of useful quantum computers out of reach. In this talk I will present an elementary introduction to QEC. I will then introduce a new type of qubit called the Schrödinger cat qubit which is realized in a driven non-linear oscillator. The Schrödinger cat states are superpositions of two opposite phase coherent states. The cat qubit realized by parametrically driving a non-linear oscillator has some in-built protection against errors in hardware and software. Finally, I will discuss how this protected cat-qubit can significantly reduce the overheads for fault-tolerant QEC.

For Zoom link you may check the IQUIST calendar weekly email or contact Hannah Stites (hstites2@illinois.edu). To subscribe to our weekly email for event announcements, please go to https://lists.illinois.edu/lists/subscribe/iquist-announcements.

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