Welcome to the Institute for Quantum Computing

The exterior of the Institute for Quantum Computing building


When Institute for Quantum Computing (IQC) Research Associate Matthew Day had his lab temporarily closed during the COVID-19 pandemic, the experimentalist found himself at some loose ends. What’s an experimentalist to do without his equipment? For Day, it was a chance for him to ask questions he’d been thinking about for a while. Specifically, Day wanted to know: how does equipment in the lab affect experiments?


Tuesday, December 13, 2022 3:30 pm - 4:30 pm EST

Generating k EPR-pairs from an n-party resource state

IQC Math CS Seminar - featuring Mario Szegedy, Rutgers University

Motivated by quantum network applications over classical channels, we initiate the study of n-party resource states from which LOCC protocols can create EPR-pairs between any k disjoint pairs of parties. ...

Wednesday, December 14, 2022 2:30 pm - 3:30 pm EST

Complexity and Clarity for Kitaev Candidate Materials

Chemistry Seminar Series – Steve Winter, Wake Forest University

Host: A. Wei Tsen

Quantum materials represent a broad class of systems whose experimental response relies directly on entanglement between their underlying degrees of freedom. Modeling of such materials presents a variety of challenges related to a disparate variety of complex behaviours that manifest at different energy scales, and a typical sensitivity of responses to model parameters. In this field, first-principles approaches often provide a vital bridge between experiments and theoretical models. In this talk, I will introduce our numerical strategies for systematically building low-energy models with local charge, spin, and orbital degrees of freedom of arbitrary complexity. I will discuss the insights that these methods have yielded for frustrated magnetic insulators collectively known as "Kitaev materials", which have prompted a recent explosion of interest in quantum magnets where spin-orbit coupling induces strongly anisotropic and competing magnetic interactions. I will specifically address our recent attempts to understand the magnetic models of few-layer RuCl3 and high-spin d7 Co(II) compounds, which have recently been identified as possible alternative platforms for realising the celebrated Kitaev model.

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