Scientists recreate properties of light in neutral fundamental particles called neutrons for the first time in experimental history.
Please join us for the IQC Student Seminar on Wednesday Nov 23 at noon. This week’s seminar will take place in the form of an impromptu poster practice session, where students will discuss interesting research on the whiteboard. This is to encourage students to talk about their work in progress, while practicing communication skills by presenting to non-experts. It's also a great way to learn how big the field of quantum research is! No prior preparation is necessary.
As always, pizza lunch will be provided to attendees.
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?
The magnetic properties of an exotic material in the atomically thin two-dimensional limit may lead to future applications in quantum information processing.
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.
A team of researchers at the Institute for Quantum Computing (IQC) have found a new tunable pathway to manipulate nanoscale magnetic structures known as skyrmions.
It is impossible to solve the local Hamiltonian problem exactly, assuming P is not equal to QMA. Instead, one can ask for approximation algorithms, which output states achieving good energy uniformly across all instances. Semi-definite programming (SDP) has achieved great success in approximation algorithms for classical constraint satisfaction. But how can we round the SDP to an entangled quantum state? Variational quantum algorithms can capture entangled quantum states. ...
Please join us for the IQC Student Seminar on Wednesday Nov 16 at noon. This week’s seminar will take place in the form of an impromptu poster session, where students joining will be divided into groups and discuss each other's current work using the whiteboard. This is to encourage students to talk about their work in progress, while practicing communication skills by presenting to non-experts. It's also a great way to learn how big the field of quantum research is!
A coherent state can be interpreted as a superposition of pseudo-number states with equal weight. Using cross-Kerr nonlinearity two coherent states can be made into a maximal entanglement of pseudo-number states and pseudo-phase states. Some applications of the entanglements of pseudo-number/phase states, such as quDit teleportations, will be discussed.
This talk aims to highlight some mathematical tools that can be used in prob- lems related to quantum computing. We start with monogamy-of-entanglement games and study how to approach them through the Haar measure on unitary matrices. ...