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News

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?

Events

Monday, November 28, 2022 2:30 pm - 3:30 pm EST

quDit entanglement from coherent states by Kerr nonlinearity

IQC Colloquium featuring Professor Jaewan Kim, Professor/Vice-President of Korea Institute for Advanced Study (KIAS), President of Quantum Information Society of Korea (QisK)

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.

Wednesday, November 30, 2022 12:00 pm - 1:00 pm EST

IQC Student Seminar featuring Amolak Ratan Kalra

Categories of Kirchoff Relations

Abstract: I will be talking about the connections between electrical circuits and stabilizer qudit quantum circuits with an eye towards applications to qudit quantum error correction. More formally I will be defining a category dubbed Kirchhoff relations and characterize the maps in this category using parity check matrices. I will then go on to give a universal set of generators for this category and interpret these generators in-terms of electrical elements.

This is work in progress.

The main technical reference is the following paper: https://arxiv.org/pdf/2205.05870.pd
Thursday, December 1, 2022 12:00 pm - 1:00 pm EST

Quantum Perspectives: Simulation

Quantum mechanics is the most successful theory of physics, giving us the rule book to model phenomenon at the sub-microscopic scale. Knowing the rule book doesn’t necessarily mean it’s easy to follow though. Calculating and modelling quantum systems like complex molecules or materials is computationally demanding for modern computers. However, by mimicking the system of interest with another quantum system, we can explore their properties efficiently and learn a great deal about quantum mechanics itself.

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