Welcome to the Institute for Quantum Computing


The Institute for Quantum Computing (IQC) is excited to announce this year's recipients of the David Johnston Award for Scientific Outreach: Amit Anand, Everett Patterson and Fiona Thompson. The awards are given annually to recognize and celebrate students who have demonstrated exceptional dedication to enhancing public understanding of quantum research through outreach and community involvement.

This June, the Institute for Quantum Computing (IQC) welcomed 30 of the world’s brightest undergraduates to participate in the Undergraduate School for Experimental Quantum Information Processing (USEQIP). During the week-long program, undergraduate students learned about the wide range of topics in quantum computing from some of Canada’s top quantum academics. From hands on labs, to lectures on quantum information theory, students got a taste of the exciting field of quantum computing.

Monday, June 17, 2024

Taking quantum to the community

En francais

New quantum-nano fabrication and characterization facility lab advances research and enhances community innovation and collaboration.

The University of Waterloo has officially opened its state-of-the-art Inert Atmosphere Fabrication Lab (IAFL) as part of the Quantum-Nano Fabrication and Characterization Facility (QNFCF).


Wednesday, June 26, 2024 12:00 pm - 1:00 pm EDT (GMT -04:00)

IQC Student Seminar Featuring Stephen Harrigan

Towards an on-demand, all-electrical single-photon source

Research Advancement Center, 485 Wes Graham Way, Room 2009 Waterloo, ON N2L 6R2

Single-photon sources (SPSs) are an elementary building block for quantum technologies. An ideal SPS is deterministic, on-demand and produces exactly one photon per pulse. Additionally, desirable features include a high repetition rate, an all-electrical driving mechanism and compatibility with semiconductor manufacturing techniques. Despite great advances in the field of single photon emitters, an SPS with all the features outlined above remains elusive. In this talk, we will present our proposed SPS, consisting of a single-electron pump integrated in proximity to a lateral PN-junction, which would allow our SPS to meet all the criteria listed above. We discuss progress towards our goal, and also discuss an unconventional electroluminescence mechanism observed during recent experiments.

Wednesday, July 10, 2024 11:45 am - 12:45 pm EDT (GMT -04:00)

Security implications of device imperfections in quantum key distribution

IQC Special Seminar, Jerome Wiesemann, Fraunhofer Heinrich Hertz Institute HHI

Quantum key distribution (QKD) is on the verge of becoming a robust security solution, backed by security proofs that closely model practical implementations.  As QKD matures, a crucial requirement for its widespread adoption is establishing standards for evaluating and certifying practical implementations, particularly against side-channel attacks resulting from device imperfections that can undermine security claims. Today, QKD is at a stage where the development of such standards is increasingly prioritized. This works aims to address some of the challenges associated with this task by focusing on the process of preparing an in-house QKD system for evaluation. We first present a consolidated and accessible baseline security proof for the one-decoy state BB84 protocol with finite-keys, expressed in a unified language. Building upon this security proof, we identify and tackle some of the most critical side-channel attacks by characterizing and implementing countermeasures both in the QKD system and within the security proof. In this process, we iteratively evaluate the risk of the individual attacks and re-assess the security of the system. Evaluating the security of QKD systems additionally involves performing attacks to potentially identify new loopholes. Thus, we also aim to perform the first real-time Trojan horse attack on a decoy state BB84 system, further highlighting the need for robust countermeasures. By providing a critical evaluation of our QKD system and incorporating robust countermeasures against side-channel attacks, our research contributes to advancing the practical implementation and evaluation of QKD as a trusted security solution.