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    2025 is the International Year of Quantum Science and Technology
    This global initiative, proclaimed by the United Nations on June 7, 2024, marks a significant milestone in the world of science and technology. This webpage serves as your central resource for IYQ events, activities, and information. We aim to increase public awareness about the importance and applications of quantum science across various fields.
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    Newsletter - CQIQC Connections
    Stay informed about the latest quantum research at the University of Toronto through the CQIQC Connections newsletter. You will find updates on CQIQC activities, events, interviews with researchers, research projects, opportunities, and achievements.
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    Graduate Courses in Quantum
    CQIQC is a multi-disciplinary organization, and our quantum course offerings are administered by various departments at the University of Toronto, including Chemistry, Computer Science, Engineering, Mathematics, and Physics. We encourage students to explore courses beyond their own departments. You can find a list of courses offered by CQIQC members for this academic year by clicking the button below.
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    Watch the CQIQC-X Conference Anytime with Available Videos
    Watch the conversations shared during the CQIQC-X conference! Recordings of all the presentations, along with the Bell Prize Award Session honouring John Preskill, are now accessible on the conference website. Scroll down to the schedule section to find links to each talk.
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    Research Breakthroughs
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    Bell Prize Award
    This award recognizes major research contributions relating to the foundations of quantum mechanics and to the applications of these principles covering theoretical & experimental research, both fundamental and applied. Award Ceremony: CQIQC conference, August 26-30, 2024
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CQIQC

CQIQC is tasked with promoting research collaborations in the rapidly evolving interdisciplinary fields of quantum information and quantum control. CQIQC's activities at the University of Toronto encompass the Departments of Chemistry, Physics, Mathematics, Computer Science, Electrical Engineering, and Materials Science.

The Center was established in April 2004 with internal funding from the President of the University of Toronto, the Vice-President of Research and Associate Provost, the Dean of the Faculty of Arts & Science, and the Dean of the Faculty of Engineering. CQIQC funds endowed postdoctoral fellowships and summer student scholarships, organizes conferences, workshops and summer schools, coordinates the development and teaching of graduate courses in quantum science, and runs a seminar series. It also sponsors the biennial John Stewart Bell Prize for Research on Fundamental Issues in Quantum Mechanics and their Applications.

We encourage the UofT community to join us. To sign up to our mail list and participate in our activities, please contact quantum@utoronto.ca or visit us at LinkedIn.

Research Areas

CQIQC members are involved in a variety of theoretical and experimental activities, including coherent control, quantum optics, quantum cryptography, quantum decoherence-control, and quantum algorithms.

Click the title to learn more about our researchers' latest work and projects.

Recent Publications

Variable-strength measurement results
Variable-strength nonlocal measurements reveal quantum violations of classical counting principles
Quantum theory has proven wildly successful in predicting properties of systems whose past or future are specified. Applying the theory to systems with a definite past and future yields infamously counterintuitive predictions, e.g., three quantum pigeons can apparently occupy two pigeonholes without any pair occupying the same pigeonhole. Are such counterintuitive predictions merely an artifact of measurement disturbance?
Bosonic Quantum Device
Simulating Vibrational Dynamics on Bosonic Quantum Devices
Quantum algorithms for quantum chemistry on qubit-based quantum devices have seen tremendous development over the past decade. Although algorithms for electronic structure theory have been at the forefront of these advances, calculation of vibrational and vibronic spectra have also recently started gaining attention.5−15 However, the latter algorithms require a boson-to-qubit mapping that necessitates truncating the bosonic Fock space above a chosen threshold.
Intensity noise power spectral density (PSD) for various Sagnac loop lengths.
Long-fiber Sagnac interferometers for twin-field quantum key distribution networks
Based on carriers that cannot be copied or eavesdropped without notice to the communicating parties, quantum key distribution (QKD) allows remote users to establish shared encryption keys with information-theoretic security. QKD networks are an important building block for large-scale quantum networks and have been studied extensively [5– 12 ]. However, their key rates are limited by the repeaterless bounds on the key rate scaling with channel loss.
Quantum-computing-enhanced
Quantum-computing-enhanced algorithm unveils potential KRAS inhibitors
Drug discovery is a multifaceted and resource-intensive process encompassing the discovery, development and comprehensive testing of new molecules. Typically extending over a decade and incurring substantial costs, the pharmaceutical industry faces substantial financial risks. The pressing need for efficiency and innovation in drug discovery has led to integrating advanced computational tools into traditional pharmaceutical research methodologies.