2023 CAP Congress / Congrès de l'ACP 2023

Session

(DTP) W1-5 Quantum Theory | Théorie quantique (DPT)

W1-5

21 Jun 2023, 10:30

University of New Brunswick

Conveners

(DTP) W1-5 Quantum Theory | Théorie quantique (DPT)

• Marco Merkli (Memorial University)

3726. (I) Bosonic quantum interface: characterization, engineering, and application

Hoi-Kwan Lau (Simon Fraser University)

21/06/2023, 10:30

Theoretical Physics / Physique théorique (DTP-DPT)

Invited Speaker / Conférencier(ère) invité(e)

Bosonic quantum systems, such as photons, mechanical oscillators and spin ensembles, are promising platforms for implementing quantum technologies. Operating these quantum devices inevitably require interfaces that couple multiple bosonic degrees of freedom (modes). Unfortunately, each platform suffers from respective practical restrictions that limit the type of interface being implemented....

3591. (G*) Benchmarking of Universal Qutrit Gates

David Amaro Alcala (University of Calgary)

21/06/2023, 11:00

Theoretical Physics / Physique théorique (DTP-DPT)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

We develop an approach for the characterization of universal qutrit gates which extends Clifford Randomized Benchmarking (RB). Our extension uses group theoretical and data recovery methods similar to RB. We show that our approach is both feasible and efficient, and compatible with current experimental methods. This extended RB scheme is valuable for three communities. For experimentalists, it...

3622. Quantum recurrence in the kicked top model

Amit Anand (IQC, University of Waterloo, Canada)

21/06/2023, 11:15

Theoretical Physics / Physique théorique (DTP-DPT)

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle)

Quantum-classical correspondence plays an important role in understanding the emergence of classical chaos from an underlying quantum mechanics. Here we present several families of quantum dynamics, each parameterized by dimension, that do not approach the classically chaotic dynamics as predicted by Bohr’s correspondence principle. The quantum dynamics take the form of stroboscopic unitary...

3666. (G*) Dynamics and entanglement in quantum and quantum-classical systems: lessons for gravity

Irfan Javed (University of New Brunswick)

21/06/2023, 11:30

Theoretical Physics / Physique théorique (DTP-DPT)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Motivated by quantum gravity, semiclassical theory, and quantum theory on curved spacetimes, we study the system of an oscillator coupled to two spin-1/2 particles. This model provides a prototype for comparing three types of dynamics: the full quantum theory, the classical oscillator with spin backreaction, and spins propagating on a fixed oscillator background. From calculations of...