PhD candidate: Daniel Puzzuoli
Supervisor: John Watrous
Thesis available from MGO - mgo@uwaterloo.ca
Speaker: Twesh Upadhyaya
Matthew Amy, PhD candidate
David R. Cheriton School of Computer Science
Colloquium
Chris Ferrie will take you through a historical journey of his own coming of age with digital software and what that experience has granted him. The lesson to be learned is that children will take advantage of the opportunities they are given, but only if their parents and teachers show genuine interest in the activities giving rise to those opportunities. 20 years from now, there will be a Quantum Technology equivalent of Bill Gates. That future leader is only a young child today.
We study the role of Hamiltonian complexity in the performance of quantum annealers. It is well-known that non-stoquastic Hamiltonians are more complex than stoquastic Hamiltonians and universal adiabatic quantum computing is possible when they are employed. Here we ask whether utilizing non-stoquastic Hamiltonians in quantum annealers can lead to a better performance in solving optimization problems.
Interested in learning more about the Transformative Quantum Technologies (TQT) initiative? Attend the TQT information session from 1:00 – 3:00 PM in the RAC 2 Quiet Labs foyer. Please join us to learn about TQT’s program opportunities, latest research developments and future directions.
In ordinary, non-relativistic quantum theory, especially in quantum information, space and time are treated differently. For example, time is a parameter rather than an operator; states are defined across the whole space but only at one time, and then evolve under the prescribed dynamics. These go against our intuition from relativity. Thus, space-time density matrices have been introduced and here we discuss one of these formulations called pseudo-density matrix (PDM) which treats space and time indiscriminately.
Understanding the interplay of non-equilibrium effects, dissipation and many body interactions is a fundamental challenge in condensed matter physics. In this work, as a case study, we focus on the transient dynamics and the steady state characteristics of the double-dot Aharonov-Bohm (AB) interferometer subjected to a voltage and/or temperature bias. We first consider an exactly solvable case, the noninteracting double-dot AB interferometer.