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Wednesday, April 18, 2018 10:00 am - 10:00 am EDT (GMT -04:00)

PhD Seminar • Human-Computer Interaction — Tell Me What To Do: Understanding the Information Needs of Parents of Young Children

Anastasia Kuzminykh, PhD candidate
David R. Cheriton School of Computer Science

While technologies exist that are either marketed for or can be adapted to the monitoring of toddlers and school-age children, parents' perspectives on these technologies have received only limited attention. 

Wednesday, April 18, 2018 11:00 am - 11:00 am EDT (GMT -04:00)

PhD Seminar • Human-Computer Interaction — Introducing Transient Gestures to Improve Pan and Zoom on Touch Surfaces

Jeff Avery, PhD candidate
David R. Cheriton School of Computer Science

Despite the ubiquity of touch-based input and the availability of increasingly computationally powerful touchscreen devices, there has been comparatively little work on enhancing basic canonical gestures such as swipe-to-pan and pinch-to-zoom. 

Tuesday, April 24, 2018 1:00 pm - 1:00 pm EDT (GMT -04:00)

PhD Seminar • Quantum Computing — Dissipative Quantum Search

Chunhao Wang, PhD candidate
David R. Cheriton School of Computer Science

We give a dissipative quantum search algorithm that is based on a novel dissipative query model. If there are $N$ items and $M$ of them are marked, this algorithm performs a fixed-point quantum search using $O(\sqrt{N/M}\log(1/\epsilon))$ queries with error bounded by $\epsilon$. In addition, we present a continuous-time version of this algorithm in terms of Lindblad evolution.

Tuesday, April 24, 2018 2:00 pm - 2:00 pm EDT (GMT -04:00)

PhD Seminar • Quantum Computing — A Quantum Algorithm for Simulating Non-sparse Hamiltonians

Chunhao Wang, PhD candidate
David R. Cheriton School of Computer Science

We present a quantum algorithm for simulating the dynamics of Hamiltonians that are not necessarily sparse. Our algorithm is based on the assumption that the entries of the Hamiltonian are stored in a data structure that allows for the efficient preparation of states that encode the rows of the Hamiltonian. We use a linear combination of quantum walks to achieve a poly-logarithmic dependence on the precision.