CQI Seminar: William Schober
by william.schober＠usi.ch
Dear friends,
Next Wednesday, December 17th at 16:00 in D4.01 I'll give a talk, title and abstract below. Afterward we'll go together to Kulma for a group Christmas celebration.
Warmly,
Will Schober
Title: Towards a Hierarchical Quantum Circuit Language
Abstract: Many circuit-based quantum programming languages contain limited functionality for handling programs with quantum branching events. In this paper we introduce a hierarchical circuit language with two new connectives, one for generalized controlled operations and one for sub-circuit exponentiation, to reason formally about such programs. We construct the hierarchical circuit language using a novel category-theoretic construction, demonstrate how generalized controlled operations describe quantum control flow, discuss applications to compiler optimization, and then contrast generalized controlled operations with Pauli rotations.
2 weeks, 1 day
CQI Seminar: Félix Thouin
by william.schober＠usi.ch
Dear friends,
Next Thursday, the 4th of December at 10:00 in D5.01 we'll have a talk by Félix Thouin from the Université de Montréal, title and abstract below.
Hope to see you there,
Will Schober
Title: Towards a quantum information perspective on multidimensional spectroscopy
Abstract: Multidimensional spectroscopy refers to an ensemble of experimental techniques that probe the coherent non-linear response of matter to a sequence of optical electromagnetic pulses. By analyzing this response, it is possible to infer the quantum dynamics of excited states. Great technological advances in ultrafast pulse generation, manipulation and detection have made these experiments more accessible than ever but their interpretation remains a fantastic challenge. To leverage the full potential of these techniques in condensed matter physics, we seek to develop an algorithmic understanding of the effect of a sequence of pulses on matter. In this presentation, I will share with you the status of this quest. After introducing the technique, a pedestrian stroll through the formalism of how light interacts with matter will take us right into Liouville space. There, perturbation theory will surprise us with non-completely positive or trace preserving operations despite being very real and physical processes. From there, I hope to gain insights by discussing the road ahead with you all.
3 weeks, 3 days