Past Seminars

May 2022
May 31 2022
10:00 am - 11:00 am

Self-mitigating Trotter circuits for SU(2) lattice gauge theory on a quantum computer

Sarah Powell, York University. Calculations within SU(2) pure gauge theory are able to show the motion of an excitation traveling across a spatial lattice in real time. This is accomplished by using a simple yet powerful method for error mitigation, where the original circuit is used both forward and backward in time. For a two-plaquette lattice, meaningful results are obtained from a circuit containing hundreds of CNOT gates. The same method is used for a five-plaquette lattice, where calculations show that residual systematic effects can be reduced through follow-up mitigation.
B143 Physics and Astronomy Building
Gerardo Adesso
May 23 2022
11:30 am - 12:30 pm

Every Quantum Helps

Gerardo Adesso, University of Nottingham
B143 Physics and Astronomy Building
April 2022
Subir Sachdev
Apr 11 2022
11:30 am - 12:30 pm

Deconfined Z_2 gauge theory in Rydberg atom arrays

Subir Sachdev, Harvard University. Pumped Rydberg atoms trapped in arrays of optical tweezers realize systems of individually controllable qubits with strong interactions. I will describe recent theory and experiments on Z_2 spin liquids, which are deconfined phases of Z_2 gauge theory in 2+1 dimensions.
C520 Physics and Astronomy Building
December 2021
November 2021
October 2021
Oct 04 2021
2:30 pm - 3:30 pm

Physical Simulation Through a Quantum Computational Lens

Jarrod McClean, Google As quantum technology rapidly advances, a premier application of interest is the simulation of physical, chemical, and material systems to improve the pathway towards novel design. However, even before large, fault-tolerant devices are available, the study of quantum computer science can shape our perspective on the natural world. In this talk, we will first review some of the techniques that make quantum computers especially promising for the simulation of chemical and material systems. From there, we explore what we have learned about the limits of even quantum computing methods, and their relationship with collecting data from nature. In particular, we'll cover recent results on the ways in which data can elevate classical learning models beyond conventional classical computation when samples from a quantum computer are provided. We'll use this to shape an outlook for the future relationship between quantum computing, chemistry, and materials science.
Cyber Space
April 2021
March 2021
No event found!
Load More