Join us for the Physics Condensed Matter Seminar at 2:30 pm
Title: Many-body ground state problem and near-term quantum computer
It is well-known that solving the ground state of locally interacting quantum many-body systems can be computationally challenging in two spatial dimensions and higher. There are approaches to solve this problem using a quantum computer, but the quantum computers available these days are still noisy and small, posing a significant challenge in obtaining high-accuracy solutions. I will discuss an overview of known approaches, focusing on their promises and challenges. Then I will discuss an approach that can sidestep many of these practical challenges. This is an approach in which the variational calculation of already-established many-body ansatz (e.g., tensor network) is delegated to a quantum computer. This approach leverages the known structure of wave functions in many-body systems, leading to speedups using a modest amount of resources, while ensuring that the outcome of the computation is robust to experimental noise.
Join Zoom Meeting https://berkeley.zoom.us/j/99982021890?pwd=OTMyd3cwMGp5Tk9QTW1vNk9EMDJNZz09
Meeting ID: 999 8202 1890 Passcode: 954439
Location: virtual (zoom)
Speaker: Isaac Kim
Affiliation: UC Davis