9th Workshop of the APS Topical Group on Hadronic Physics

Session

Quantum Information Science and Hadron Physics

Apr 15, 2021, 1:30 PM

Conveners

Quantum Information Science and Hadron Physics

• Henry Lamm (Fermilab)

Description

co-host: Ian Cloët

185. Accessing scattering amplitudes using quantum computers

Raúl Briceno (Jefferson Lab)

4/15/21, 1:30 PM

Oral Presentation

Future quantum computers may serve as a tool to access non-perturbative real-time correlation functions. In this talk, we discuss the prospects of using these to study Compton scattering for arbitrary kinematics. In particular, the need to restrict the size of the spacetime in quantum computers prohibits a naive determination of such amplitudes. However, we present a practical solution to this...

215. New digitization strategies for relativistic quantum field theories

Niklas Mueller (University of Maryland)

4/15/21, 1:50 PM

Oral Presentation

Quantum computers may become powerful tools to simulate various problems in quantum field theory, yet at present are restricted to lower dimensions and small volumes. Common digitization strategies are based on local Hilbert-space decomposition, which may not be optimal for systems with large volumes but few (or not so few) particles. Examples are (non-relativistic) quantum chemistry or low...

291. Diagnosis of information scrambling from Hamiltonian evolution under decoherence

Yuta Kikuchi (Brookhaven National Laboratory)

4/15/21, 2:10 PM

Oral Presentation

We apply a quantum teleportation protocol based on the Hayden-Preskill thought experiment to quantify how scrambling a given quantum evolution is. It has an advantage over the direct measurement of out-of-time ordered correlators when used to diagnose the information scrambling in the presence of decoherence effects stemming from a noisy quantum device. We demonstrate the protocol by applying...

223. Error mitigation in quantum computers through classical bit-flip correction

Lena Funcke (Perimeter Institute)

4/15/21, 2:30 PM

Oral Presentation

Quantum computers have the potential to outperform classical computers in a variety of tasks ranging from combinatorial optimization to machine learning to intrinsically evading the sign problem. However, current intermediate-scale quantum devices still suffer from a considerable level of noise. In this talk, we present a novel technique to mitigate measurement noise, which is based on...

292. Maximal Entanglement in High Energy Physics

Alba Cervera Lierta (University of Toronto)

4/15/21, 2:50 PM

Oral Presentation

We analyze how maximal entanglement is generated at the fundamental level in QED by studying correlations between helicity states in tree-level scattering processes at high energy. We demonstrate that two mechanisms for the generation of maximal entanglement are at work: i) s-channel processes where the virtual photon carries equal overlaps of the helicities of the final state particles, and...