Conveners
Quantum Information Science and Hadron Physics
- Henry Lamm (Fermilab)
Description
co-host: Ian Cloët
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...
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...
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...
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...
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...
