Speaker
Description
The intersection of high energy physics and quantum information science has opened new avenues for exploring fundamental physics at high energy colliders. Future lepton colliders, characterized by their clean collision environments and precise beam controls, provide an ideal experimental platform for high energy quantum information measurement. In this talk, we present a comprehensive study of quantum information observables in fermion pair production—specifically top pair production, muon pair production, and Bhabha scattering—which represent the mass threshold behavior, the Z-pole resonance, and the s/t-channel interplay. We will explore how longitudinal beam polarization can serve as a controllable quantum channel to manipulate the two-qubit spin density matrix. Our discussion focuses on three key quantum resources: quantum entanglement, Bell nonlocality, and magic. Our findings highlight that beam polarization is not merely a tool for enhancing statistical precision, but a fundamental knob for probing and controlling quantum resources at the high energy frontier.
