Seminar: The development of quantum-structured neutron beams

Standard, unentangled neutron beams have historically had exceptional success as probes of complex condensed matter systems. In this talk, I discuss work that extends the venerable field of neutron scattering to include mode-entangled neutrons that are intraparticle-entangled in their various degrees of freedom such as the spin, path, energy, and orbital angular momentum subspaces. To produce such quantum-structured, entangled beams, we must develop and modify high-fidelity polarized neutron instrumentation such as magnetic Wollaston prisms (MWPs) and radio-frequency (rf) neutron spin flippers. I will discuss various experiments that use these devices for three primary purposes: 1) the investigation of the entanglement of quantum materials and the search for novel scattering signatures, 2) quantum-enhanced sensing and metrology of conventional systems, and 3) the precision measurement of the fundamental and emergent physical properties of the neutron.