The research demonstrates how quantum state tomography can reveal the full quantum characteristics of photoelectrons emitted from atoms, showing pure quantum states in helium but mixed states in argon due to spin-orbit coupling, thus bridging photoelectron spectroscopy with quantum information science.
Researchers have showed that a microscopic parametrization of quantum gates under time-correlated noise on the driving phase, motivated by recent experiments with trapped-ion gates, enables a more efficient version of GST.
Researchers have developed a method to make previously hardly accessible properties in quantum systems measurable. The new method for determining the quantum state in quantum simulators reduces the number of necessary measurements and makes work with quantum simulators much more efficient.