Calculating spin correlations with a quantum computer
We calculate spin correlation functions using IBM quantum processors,
accessed online. We demonstrate the rotational invariance of the singlet state,
interesting properties of the triplet states, and surprising features of a
state of three entangled qubits. This exercise is ideal for remote learning and
generates data with real quantum mechanical systems that are impractical to
investigate in the local laboratory. Students learn a wide variety of skills,
including calculation of multipartite spin correlation functions, design and
analysis of quantum circuits, and remote measurement with real quantum
processors.
Jed Brody Gavin Guzman