Observation of spin-1 tunneling on a quantum computer

Abstract

Spin-1 tunneling and splitting of energy levels as a result of tunneling are observed explicitly on IBM's quantum computer, ibmq-bogota. The spin-1 is realized with two spins-1/2. We detect oscillations of spin-1 between the states |1 , | − 1 in the result of tunneling on the basis of studies of the time dependence of the mean value of zcomponent of spin-1 on the quantum device. The energy level splitting is observed quantifying on the IBM's quantum computer the eigenvalues of Hamiltonian which describes the spin tunneling.