Spin-Boson Model to Demonstrate Quantum Tunneling in Biomolecules using
  IBM Quantum Computer
Efficient simulation of quantum mechanical problems can be performed in a
quantum computer where the interactions of qubits lead to the realization of
various problems possessing quantum nature. Spin-Boson Model (SBM) is one of
the striking models in quantum physics that enables to describe the dynamics of
most of the two-level quantum systems through the bath of harmonic oscillators.
Here we simulate the SBM and illustrate its applications in a biological system
by designing appropriate quantum circuits for the Hamiltonian of photosynthetic
reaction centers in IBM's 5-qubit quantum computer. We consider both two-level
and four-level biomolecular quantum systems to observe the effect of quantum
tunnelling in the reaction dynamics. We study the behaviour of tunneling by
changing different parameters in the Hamiltonian of the system. The results of
SBM can be applied to various two-, four- and multi-level quantum systems
explicating electron transfer process.
Yugojyoti Mohanta Dhurjati Sai Abhishikth Kuruva Pruthvi Vijay Kumar Bikash K. Behera Prasanta K. Panigrahi