Extended Quantum XOR Gate in Terms of Two-Spin Interactions
Dima Mozyrsky, Vladimir Privman, Steven P. Hotaling
Abstract
Considerations of feasibility of quantum computing lead to the study of multispin quantum gates in which the input and output two-state systems (spins) are not identical. We provide a general discussion of this approach and then propose an explicit two-spin interaction Hamiltonian which accomplishes the quantum XOR gate function for a system of three spins: two input and one output.