Timeline for Quantum Annealing in Ising Spin Glasses: *1981- Ising spin glass model introduced and studied for its transition behavior; *1989- Idea proposed that quantum fluctuations could help explore rugged energy landscapes of the Ising spin glasses by escaping from local minima (having tall but thin barriers) using tunneling; *1991- Experimental realization of quantum Ising spin glass in LiHoYF; *1998- First Monte Carlo simulation demonstrating quantum annealing in Ising glass systems; *1999- First experimental demonstration of quantum annealing in LiHoYF Ising glass magnets; *2011- Superconducting-circuit quantum annealing machine for Ising spin glass systems realized and marketed by D-Wave Systems.