On May 11, 2011, D-Wave Systems announced D-Wave One, described as "the world's first commercially available quantum computer", operating on a 128-qubit chipset[10] using quantum annealing (a general method for finding the global minimum of a function by a process using quantum fluctuations)[2][3][4][5] to solve optimization problems. The D-Wave One was built on early prototypes such as D-Wave's Orion Quantum Computer.