Patent ID: 8504497

Claim:
A method for adiabatic quantum computing using a quantum system comprising a plurality of superconducting qubits, wherein the quantum system is capable of being in any one of at least two configurations at any give time, the at least two configurations including: a first configuration described by an initialization Hamiltonian H O having a first state; and a second configuration described by a problem Hamiltonian H P having a second state, the method comprising: initializing the quantum system to the first configuration; evolving the quantum system wherein at least a portion of the evolution is adiabatically evolved thereby achieving an adiabatic evolution wherein a state of the quantum system during the adiabatic evolution is characterized by an evolution Hamiltonian H until it is described by the second state of the problem Hamiltonian H P , and wherein the evolution Hamiltonian H comprises an energy spectrum with at least one anticrossing; controlling a rate of the adiabatic evolution via an evolution rate parameter γ(t); reducing the rate of change of the evolution rate parameter γ(t) during the adiabatic evolution in a vicinity of a first anticrossing in the at least one anticrossing; and reading out the state of the quantum system.