Parity Adiabatic Quantum Computing

30 11/2015

Monday, 30 Nov. 2015, 17:30 - 18:30

Presenter: Wolfgang Lechner
Host: Ivette Fuentes
Where: Ernst-Mach-Hörsaal, 2. Stck. Strudlhofgasse 4, Wien

Adiabatic quantum computing is an alternative scheme to gate-based quantum computing with the aim to solve optimization problems efficiently. The working principle of current proposals in this direction is to encode an optimization problem in the interaction matrix of a spin glass Hamiltonian. The ground state of this Hamiltonian is the solution of the problem which is reached by adiabatic switching. The fundamental challenge in building a universal adiabatic quantum computer is the competing requirements of fully programmable all-to-all connectivity and the quasi locality of the interactions between physical qubits.


In this talk, I will present a programmable and scalable architecture with full connectivity, which can be implemented with local interactions only. The input is encoded in local fields acting on an extended set of physical qubits. The output is encoded redundantly in the physical qubits, resulting in an intrinsic fault-tolerance. This  architecture allows one to realize adiabatic quantum computers in previously unaccessible

platforms including superconducting qubits, NV-centers, quantum dots, as well as atomic systems.