CoSponsors Industry Canada National Research Council Canada Western

Co-Sponsors: Industry Canada National Research Council Canada Western Economic Diversification Canada

SOLID STATE QUANTUM COMPUTERS • SUPERCONDUCTORS • SPINS • OPTICS

Photonic lattices for a quantum computer Painter et al. (2003).

Si based quantum computer B. E. Kane, Nature 393, 133 (1998).

Quantronium Qubit Developed at CEA-Saclay Two-qubit structures built; best single qubit results

Persistent Current Qubit Delft, IBM, MIT, NTT, IPHT, others Evidence for two-qubit entanglement obtained first by D-Wave/IPHT

Current Biased Josephson Junction Qubit Biggest, simplest, realizable today in Nb/Nb. N Two-qubit entanglement obtained first by Maryland

D-Wave & ARDA Hardware Roadmaps D-Wave Roadmap ARDA Roadmap # Entangled Qubits # Qubits QFT Year “ 1” - 2002 2 - 2003 4 2 2004 8 4 2005 16 8 2006 32 16 2007 64 32 2008 ARDA Milestone 3 -5 qubits entangled; 2 -qubit gates 1 2009 2010 2011 2012 1 10 or more qubits entangled Already completed for charge (published), underway for 3 J, Saclay & CBJJ qubits.

• Fabrication • Electronics • Cryogenics • Theory • Applications

• “Standard” quantum algorithms • Adiabatic computations • Type II computations • Simulation

• Quantum computers as analog devices

Useful analog devices

Whether it is a black cat or a white cat, or a coherent superposition, as long as it can catch the rat, it is a good cat.