Wolfram Alpha May 18, 2009
Posted by Geordie in World Domination.22 comments
The most impressive software demo I’ve seen since Photosynth. Check out this screencast, it is absolutely amazing.
Ten beautiful computers May 14, 2009
Posted by Geordie in World Domination.18 comments
Yes one of our earlier models made the list.
A scalable readout system for a superconducting adiabatic quantum optimization system May 6, 2009
Posted by Geordie in D-Wave Science & Technology.7 comments
We have designed, fabricated and tested an XY addressable readout architecture for superconducting flux qubits in an integrated circuit designed to enable adiabatic quantum optimization algorithms. The readout architecture for an N-qubit system comprises N hysteretic dc SQUIDs and N rf SQUID latches controlled with wires. The latching elements are coupled to the qubits and provide exceptional readout fidelity. The dc SQUIDs are then coupled to the latches to provide coarse readout. A key advantage of this architecture is that the latches are unaffected by the ac currents generated in the dc SQUIDs during switching. We place a lower bound on the readout fidelity of 99.9999% in an 8 qubit test system.
A Compound Josephson Junction Coupler for Flux Qubits With Minimal Crosstalk April 24, 2009
Posted by Geordie in D-Wave Science & Technology.2 comments
This is the device used to couple qubits in the current design. It is used in the 128-qubit systems currently under test.
An improved tunable coupling element for building networks of coupled rf-SQUID flux qubits has been experimentally demonstrated. This new form of coupler, based upon the compound Josephson junction rf-SQUID, provides a sign and magnitude tunable mutual inductance between qubits with minimal nonlinear crosstalk from the coupler tuning parameter into the qubits. Quantitative agreement is shown between an effective one-dimensional model of the coupler’s potential and measurements of the coupler persistent current and susceptibility.
Deep belief networks April 16, 2009
Posted by Geordie in General.6 comments
Closely related to AQC, believe it or not.
This is a youtube video — a Google tech talk — with Geoff Hinton from Toronto.
128 qubit chip mounted on I/O system April 14, 2009
Posted by Geordie in D-Wave Science & Technology.15 comments
A close-up, fully wirebonded April 13, 2009
Posted by Geordie in D-Wave Science & Technology.2 comments
First view: 128 qubit Rainier chip April 13, 2009
Posted by Geordie in D-Wave Science & Technology.7 comments


