Quantum Computing Firm D-Wave Systems Announces Publication of New Peer-Reviewed Paper in Nature Communications

Quantum Computing Firm D-Wave Systems Announces Publication of New 
Peer-Reviewed Paper in Nature Communications 
BURNABY, British Columbia and PALO ALTO, Calif., May 22, 2013 /CNW/ - D-Wave 
Systems Inc., the world's first commercial quantum computing company, today 
announced the publication of a peer-reviewed paper entitled "Thermally 
assisted quantum annealing of a 16-qubit problem" in the journal Nature 
The paper presents the results of the first experimental exploration of the 
effect of thermal noise on quantum annealing. Quantum annealing is the process 
by which qubits, the basic unit of information in a quantum computer, are 
slowly tuned (annealed) from their superposition state (where they are 0 and 1 
at the same time) into a classical state (where they are either 0 or 1). 
D-Wave quantum computers use this process to solve optimization problems in 
which many criteria need to be considered in order to come up with the best 
solution. These types of problems exist in many disciplines, such as cancer 
research, image recognition, software verification, financial analysis and 
Using 16 qubits within a D-Wave processor, the experiments demonstrated that, 
for the problem studied, even with annealing times eight orders of magnitude 
longer than the predicted single-qubit decoherence time (the typical time it 
takes for environmental factors to start to corrupt the state of a qubit), the 
probabilities of performing a successful computation are similar to those 
expected for a fully coherent system. The experiments also demonstrated that 
by repeatedly annealing the open system quickly several times rather than 
annealing a hypothetical closed system slowly once, quantum annealing can take 
advantage of a thermal environment to achieve a speedup factor of up to 1,000 
over the closed system (a closed system is one which does not interact with 
its environment, whereas an open system does interact with it). 
"Our experiments demonstrated that mechanisms that many believed would disrupt 
quantum annealing (or AQC) calculations based on theoretical analyses of 
hypothetical, closed quantum systems operating at zero temperature don't 
necessarily do so for real, open quantum systems operating at finite 
temperature," said Eric Ladizinsky, co-founder and Chief Scientist of D-Wave. 
"One example of this, described in the paper, is that we found that a small 
amount of thermal noise (generally thought to be universally bad) can actually 
enhance problem solving effectiveness, rather than diminish it.  As all real 
quantum computers will inevitably be open quantum systems operating at finite 
temperature we hope our paper will encourage others to think more deeply about 
the prospects of quantum computing in open quantum systems." 
This paper is the latest in a long line of peer-reviewed papers from D-Wave 
scientists. Earlier this year, D-Wave published another paper in Scientific 
Reports, a Nature Publishing Group journal, discussing the effect of 
environmental decoherence on the ground state during adiabatic quantum 
computation. Over the past decade, almost 60 peer-reviewed papers authored by 
scientists at D-Wave have been published in prestigious journals, including 
Nature, Physical Review, Science, Quantum Information Processing, and the 
Journal of Computational Physics (see 
About D-Wave Systems Inc. 
Founded in 1999, D-Wave's mission is to integrate new discoveries in physics 
and computer science into breakthrough approaches to computation. The 
company's flagship product, the 512-qubit D-Wave Two™ computer, is built 
around a novel type of superconducting processor that uses quantum mechanics 
to massively accelerate computation. Recently D-Wave announced the 
installation of a D-Wave Two at the new Quantum Artificial Intelligence Lab 
created jointly by that NASA, Google and USRA. This came soon after 
Lockheed-Martin's purchase of an upgrade of their 128-qubit D-Wave One™ 
system to a 512-qubit D-Wave Two. With headquarters near Vancouver, Canada, 
the D-Wave U.S. offices are located in Palo Alto, California. D?Wave has a 
blue-chip investor base including Bezos Expeditions, Business Development Bank 
of Canada, Draper Fisher Jurvetson, Goldman Sachs, Growthworks, Harris & 
Harris Group, In-Q-Tel, International Investment and Underwriting, and 
Kensington Partners Limited. For more information, visit: www.dwavesys.com or 
learn more at www.youtube.com/user/dwavesystems. 
Media contact: Janice Odell - 415. 738.2165 - jan@fordodell.com 
This press release may contain forward-looking statements that are subject to 
risks and uncertainties that could cause actual results to differ materially 
from those set forth in the forward-looking statements. 
SOURCE: D-Wave Systems Inc. 
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CO: D-Wave Systems Inc.
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-0- May/22/2013 09:01 GMT
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