Control circuit for future supercomputer to be produced in Finland
The circuit will improve the computational accuracy and efficiency of quantum computers operating at extremely low temperatures.
Quantum computers require an ambient temperature of approximately -273 degrees centigrade to function properly. The Technical Research Centre of Finland (VTT) is to build a control circuit for such a superconducting computer that will function at very low temperatures. Future quantum computers will be able to crack IT encryption codes and perform searches of enormous databases, which are currently impossible. The memory bits of a quantum computer may have several states simultaneously. This feature has enabled the few existing quantum computers, which although still primitive may yet achieve super efficiency in the future.
The high efficiency of a quantum computer facilitates computing far beyond the capacity of present-day equipment. For example, where current computers perform 1,000,000 searches in an unorganised database, quantum computers will perform approximately 1,000 searches, thus reducing the number by 1,000-fold. In the future the most extensive and complicated computing tasks can only be resolved with a quantum computer.
The cryogenic control circuit to be constructed at VTT will bring us one step closer to the speed and accuracy required of a quantum computer. The control circuits operate at just 0.02 degrees centigrade above absolute zero (- 273.15 degrees centigrade). Thus far quantum computers have been controlled at room temperature, which has prevented the full use of their incredible speed. In addition, unlike quantum computers, the memory bits of modern computers only have two alternative states.
The EU-funded project carried out by VTT and the Helsinki University of Technology (HUT) involves the design of an integrated circuit comprising a quantum computer prototype and its control - the first one to operate in a cold environment. This enables accurate and fast control, which is less vulnerable to disturbances than the present-day ’room temperature’ control. VTT will also build the integrated circuit, while the quantum bits will be constructed using nanotechnology (a millionth of a millimetre) techniques by the other top research teams involved in the project, including the CEA nuclear energy institute in France, the Chalmers University of Technology in Sweden and the IPHT Institute in Jena, Germany.
In connection with low-temperature quantum technology, VTT and HUT have developed a wholly new kind of charge pump. In theory, the pump has a capacity up to 1,000-fold (one nanoampere) higher than that of currently used pumps (one picoampere) without compromising accuracy. The pump developed at VTT may essentially facilitate the definition of the electro-technical current normal (current standard), in the international SI system of units, which in turn will facilitate the functional testing of industrial current meters. In addition, the new current standard is one of the three fundamental quantities in electrical engineering, and it may revolutionise the electro-technical foundation of the entire SI system.
The new pump and controlled control of the quantum computer are connected with the Doctoral dissertation of Antti Niskanen (26). The dissertation of the young VTT Research Scientist was examined at HUT on 26 November. Construction of the new control circuit at VTT is a continuation of Niskanen’s work. In 2005 Niskanen will join the quantum technology top research unit NEC in Japan as Visiting Researcher.
Antti Niskanen | alfa
The most recent press releases about innovation >>>
Die letzten 5 Focus-News des innovations-reports im Überblick:
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...