Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New simulator is next step on the road to developing quantum computers

27.11.2006
Scientists have proven theoretically a novel way to build a simulator that can recreate the way atoms and particles behave in a quantum system, says research published today.

The proposed simulator is unique because it could let researchers control how individual particles move and interact with each other. This ability to control individual parts of a quantum system is key to the development of powerful quantum computers in the future.

The term ‘quantum system’ is used to describe a system which is governed by the laws of quantum mechanics, as opposed to being governed by the classical laws of physics such as mechanics, gravity and Einstein’s general theory of relativity. Quantum mechanics comes into play when systems are the size of atoms or smaller, because on this very small scale the conventional laws of mechanics no longer apply. Quantum computing devices of the future, which have not yet been successfully created, will rely on scientists harnessing quantum behaviour to create systems that can far exceed the speed and processing capabilities of current silicon-based computers.

The study, published in Nature Physics, shows that a device can be built which is able to simulate the behaviour of atoms and other particles according to the laws of quantum physics. The proposed simulator would consist of atoms and photons – particles of light – in an array of very small silicon cavities, measuring just 50 micrometres across. The researchers show that the atoms and photons inside the cavities would form a strongly-interacting many-body system, with photons jumping from cavity to cavity, and at the same time being scattered off each other – all examples of quantum behaviour.

Dr Michael J Hartmann, who led the study along with his colleagues Mr. Fernando Brandão and Professor Martin Plenio from Imperial College London’s Department of Physics and Institute for Mathematical Sciences, said: “Our research has successfully shown that it is possible to create a simulation of a system governed by the laws of quantum physics, in which scientists could have control of individual particles. This is a key theoretical discovery because in order to build the quantum computers of the future - which harness the power of atoms to perform calculations billions of times faster than normal computers – we will need to be able to manipulate quantum systems in this way.”

Professor Plenio adds: “In the short term the simulator could be used to test the capabilities of materials at the atomic and sub-atomic level when quantum physics governs atoms’ behaviour. In the very long run we anticipate that these kinds of simulators could potentially be used to create new materials with capabilities and characteristics which do not occur naturally.”

Laura Gallagher | alfa
Further information:
http://www.imperial.ac.uk

More articles from Physics and Astronomy:

nachricht Writing and deleting magnets with lasers
19.04.2018 | Helmholtz-Zentrum Dresden-Rossendorf

nachricht Ultrafast electron oscillation and dephasing monitored by attosecond light source
19.04.2018 | Yokohama National University

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

Im Focus: Basel researchers succeed in cultivating cartilage from stem cells

Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.

Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...

Im Focus: Like a wedge in a hinge

Researchers lay groundwork to tailor drugs for new targets in cancer therapy

In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...

Im Focus: The Future of Ultrafast Solid-State Physics

In an article that appears in the journal “Review of Modern Physics”, researchers at the Laboratory for Attosecond Physics (LAP) assess the current state of the field of ultrafast physics and consider its implications for future technologies.

Physicists can now control light in both time and space with hitherto unimagined precision. This is particularly true for the ability to generate ultrashort...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Diamond-like carbon is formed differently to what was believed -- machine learning enables development of new model

19.04.2018 | Materials Sciences

Electromagnetic wizardry: Wireless power transfer enhanced by backward signal

19.04.2018 | Physics and Astronomy

Ultrafast electron oscillation and dephasing monitored by attosecond light source

19.04.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>