The piece, entitled, "Optimal Control of Quantum Rings by Terahertz Laser Pulses" (1), proposes new annular structures (quantum rings) to define a qbit, i.e. the unit of information of quantum computers.. The work has been undertaken in collaboration with the Freie-Universität of Berlin and the research team there under university teacher, Eberhard K.U. Gross.
Unlike the binary bit of current computers which only has two possible states – 0 or 1 – the unit of measurement of quantic computers is the qbit which uses a much more complex logic involving multiple states, enabling the much more efficient processing of information. There are many proposed applications for the qbit, some based on quantic points embedded in matrixes, others on magnetic molecules, others on cold atoms, and so on. The UPV/EHU researchers propose a new system based on the interaction of laser light with a metallic structure in the form of a ring and which has been written on lithographically. The advantages of the system are its simplicity and its economy, given that its quantic state can be precisely controlled with light and the technique can be integrated into current electronic structures. Ángel Rubio and his team are currently working on a combination of a number of these structures so that they may interact and operations can be carried out.
This is the fourth research article published by Ángel Rubio in "Physical Review Letters" within the space of a year.
Ángel Rubio is lecturer in the Physics of Condensed Matter at the Faculty of Chemical Sciences at the UPV/EHU, a member of the Donostia Physics Center and an associate of the CSIC-UPV/EHU Physics of Materials Mixed Centre. His research activity is internationally recognised and he has received many awards, notable amongst which are the Award from the Sociedad Española de Física for young researchers (1992); the Friedrich Wilhelm Bessel research prize from the Humboldt Foundation (2005) and the DuPont Award for Science (2006).
(1) E. Räsänen, A. Castro, J. Werschnik, A. Rubio, and E. K. U. Gross Optimal Laser-Control of Quantum Rings, (Physical Review Letters (Vol.98, No.15).
Irati Kortabitarte | alfa
First chip-scale broadband optical system that can sense molecules in the mid-IR
24.05.2018 | Columbia University School of Engineering and Applied Science
Nuclear physicists leap into quantum computing with first simulations of atomic nucleus
24.05.2018 | DOE/Oak Ridge National Laboratory
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
24.05.2018 | Ecology, The Environment and Conservation
24.05.2018 | Medical Engineering
24.05.2018 | Physics and Astronomy