Topological randomness may be the answer for lossless electronics and making the nuts and bolts of quantum computers
Topological randomness may be the answer for lossless electronics and making the nuts and bolts of quantum computers. Complete randomness in the structures of superconductors and insulators could lower the requirements of pristine crystalline ordering - and make them more accessible to industry.
Designing quantum materials with exotic and unprecedented electrical properties has the field of physics teeming with buzz. Researchers at Aalto University in Finland have now introduced a significant turn in this discussion by developing an amorphous material which exhibits topological superconductivity. Until this point, these materials have required highly regular structures to show desired electrical properties.
The findings, published in Nature Communications, bring the field one step closer to application. Topological superconductors and insulators are considered to be possible building blocks of lossless components for quantum computers. While topological superconductors might not exist in nature, they can be fabricated, as the study demonstrates.
'We have presented a method of fabricating topological materials in amorphous systems with randomly placed constituents. This means we can achieve superconductivity in the material by sprinkling magnetic atoms on a superconducting surface completely at random, not in highly-defined and ornamented lattices, for example,' explains doctoral student Kim Pöyhönen.
The recent boom on topological superconductors stems mainly from an unconventional quantum-level phenomenon, a collective movement of many individual particles called Majorana fermion excitations. They have been envisioned as critical ingredients of topological quantum computers.
'Getting highly irregular, random systems to work as topological superconductors will potentially make their fabrication and manufacture much more convenient compared to current methods,' says research group leader, Docent Teemu Ojanen.
Perhaps for now, the implications of the random quantum material verge only on fundamental research, but that might not be the case for much longer.
'For topological quantum matter to find its way to actual applications, it's imperative we find even more new candidates for amorphous topological materials,' states Ojanen.
Teemu Ojanen | EurekAlert!
Researchers discover link between magnetic field strength and temperature
21.08.2018 | American Institute of Physics
Smallest transistor worldwide switches current with a single atom in solid electrolyte
17.08.2018 | Karlsruher Institut für Technologie (KIT)
There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.
The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
21.08.2018 | Power and Electrical Engineering
21.08.2018 | Life Sciences
21.08.2018 | Medical Engineering