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Primeur weekly 2017-01-30

Exascale supercomputing

Co-design centres to help make next-generation exascale computing a reality ...

Quantum computing

Supercool electrons ...

D-Wave announces D-Wave 2000Q quantum computer and first system order ...

Temporal Defense Systems purchases the first D-Wave 2000Q quantum computer ...

Fast track control accelerates switching of quantum bits ...

Focus on Europe

Bright Computing teams up with SGI to co-sponsor UK HPC & Big Data event ...

When life sciences become data sciences ...

PRACE Spring School 2017 - HPC for Life Sciences, registration is open ...

ITER and BSC tighten their collaboration to simulate the process of fusion power generation ...

Netherlands eScience Center to issue annual report ...

Middleware

BSC releases PyCOMPSs version 2.0 as a PIP installable package ...

Hardware

RSC gets the highest Elite status in the Intel Solutions for Lustre Reseller Programme ...

Finding a needle in the ocean ...

GIGABYTE selects Cavium QLogic 10/25GbE FastLinQ technology to power its next generation servers ...

Setting up light paths using the SURFnet Network Dashboard ...

Minerva will calculate gravitational waves faster than the Albert Einstein Institute's previous supercomputer ...

Applications

Big Brother will have some difficulty 'watching you' in future ...

Engineers eat away at Ms. Pac-Man score with artificial player ...

Mummy visualization impresses in computer journal ...

Berkeley launches RISELab, enabling computers to make intelligent real-time decisions ...

Model sheds light on inhibitory neurons' computational role ...

Using Big Data to understand immune system responses ...

Artificial intelligence uncovers new insight into biophysics of cancer ...

PPPL scientist uncovers physics behind plasma-etching process ...

Computer-aided drug design ...

IBM expands choices for PowerAI developers with TensorFlow ...

Hussein Aluie awarded hours on supercomputer at Argonne ...

CWI develops algorithms that shorten response time of ambulance ...

A rising peptide: Supercomputing helps scientists come closer to tailoring drug molecules ...

The Cloud

Oracle expands Startup Accelerator Programme to further promote global Cloud innovation ...

Technical computing hub UberCloud receives funding from Earlybird ...

Supercool electrons


Current and former members of the Quantum Dynamics Unit at OIST. From left to right: Dr. Oleksandr Smorodin, Dr. Alexander Badrutdinov, Professor Denis Konstantinov, and OIST Ph.D. student Jui-Yin Lin. Credit: Sarah Wong.
24 Jan 2017 Okinawa - The future of quantum computing is a hot topic not only for experts but also in many commercial and governmental agencies. Rather than processing and storing information as bits in transistors or memories, which limit information to the binary '1' or '0', quantum computers would instead use quantum systems, such as atoms, ions, or electrons, as 'qubits' to process and store "quantum information" in, which can be in an infinite number of combinations of '1 and 0'.

Large technology corporations, such as Google, Microsoft, Intel, and IBM are investing heavily in related projects that may lead to realize the quantum computer and technologies. At the same time, universities and research institutes around the world are researching novel quantum systems, adoptable for quantum computing. The Quantum Dynamics Unit at the Okinawa Institute of Science and Technology Graduate University (OIST), has recently made novel findings about electrons floating on the surface of liquid helium, a quantum system which may be a new candidate for quantum computing into reality. These results were published in Physical Review B .

One of the common problems in quantum computing research using solids is that it is very difficult to make perfectly identical qubits because intrinsic defects or impurities in the materials used randomly affect each individual qubit performance. "Our motivation for pursuing a liquid helium system is that it is intrinsically pure and free of defects, which theoretically allows for the creation of perfectly identical qubits. Additionally, we can move electrons in this liquid helium system, which is difficult or nearly impossible in other quantum systems", explained Prof. Denis Konstantinov, head of the Quantum Dynamics Unit. Therefore, it is believed that adopting this system for quantum computing might bring the whole field to the next level.

Utilizing electrons on a liquid helium surface for quantum computing requires isolating individual electrons on a helium surface and controlling their quantum degrees of freedom, either motional or spin. It may also require the movement of electrons to different locations, thus it is also important to understand the physics of the interaction between electrons and the helium surface. It was previously discovered that electrons on helium can form a two-dimensional crystal, and some unique phenomena occur when this crystal moves along the helium surface, due to the interaction between electrons and surface waves.

The OIST scientists, however, are the first to probe how these phenomena depend on the size of the electron crystal. To test this, Dr. Alexander Badrutdinov, Dr. Oleksandr Smorodin and OIST PhD student Jui-Yin Lin, built a microscopic channel device that contained an electron trap within to isolate a crystal of a relatively small number of electrons. This crystal would then be moved across the liquid helium surface by altering electrostatic potential of one of the device electrodes. This motion would be detected by measuring image charges, which are induced by the moving electrons, flowing through another electrode using a commercially available current amplifier and lock-in detector.

"This research gave us some insights into the physics of the interaction between electrons and the helium surface, as well as expanded our micro-engineering capabilities", stated Dr. Alexander Badrutdinov, a former member of the Quantum Dynamics Unit and the first author of the paper. "We successfully adopted a technology to confine electrons into microscopic devices, on the scale of few microns. With this technology we studied the motion of microscopic two-dimensional electron crystals along a liquid helium surface and saw no difference between the movement of large electron crystals, on the scale of millions to billions of electrons, and crystals as small as a few thousands of electrons, when theoretically, differences should exist".

This research is the first step at OIST in the prospect of using this system for quantum computing. According to Denis Konstantinov, "the next step in this research is to isolate an even smaller electron crystal, and ultimately, a single electron, and to move them in this system. Unlike other systems, this system has the potential to be a pure, scalable system with mobile qubits". In theory, this type of system would have the potential to revolutionize the quantum computing research field.

Source: Okinawa Institute of Science andTechnology (OIST) Graduate University

Back to Table of contents

Primeur weekly 2017-01-30

Exascale supercomputing

Co-design centres to help make next-generation exascale computing a reality ...

Quantum computing

Supercool electrons ...

D-Wave announces D-Wave 2000Q quantum computer and first system order ...

Temporal Defense Systems purchases the first D-Wave 2000Q quantum computer ...

Fast track control accelerates switching of quantum bits ...

Focus on Europe

Bright Computing teams up with SGI to co-sponsor UK HPC & Big Data event ...

When life sciences become data sciences ...

PRACE Spring School 2017 - HPC for Life Sciences, registration is open ...

ITER and BSC tighten their collaboration to simulate the process of fusion power generation ...

Netherlands eScience Center to issue annual report ...

Middleware

BSC releases PyCOMPSs version 2.0 as a PIP installable package ...

Hardware

RSC gets the highest Elite status in the Intel Solutions for Lustre Reseller Programme ...

Finding a needle in the ocean ...

GIGABYTE selects Cavium QLogic 10/25GbE FastLinQ technology to power its next generation servers ...

Setting up light paths using the SURFnet Network Dashboard ...

Minerva will calculate gravitational waves faster than the Albert Einstein Institute's previous supercomputer ...

Applications

Big Brother will have some difficulty 'watching you' in future ...

Engineers eat away at Ms. Pac-Man score with artificial player ...

Mummy visualization impresses in computer journal ...

Berkeley launches RISELab, enabling computers to make intelligent real-time decisions ...

Model sheds light on inhibitory neurons' computational role ...

Using Big Data to understand immune system responses ...

Artificial intelligence uncovers new insight into biophysics of cancer ...

PPPL scientist uncovers physics behind plasma-etching process ...

Computer-aided drug design ...

IBM expands choices for PowerAI developers with TensorFlow ...

Hussein Aluie awarded hours on supercomputer at Argonne ...

CWI develops algorithms that shorten response time of ambulance ...

A rising peptide: Supercomputing helps scientists come closer to tailoring drug molecules ...

The Cloud

Oracle expands Startup Accelerator Programme to further promote global Cloud innovation ...

Technical computing hub UberCloud receives funding from Earlybird ...