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Primeur weekly 2016-07-25

Special

SpiNNaker and BrainScaleS neuromorphic systems ready for non-expert use in stochastic inference computing ...

Beyond Moore's Law panelists address business maturity of new technologies, future developments, neuromorphic chip training, and memristors ...

Focus

D-Wave works with its customers Lockheed, Google and Los Alamos to design better quantum software ...

Altair's Bill Nitzberg to present PBS Pro open source license version, PBS Simulator and PBS Cloud Manager ...

Quantum computing

Russian physicists discover a new approach for building quantum computers ...

RMIT researchers make leap in measuring quantum states ...

Focus on Europe

Guiding EU researchers along the last mile to Open Digital Science ...

Digital Humanities and Urban Climate proposals win NLeSC-Lorentz Workshop competition ...

European Horizon 2020 Work Programme update supports competitiveness through open science ...

6th Irish Supercomputer List shows Irish HPC capacity doubles with new no. 1 and three new TOP500-class machines ...

PRACE to look for Peer-Review Officer ...

7th International HPC Summer School took place in Ljubljana, Slovenia ...

Middleware

Inria joins the OpenMP ARB ...

Hardware

Gigabyte announces official release of production-ready Cavium ThunderX-based servers ...

The University of Tokyo selects Mellanox EDR InfiniBand to accelerate its newest supercomputer ...

Smallest hard disk to date writes information atom by atom ...

A mini-antenna for the data processing of tomorrow ...

Hangzhou C-SKY Microsystems joins EEMBC Executive Board ...

Electron spin control: Levitated nanodiamond is research gem ...

The Scripps Research Institute leverages powerful end-to-end DDN storage to help reveal secrets to new medical treatments ...

Applications

MSC Software partners with Italian Campania Region Technological Aerospace District for the development of aeronautical programmes ...

Deloitte Advisory Cyber Risk Services and Cray offer advanced Cyber Reconnaissance and Analytics services ...

Strathclyde mathematician wins prize for research into speeding up stroke diagnosis ...

Underlying molecular networks suggest new targets to combat brain cancer ...

An accelerated pipeline to open materials research ...

Rice wins interdisciplinary Big Data grant ...

Study uses text-mining to improve market intelligence on startups ...

The Cloud

The HNSciCloud Pre-Commercial Procurement tender is out: you can bid now ...

CSC and IBM expand strategic alliance with collaboration utilizing IBM Cloud for z to enable clients' move to Cloud ...

Electron spin control: Levitated nanodiamond is research gem

This is a schematic of an optical tweezer used in a vacuum chamber by Purdue University researchers, who controlled the "electron spin" of a levitated nanodiamond. The advance could find applications in quantum information processing, sensors and studies into the fundamental physics of quantum mechanics. Credit: Purdue University image/Tongcang Li.19 Jul 2016 West Lafayette - Researchers have demonstrated how to control the "electron spin" of a nanodiamond while it is levitated with lasers in a vacuum, an advance that could find applications in quantum information processing, sensors and studies into the fundamental physics of quantum mechanics.

Electrons can be thought of as having two distinct spin states, "up" or "down". The researchers were able to detect and control the electron spin resonance, or its change from one state to the other.

"We've shown how to continuously flip the electron spin in a nanodiamond levitated in a vacuum and in the presence of different gases", stated Tongcang Li, an assistant professor of physics and astronomy and electrical and computer engineering at Purdue University.

Findings are detailed in a research paper being published on July 19 in the journalNature Communications. The electron spin resonance was shown to differ in the presence of helium and oxygen gases, meaning the technique could be used in a new type of sensor to detect and measure gases. Oxygen gas sensors are extensively used to monitor the oxygen concentration in automotive exhaust and in medical instruments such as anesthesia monitors and respirators. Nanodiamond-based sensors represent a potential improvement over conventional sensors.

"While more detailed studies are required to fully understand this phenomenon, our observation suggests a potential application for oxygen gas sensing", Tongcang Li stated.

The paper was authored by postdoctoral research associate Thai Hoang; doctoral students Jonghoon Ahn and Jaehoon Bang; and Tongcang Li.

The levitating nanodiamonds also could find uses in quantum information processing, experimental techniques to probe fundamental physics in quantum mechanics, and the measurement of magnetic and gravitational fields, which could be applied to computer memory and experiments to search for deviations from Newton's law of gravitation.

Levitating the nanodiamonds in a vacuum enables precise control and rigorous measurement of the floating particles. The nanodiamonds are about 100 nanometers in diameter, or roughly the size of a virus, and contain "nitrogen vacancy centers" critical to potential practical applications. A nitrogen-vacancy centre is an atomic-scale defect formed in the diamond lattice by substituting a nitrogen atom for a carbon atom and creating a neighbouring void in the crystal lattice. Researchers can exploit this feature to control the electron spin.

One type of laser was used to "trap" and levitate the nanoparticle in a vacuum chamber, and another was used to monitor the electron spin. A millimeter-scale antenna delivers microwaves to control and flip the electron spin, and a spectrometer detects these changes in spin. A vacuum is needed to reduce interference from air molecules.

Quantum computers would take advantage of phenomena described by quantum theory called "superposition" and "entanglement". Computers based on quantum physics might dramatically increase the capacity to process, store and transmit information. One long-term goal of the Purdue research is to use the technique to test the famous Schrödinger's cat thought experiment, in which a cat may be both dead and alive at the same time.

"We want to put a single nanodiamond at two different locations at the same time", Tongcang Li stated.

The research was supported by the National Science Foundation.

The paper is titled " Electron spin control of optically levitated nanodiamonds in vacuum ". A Youtube video is available at https://youtu.be/0GX2z7OoIDI .
Source: Purdue University

Back to Table of contents

Primeur weekly 2016-07-25

Special

SpiNNaker and BrainScaleS neuromorphic systems ready for non-expert use in stochastic inference computing ...

Beyond Moore's Law panelists address business maturity of new technologies, future developments, neuromorphic chip training, and memristors ...

Focus

D-Wave works with its customers Lockheed, Google and Los Alamos to design better quantum software ...

Altair's Bill Nitzberg to present PBS Pro open source license version, PBS Simulator and PBS Cloud Manager ...

Quantum computing

Russian physicists discover a new approach for building quantum computers ...

RMIT researchers make leap in measuring quantum states ...

Focus on Europe

Guiding EU researchers along the last mile to Open Digital Science ...

Digital Humanities and Urban Climate proposals win NLeSC-Lorentz Workshop competition ...

European Horizon 2020 Work Programme update supports competitiveness through open science ...

6th Irish Supercomputer List shows Irish HPC capacity doubles with new no. 1 and three new TOP500-class machines ...

PRACE to look for Peer-Review Officer ...

7th International HPC Summer School took place in Ljubljana, Slovenia ...

Middleware

Inria joins the OpenMP ARB ...

Hardware

Gigabyte announces official release of production-ready Cavium ThunderX-based servers ...

The University of Tokyo selects Mellanox EDR InfiniBand to accelerate its newest supercomputer ...

Smallest hard disk to date writes information atom by atom ...

A mini-antenna for the data processing of tomorrow ...

Hangzhou C-SKY Microsystems joins EEMBC Executive Board ...

Electron spin control: Levitated nanodiamond is research gem ...

The Scripps Research Institute leverages powerful end-to-end DDN storage to help reveal secrets to new medical treatments ...

Applications

MSC Software partners with Italian Campania Region Technological Aerospace District for the development of aeronautical programmes ...

Deloitte Advisory Cyber Risk Services and Cray offer advanced Cyber Reconnaissance and Analytics services ...

Strathclyde mathematician wins prize for research into speeding up stroke diagnosis ...

Underlying molecular networks suggest new targets to combat brain cancer ...

An accelerated pipeline to open materials research ...

Rice wins interdisciplinary Big Data grant ...

Study uses text-mining to improve market intelligence on startups ...

The Cloud

The HNSciCloud Pre-Commercial Procurement tender is out: you can bid now ...

CSC and IBM expand strategic alliance with collaboration utilizing IBM Cloud for z to enable clients' move to Cloud ...