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Primeur weekly 2019-07-01

Exascale supercomputing

PASC19: Preparing for "Exascale and Beyond" ...

Crowd computing

Science enthusiasts, researchers, and students benefit from volunteer computing using BOINC@TACC ...

Quantum computing

Researchers teleport information within a diamond ...

D-Wave announces quantum hybrid strategy and general availability of D-Wave Hybrid ...

Focus on Europe

The brain as an inspiration for future processors ...

IT4Innovations will host a EuroHPC petascale system ...

Four public-private projects on Big Data and health have been awarded grants ...

Middleware

WekaIO recognized for innovation with 2019 Artificial Intelligence Breakthrough Award ...

Hardware

Carnegie Mellon University among first to pilot new Perlmutter supercomputer ...

Supermicro introduces industry's first server & storage systems supporting EDSFF - First compact open industry standard for All-Flash NVMe optimized storage ...

InAccel releases world's first FPGA orchestrator ...

InAccel releases open-source Logistic Regression IP core for FPGAs ...

Jack Wells to help strengthen OpenACC User Community ...

Titan, a workhorse supercomputer for the scientific community retires August 1, 2019 ...

K computer remains yokozuna of the Graph500 ranking ...

Applications

AVSimulation and ANSYS speed development of safe autonomous driving for automakers ...

Machine learning reveals how strongly interacting electrons behave at atomic level ...

Researchers use machine learning to more quickly analyze key capacitor materials ...

TOP500

InfiniBand accelerates top three supercomputers in the world; HDR 200Gb/s InfiniBand makes debut on TOP500 list ...

The Cloud

New Oracle Autonomous Database Dedicated deployment eliminates roadblocks to moving enterprise databases to the Autonomous Cloud ...

Oracle ushers in new era of analytics ...

Atos enhances AMOS Platform to accelerate enterprise modernization from legacy to Open Source platforms ...

Researchers teleport information within a diamond


The lattice structure of diamond contains a nitrogen-vacancy centre with surrounding carbons. A carbon isotope (green) is first entangled with an electron (blue) in the vacancy, which then wait for a photon (red) to absorb, resulting in quantum teleportation-based state transfer of the photon into the carbon memory. Credit: Yokohama National University.
28 Jun 2019 Yokohama - Researchers from the Yokohama National University have teleported quantum information securely within the confines of a diamond. The study has big implications for quantum information technology - the future of how sensitive information is shared and stored.

The researchers published their results on June 28, 2019 in Communications Physics .

"Quantum teleportation permits the transfer of quantum information into an otherwise inaccessible space", stated Hideo Kosaka, a professor of engineering at Yokohama National University and an author on the study. "It also permits the transfer of information into a quantum memory without revealing or destroying the stored quantum information."

The inaccessible space, in this case, consisted of carbon atoms in diamond. Made of linked, yet individually contained, carbon atoms, a diamond holds the perfect ingredients for quantum teleportation.

A carbon atom holds six protons and six neutrons in its nucleus, surrounded by six spinning electrons. As the atoms bond into a diamond, they form a notoriously strong lattice. Diamonds can have complex defects, though, when a nitrogen atom exists in one of two adjacent vacancies where carbon atoms should be. This defect is called a nitrogen-vacancy centre.

Surrounded by carbon atoms, the nucleus structure of the nitrogen atom creates what Hideo Kosaka calls a nanomagnet.

To manipulate an electron and a carbon isotope in the vacancy, Hideo Kosaka and the team attached a wire about a quarter the width of a human hair to the surface of a diamond. They applied a microwave and a radio wave to the wire to build an oscillating magnetic field around the diamond. They shaped the microwave to create the optimal, controlled conditions for the transfer of quantum information within the diamond.

Hideo Kosaka then used the nitrogen nanomagnet to anchor an electron. Using the microwave and radio waves, Hideo Kosaka forced the electron spin to entangle with a carbon nuclear spin - the angular momentum of the electron and the nucleus of a carbon atom. The electron spin breaks down under a magnetic field created by the nanomagnet, allowing it to become susceptible to entanglement. Once the two pieces are entangled, meaning their physical characteristics are so intertwined they cannot be described individually, a photon which holds quantum information is applied and the electron absorbs the photon. The absorption allows the polarization state of the photon to be transferred into the carbon, which is mediated by the entangled electron, demonstrating a teleportation of information at the quantum level.

"The success of the photon storage in the other node establishes the entanglement between two adjacent nodes", Hideo Kosaka stated. Called quantum repeaters, the process can take individual chunks of information from node to node, across the quantum field.

"Our ultimate goal is to realize scalable quantum repeaters for long-haul quantum communications and distributed quantum computers for large-scale quantum computation and metrology", Hideo Kosaka stated.

The rest of the team from Hideo Kosaka's laboratory at Yokohama National University who contributed to this paper are Kazuya Tsurumoto, Ryota Kuroiwa, Hiroki Kano, and Yuhei Sekiguchi.

Source: Yokohama National University

Back to Table of contents

Primeur weekly 2019-07-01

Exascale supercomputing

PASC19: Preparing for "Exascale and Beyond" ...

Crowd computing

Science enthusiasts, researchers, and students benefit from volunteer computing using BOINC@TACC ...

Quantum computing

Researchers teleport information within a diamond ...

D-Wave announces quantum hybrid strategy and general availability of D-Wave Hybrid ...

Focus on Europe

The brain as an inspiration for future processors ...

IT4Innovations will host a EuroHPC petascale system ...

Four public-private projects on Big Data and health have been awarded grants ...

Middleware

WekaIO recognized for innovation with 2019 Artificial Intelligence Breakthrough Award ...

Hardware

Carnegie Mellon University among first to pilot new Perlmutter supercomputer ...

Supermicro introduces industry's first server & storage systems supporting EDSFF - First compact open industry standard for All-Flash NVMe optimized storage ...

InAccel releases world's first FPGA orchestrator ...

InAccel releases open-source Logistic Regression IP core for FPGAs ...

Jack Wells to help strengthen OpenACC User Community ...

Titan, a workhorse supercomputer for the scientific community retires August 1, 2019 ...

K computer remains yokozuna of the Graph500 ranking ...

Applications

AVSimulation and ANSYS speed development of safe autonomous driving for automakers ...

Machine learning reveals how strongly interacting electrons behave at atomic level ...

Researchers use machine learning to more quickly analyze key capacitor materials ...

TOP500

InfiniBand accelerates top three supercomputers in the world; HDR 200Gb/s InfiniBand makes debut on TOP500 list ...

The Cloud

New Oracle Autonomous Database Dedicated deployment eliminates roadblocks to moving enterprise databases to the Autonomous Cloud ...

Oracle ushers in new era of analytics ...

Atos enhances AMOS Platform to accelerate enterprise modernization from legacy to Open Source platforms ...