Back to Table of contents

Primeur weekly 2017-12-18

Exascale supercomputing

Mont-Blanc 2020 project will pave the way to a European scalable, modular and power efficient High Performance Computing processor ...

A supercomputer will discover our future medicines ...

Quantum computing

Jülich Supercomputing Centre to achieve world record: Quantum computer with 46 qubits simulated ...

DENSO and Toyota Tsusho to conduct a test applying a quantum computer to analyze IoT data with a commercial application ...

IBM announces collaboration with Fortune 500 companies, academic institutions and national research labs to accelerate quantum computing ...

Complete design of a silicon quantum computer chip unveiled ...

Error-free into the quantum computer age ...

Quantum memory with record-breaking capacity based on laser-cooled atoms ...

Physicists from Konstanz, Princeton and Maryland create a stable quantum gate as a basic element for the quantum computer ...

Physicists say rare earth metals could help quantum computers communicate ...

Focus on Europe

Lenovo and Intel to deliver powerful, energy-efficient SuperMUC-NG, next generation supercomputer at Leibniz Supercomputing Centre ...

North Rhine-Westphalia supports expansion of German national supercomputer infrastructure ...

ISC 2018 and PASC18 Conferences to announce partnership ...

Hardware

Intersect360 Research invites to participate in tenth HPC budget map survey ...

BP supercomputer now world's most powerful for commercial research ...

MareNostrum 4, chosen as the most beautiful data centre in the world ...

NCI welcomes $70 million investment in HPC capability ...

Applications

Physicists win supercomputing time to study fusion and the cosmos ...

Artificial intelligence helps accelerate progress toward efficient fusion reactions ...

Johns Hopkins scientists chart how brain signals connect to neurons ...

Artificial Intelligence and supercomputers to help alleviate urban traffic problems ...

ESnet's Petascale DTN project speeds up data transfers between leading HPC centres ...

A computer system needing less time and memory to simulate mechanical systems ...

Drug discovery could accelerate hugely with Machine Learning ...

The Cloud

Murex to offer MX.3 risk, trading and post-trade solutions on the AWS Cloud ...

Fujitsu develops WAN acceleration technology utilizing FPGA accelerators ...

Meituan.com selects Mellanox interconnect solutions to accelerate its artificial intelligence, Big Data and Cloud data centres ...

Mellanox interconnect solutions accelerate Tencent Cloud high-performance computing and artificial intelligence infrastructure ...

Error-free into the quantum computer age


Error-free into the Quantum Computer Age. Credit: H. Ritsch/IQOQI.
15 Dec 2017 Swansea - A study led by physicists at Swansea University in Wales, carried out by an international team of researchers and published in the journalPhysical Review Xshows that ion-trap technologies available today are suitable for building large-scale quantum computers. The scientists introduce trapped-ion quantum error correction protocols that detect and correct processing errors.

In order to reach their full potential, today's quantum computer prototypes have to meet specific criteria: First, they have to be made bigger, which means they need to consist of a considerably higher number of quantum bits. Second, they have to be capable of processing errors.

"We still fail in running complex computations because environmental noise and errors cause the system to get out of control", stated quantum physicist Rainer Blatt in Innsbruck. "By using quantum error correction, we can respond to this challenge better."

Classical computers use similar schemes to detect and correct errors during data storage and transfer: Before data is stored and transferred, redundancy is added to the data usually in the form of additional bits detecting and correcting errors. Scientists have developed comparable schemes for quantum computers, where quantum information is encoded in several entangled physical quantum bits.

"Here we exploit quantum mechanical properties for error detection and correction", explained Markus Müller from Swansea University, Wales. "If we can keep the noise below a certain threshold, we will be able to build quantum computers that can perform quantum computations of arbitrary complexity by increasing the number of entangled quantum bits accordingly."

Markus Müller and his colleague Alejandro Bermudez Carballo explained that in order to achieve this goal, the capabilities of the technological platforms have to be optimally exploited. "For beneficial error correction we need quantum circuits that are stable and work reliably under realistic conditions even if additional errors occur during the error correction", explained Alejandro Bermudez.

They introduced new variants of fault-tolerant protocols and investigated how these can be implemented with currently available operations on quantum computers. The researchers found that a new generation of segmented ion traps offers ideal conditions for the process: Ions can be shuttled quickly across different segments of the trap array. Precisely timed processes allow parallel operations in different storage and processing regions. By using two different types of ions in a trap, scientists may use one type as carriers of the data qubits while the other one may be used for error measurement, noise suppression and cooling.

Building on the experimental experience of research groups in Innsbruck, Mainz, Zurich und Sydney the researchers defined criteria that will allow the scientists to determine whether the quantum error correction is beneficial. By using this information they can guide the development of future ion-trap quantum computers with the goal to realize a logical quantum bit in the near future that, owed to error correction, exceeds the properties of a pure physical quantum bit.

Simon Benjamin's research group at the University of Oxford showed through complex numerical simulations of the new error correction protocols how the hardware of next generation ion-trap quantum computers has to be built to be able to process information fault-tolerantly. "Our numerical results clearly show that state-of-the-art ion-trap technologies are well suited to serve as platforms for constructing large-scale fault-tolerant quantum computers", explained Simon Benjamin.

The paper titled " Assessing the progress of trapped-ion processors towards fault-tolerant quantum computation " is authored by A. Bermudez, X. Xu, R. Nigmatullin, J. O'Gorman, V. Negnevitsky, P. Schindler, T. Monz, U. G. Poschinger, C. Hempel, J. Home, F. Schmidt-Kaler, M. Biercuk, R. Blatt, S. Benjamin, and M. Müller. It was published inPhysical Review X7, 041061 (2017).

Source: Swansea University

Back to Table of contents

Primeur weekly 2017-12-18

Exascale supercomputing

Mont-Blanc 2020 project will pave the way to a European scalable, modular and power efficient High Performance Computing processor ...

A supercomputer will discover our future medicines ...

Quantum computing

Jülich Supercomputing Centre to achieve world record: Quantum computer with 46 qubits simulated ...

DENSO and Toyota Tsusho to conduct a test applying a quantum computer to analyze IoT data with a commercial application ...

IBM announces collaboration with Fortune 500 companies, academic institutions and national research labs to accelerate quantum computing ...

Complete design of a silicon quantum computer chip unveiled ...

Error-free into the quantum computer age ...

Quantum memory with record-breaking capacity based on laser-cooled atoms ...

Physicists from Konstanz, Princeton and Maryland create a stable quantum gate as a basic element for the quantum computer ...

Physicists say rare earth metals could help quantum computers communicate ...

Focus on Europe

Lenovo and Intel to deliver powerful, energy-efficient SuperMUC-NG, next generation supercomputer at Leibniz Supercomputing Centre ...

North Rhine-Westphalia supports expansion of German national supercomputer infrastructure ...

ISC 2018 and PASC18 Conferences to announce partnership ...

Hardware

Intersect360 Research invites to participate in tenth HPC budget map survey ...

BP supercomputer now world's most powerful for commercial research ...

MareNostrum 4, chosen as the most beautiful data centre in the world ...

NCI welcomes $70 million investment in HPC capability ...

Applications

Physicists win supercomputing time to study fusion and the cosmos ...

Artificial intelligence helps accelerate progress toward efficient fusion reactions ...

Johns Hopkins scientists chart how brain signals connect to neurons ...

Artificial Intelligence and supercomputers to help alleviate urban traffic problems ...

ESnet's Petascale DTN project speeds up data transfers between leading HPC centres ...

A computer system needing less time and memory to simulate mechanical systems ...

Drug discovery could accelerate hugely with Machine Learning ...

The Cloud

Murex to offer MX.3 risk, trading and post-trade solutions on the AWS Cloud ...

Fujitsu develops WAN acceleration technology utilizing FPGA accelerators ...

Meituan.com selects Mellanox interconnect solutions to accelerate its artificial intelligence, Big Data and Cloud data centres ...

Mellanox interconnect solutions accelerate Tencent Cloud high-performance computing and artificial intelligence infrastructure ...