Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > Error-free into the quantum computer age

Error-free into the Quantum Computer Age.
CREDIT
H. Ritsch/IQOQI
Error-free into the Quantum Computer Age. CREDIT H. Ritsch/IQOQI

Abstract:
A study led by physicists at Swansea University in Wales, carried out by an international team of researchers and published in the journal Physical Review X shows 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.

Error-free into the quantum computer age

Swansea, UK | Posted on December 15th, 2017

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," says 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," explains 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."

Trapping ions in a maze

Markus Müller and his colleague Alejandro Bermudez Carballo explain 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," explains 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.

A new generation of quantum computers

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," explains Benjamin.

####

For more information, please click here

Contacts:
Mari Hooson

01-792-513-455

Copyright © Swansea University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Publication:

Related News Press

News and information

Nanometrics to Announce Fourth Quarter and Full Year Financial Results on February 5, 2019 January 18th, 2019

ULVAC Inc., and Oxford Instruments Plasma Technology collaborate to bring Atomic Scale Processing solutions to the Japanese Power and RF markets January 18th, 2019

Kiel physicists discover new effect in the interaction of plasmas with solids January 18th, 2019

Brilliant glow of paint-on semiconductors comes from ornate quantum physics January 18th, 2019

Quantum communication

Satellite study proves global quantum communication will be possible December 28th, 2018

National Quantum Initiative Act Passes Congress December 24th, 2018

An important step towards completely secure quantum communication networks November 30th, 2018

2-D magnetism: Atom-thick platforms for energy, information and computing research: Scientists say the tiny 'spins' of electrons show potential to one day support next-generation innovations in many fields October 31st, 2018

Possible Futures

Kiel physicists discover new effect in the interaction of plasmas with solids January 18th, 2019

Brilliant glow of paint-on semiconductors comes from ornate quantum physics January 18th, 2019

Nanobiotix Plans to Conduct Registered Public Offering in the United States January 17th, 2019

Power stations driven by light: More efficient solar cells imitate photosynthesis January 16th, 2019

Chip Technology

Nanometrics to Announce Fourth Quarter and Full Year Financial Results on February 5, 2019 January 18th, 2019

Kiel physicists discover new effect in the interaction of plasmas with solids January 18th, 2019

Brilliant glow of paint-on semiconductors comes from ornate quantum physics January 18th, 2019

Light up logic: Engineers from UTokyo and RIKEN perform computational logic with light January 18th, 2019

Discoveries

Using bacteria to create a water filter that kills bacteria: New technology can clean water twice as fast as commercially available ultrafiltration membranes January 18th, 2019

Kiel physicists discover new effect in the interaction of plasmas with solids January 18th, 2019

Brilliant glow of paint-on semiconductors comes from ornate quantum physics January 18th, 2019

Light up logic: Engineers from UTokyo and RIKEN perform computational logic with light January 18th, 2019

Announcements

Nanometrics to Announce Fourth Quarter and Full Year Financial Results on February 5, 2019 January 18th, 2019

ULVAC Inc., and Oxford Instruments Plasma Technology collaborate to bring Atomic Scale Processing solutions to the Japanese Power and RF markets January 18th, 2019

Kiel physicists discover new effect in the interaction of plasmas with solids January 18th, 2019

Brilliant glow of paint-on semiconductors comes from ornate quantum physics January 18th, 2019

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Using bacteria to create a water filter that kills bacteria: New technology can clean water twice as fast as commercially available ultrafiltration membranes January 18th, 2019

Kiel physicists discover new effect in the interaction of plasmas with solids January 18th, 2019

Brilliant glow of paint-on semiconductors comes from ornate quantum physics January 18th, 2019

New materials could help improve the performance of perovskite solar cells January 11th, 2019

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project