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Primeur weekly 2019-03-04

Focus

Belgium to contribute 5 million euro to Finnish led pre-exascale EuroHPC consortium ...

Crowd computing

Crowd computing network delves into protein structure and seeks new disease therapies ...

Quantum computing

Bosch and QuSoft start quantum computing collaboration ...

Faster method to read quantum memory ...

'Immunizing' quantum bits so that they can grow up ...

D-Wave previews next-generation quantum computing platform ...

Intel drives development of quantum cryoprober with Bluefors and Afore to accelerate quantum computing ...

Researchers move closer to practical photonic quantum computing ...

Focus on Europe

ISC 2019 keynotes will reflect challenges and opportunities ahead ...

Middleware

Western Digital uses Univa HPC Cloud solutions on Amazon Web Services to build million core cluster, improving business competitive advantage ...

Univa offers new support services to Open Source Grid Engine users ...

Hardware

Analytics market leaders DDN Storage and SQream partnering to deliver accelerated business decisions ...

Panasas announces new growth investment and additions to its Board of Directors ...

Fujitsu launches industry's first 600G hyperscale optical transport solution, empowering tomorrow's high-speed networks ...

VAST Data unveils its universal storage architecture to bring an end to the enterprise HDD and storage tiering era ...

Global High Performance Computing (HPC) Market 2019-2024 by Component, Infrastructure, Services, Price Band, HPC Applications, and Deployment Type ...

Applications

Stampede2 and Maverick systems at TACC help power visualization of Arctic Ocean data ...

University at Buffalo names Abani Patra to lead Center for Computational Research ...

Supercomputing enables sound prediction model for controlling noise ...

The Cloud

Mellanox propels JD Cloud to new levels of performance and efficiency ...

National Science Foundation funds second round for OSC's Open OnDemand ...

Faster method to read quantum memory


By using two separate microwaves, the two states of the qubit can be separated faster. The two quantum states, here represented by red and blue arrows, separate faster and can be read quicker when the system is pulsed with two microwaves. Credit: Aalto University.
25 Feb 2019 Aalto - The potential computing revolution that quantum computers have long promised is based on their weird property called superposition. Namely, qubits can take both logical states 0 and 1 simultaneously, on top of any value in between. By mastering superpositions of the whole quantum memory, quantum computers can quickly solve problems that would require too much computing time from regular computers working with simply 0s and 1s.

However, qubits are sensitive, and currently hold quantum information for less than a millisecond at a time, even when kept frozen at temperatures colder than the dark side of the moon. To extract any useful information, the method that reads information from qubits must take the least amount of time as possible, allowing as few errors as possible.

Joni Ikonen, a PhD student at Aalto University, has developed a new method that helps do just that. Until now, the method used to read information from a qubit was to apply a short microwave pulse to the superconducting circuit containing the qubit and then measure the reflected microwave. After 300 nanoseconds, the state of the qubit can be deduced from the behaviour of the reflected signal.

The new method applies an extra microwave pulse at the same time to the qubit itself, as well as to the circuit attached to the qubit. By using two pulses instead of one, the team at Aalto was able to make the reflected pulse reveal qubit states substantially faster than when they only applied a single pulse.

"We were able to complete the readout in 300 nanoseconds in our first experiments, but we think that going below 100 nanoseconds is just around the corner", stated Joni Ikonen.

By improving the speed and accuracy of the information retrieved from qubits, scientists may be able to move closer to realising the promise of useful quantum computing.

"This is an amazing result in getting the slippery qubits in order. I hope that it will help the community in the future to reach quantum supremacy and error correction, the path to a quantum computer of practical value", stated Dr. Möttönen, who co-supervised the work with Dr. Jan Goetz.

Source: Aalto University

Back to Table of contents

Primeur weekly 2019-03-04

Focus

Belgium to contribute 5 million euro to Finnish led pre-exascale EuroHPC consortium ...

Crowd computing

Crowd computing network delves into protein structure and seeks new disease therapies ...

Quantum computing

Bosch and QuSoft start quantum computing collaboration ...

Faster method to read quantum memory ...

'Immunizing' quantum bits so that they can grow up ...

D-Wave previews next-generation quantum computing platform ...

Intel drives development of quantum cryoprober with Bluefors and Afore to accelerate quantum computing ...

Researchers move closer to practical photonic quantum computing ...

Focus on Europe

ISC 2019 keynotes will reflect challenges and opportunities ahead ...

Middleware

Western Digital uses Univa HPC Cloud solutions on Amazon Web Services to build million core cluster, improving business competitive advantage ...

Univa offers new support services to Open Source Grid Engine users ...

Hardware

Analytics market leaders DDN Storage and SQream partnering to deliver accelerated business decisions ...

Panasas announces new growth investment and additions to its Board of Directors ...

Fujitsu launches industry's first 600G hyperscale optical transport solution, empowering tomorrow's high-speed networks ...

VAST Data unveils its universal storage architecture to bring an end to the enterprise HDD and storage tiering era ...

Global High Performance Computing (HPC) Market 2019-2024 by Component, Infrastructure, Services, Price Band, HPC Applications, and Deployment Type ...

Applications

Stampede2 and Maverick systems at TACC help power visualization of Arctic Ocean data ...

University at Buffalo names Abani Patra to lead Center for Computational Research ...

Supercomputing enables sound prediction model for controlling noise ...

The Cloud

Mellanox propels JD Cloud to new levels of performance and efficiency ...

National Science Foundation funds second round for OSC's Open OnDemand ...