• About Us
  • Contact Us
  • Cookie policy (EU)
  • Home
  • Privacy Policy
  • Video
  • Write for us
Today Headline
  • HOME
  • NEWS
    • POLITICS
    • News for today
    • Borisov news
  • FINANCE
    • Business
    • Insurance
  • Video
  • TECHNOLOGY
  • ENTERPRISE
  • LIFESTYLE
    • TRAVEL
    • HEALTH
    • ENTERTAINMENT
  • AUTOMOTIVE
  • SPORTS
  • Travel and Tourism
  • HOME
  • NEWS
    • POLITICS
    • News for today
    • Borisov news
  • FINANCE
    • Business
    • Insurance
  • Video
  • TECHNOLOGY
  • ENTERPRISE
  • LIFESTYLE
    • TRAVEL
    • HEALTH
    • ENTERTAINMENT
  • AUTOMOTIVE
  • SPORTS
  • Travel and Tourism
No Result
View All Result
TodayHeadline
No Result
View All Result

A new super-cooled microwave source boosts the scale-up of quantum computers

December 9, 2021
in Technology
0
A new super-cooled microwave source boosts the scale-up of quantum computers
0
SHARES
3
VIEWS
Share on FacebookShare on Twitter


A new super-cooled microwave source boosts the scale-up of quantum computers

Artistic impression of an on-chip microwave source controlling qubits. Credit: Aleksandr Kakinen

Researchers in Finland have developed a circuit that produces the high-quality microwave signals required to control quantum computers while operating at temperatures near absolute zero. This is a key step towards moving the control system closer to the quantum processor, which may make it possible to greatly increase the number of qubits in the processor.

One of the factors limiting the size of quantum computers is the mechanism used to control the qubits in quantum processors. This is normally accomplished using a series of microwave pulses, and because quantum processors operate at temperatures near absolute zero, the control pulses are normally brought into the cooled environment via broadband cables from room temperature.

As the number of qubits grows, so does the number of cables needed. This limits the potential size of a quantum processor, because the refrigerators cooling the qubits would have to become larger to accommodate more and more cables while also working harder to cool them down—ultimately a losing proposition.

A research consortium led by Aalto University and VTT Technical Research Centre of Finland has now developed a key component of the solution to this conundrum. “We have built a precise microwave source that works at the same extremely low temperature as the quantum processors, approximately -273 degrees,” says Mikko Möttönen, professor at Aalto University and VTT Technical Research Centre of Finland, who led the team.

The new microwave source is an on-chip device that can be integrated with a quantum processor. Less than a millimeter in size, it potentially removes the need for high-frequency control cables connecting different temperatures. With this low-power, low-temperature microwave source, it may be possible to use smaller cryostats while still increasing the number of qubits in a processor.

“Our device produces one hundred times more power than previous versions, which is enough to control qubits and carry out quantum logic operations,” says Möttönen. “It produces a very precise sine wave, oscillating over a billion times per second. As a result, errors in qubits from the microwave source are very infrequent, which is important when implementing precise quantum logic operations.”

However, a continuous-wave microwave source, such as the one produced by this device, cannot be used as is to control qubits. First, the microwaves must be shaped into pulses. The team is currently developing methods to quickly switch the microwave source on and off.

Even without a switching solution to create pulses, an efficient, low-noise, low-temperature microwave source could be useful in a range of quantum technologies, such as quantum sensors.

“In addition to quantum computers and sensors, the microwave source can act as a clock for other electronic devices. It can keep different devices in the same rhythm, allowing them to induce operations for several different qubits at the desired instant of time,” explains Möttönen.

The theoretical analysis and the initial design were carried out by Juha Hassel and others at VTT. Hassel, who started this work at VTT, is currently the head of engineering and development at IQM, a Finnish quantum-computing hardware company. The device was then built at VTT and operated by postdoctoral research Chengyu Yan and his colleagues at Aalto University using the OtaNano research infrastructure. Yan is currently an associate professor at Huazhong University of Science and Technology, China. The teams involved in this research are part of the Academy of Finland Centre of Excellence in Quantum Technology (QTF) and the Finnish Quantum Institute (InstituteQ).


IBM announces development of 127-qubit quantum processor


More information:
Chengyu Yan, A low-noise on-chip coherent microwave source, Nature Electronics (2021). DOI: 10.1038 / s41928-021-00680-z. www.nature.com/articles/s41928-021-00680-z

Provided by
Aalto University

Citation:
A new super-cooled microwave source boosts the scale-up of quantum computers (2021, December 9)
retrieved 9 December 2021
from https://techxplore.com/news/2021-12-super-cooled-microwave-source-boosts-scale-up.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

Tags: boostscomputersmicrowaveQuantumscaleupsourcesupercooled
Previous Post

Everyone froze when Chris, 47, began choking. Would you have known how to save his life?

Next Post

UN halts food aid in two towns after warehouses looted

Related Posts

Zero-trust architecture may hold the answer to cybersecurity insider threats
Technology

Zero-trust architecture may hold the answer to cybersecurity insider threats

MIT Lincoln Laboratory recently completed...

Read more
Engineers develop a way to use everyday WiFi to help robots see and navigate better indoors
Technology

Engineers develop a way to use everyday WiFi to help robots see and navigate better indoors

Credit: CC0 Public Domain Engineers...

Read more
Accelerating the pace of machine learning
Technology

Accelerating the pace of machine learning

Credit: CC0 Public Domain Machine...

Read more
Eavesdroppers can hack 6G frequency with DIY metasurface
Technology

Eavesdroppers can hack 6G frequency with DIY metasurface

Rice University graduate student Zhambyl...

Read more
A strategy to discern between real and virtual video conferencing backgrounds
Technology

A strategy to discern between real and virtual video conferencing backgrounds

Credit: Nowroozi et al. Video-conferencing...

Read more
Load More
Next Post
UN halts food aid in two towns after warehouses looted

UN halts food aid in two towns after warehouses looted

  • Trending
  • Comments
  • Latest
Its a Type of Genotoxicity: Virologist Explains mRNA Vaccine Conversion to DNA – The Epoch Times

Its a Type of Genotoxicity: Virologist Explains mRNA Vaccine Conversion to DNA – The Epoch Times

‘Heartbroken’ Dog Doesn’t Understand Why His Family Is Leaving Him At The Shelter

‘Heartbroken’ Dog Doesn’t Understand Why His Family Is Leaving Him At The Shelter

Sex/Life fans notice a HUGE editing fail in Adam Demos’ nude shower scene –

Sex/Life fans notice a HUGE editing fail in Adam Demos’ nude shower scene –

Horror as goat gives birth to ‘humanoid kid’ with baby-like face

Ghostly Unseen “Mirror World” Might Be Cause of Cosmic Controversy With Hubble Constant – SciTechDaily

Ghostly Unseen “Mirror World” Might Be Cause of Cosmic Controversy With Hubble Constant – SciTechDaily

A Buffalo supermarket worker dialed 911 during the massacre and was asked, Why are you whispering? Now, the dispatcher is set to be fired, an official said – CNN

A Buffalo supermarket worker dialed 911 during the massacre and was asked, Why are you whispering? Now, the dispatcher is set to be fired, an official said – CNN

Exclusive: Trevor Reed details surviving horrendous conditions in Russian psychiatric treatment facility – CNN

Exclusive: Trevor Reed details surviving horrendous conditions in Russian psychiatric treatment facility – CNN

Kourtney Kardashian, Travis Barker rent castle for Italy wedding: report – Page Six

Kourtney Kardashian, Travis Barker rent castle for Italy wedding: report – Page Six

About Us

Todayheadline the independent news and topics discovery
A home-grown and independent news and topic aggregation . displays breaking news linking to news websites all around the world.

Follow Us

Latest News

Ghostly Unseen “Mirror World” Might Be Cause of Cosmic Controversy With Hubble Constant – SciTechDaily

Ghostly Unseen “Mirror World” Might Be Cause of Cosmic Controversy With Hubble Constant – SciTechDaily

A Buffalo supermarket worker dialed 911 during the massacre and was asked, Why are you whispering? Now, the dispatcher is set to be fired, an official said – CNN

A Buffalo supermarket worker dialed 911 during the massacre and was asked, Why are you whispering? Now, the dispatcher is set to be fired, an official said – CNN

Ghostly Unseen “Mirror World” Might Be Cause of Cosmic Controversy With Hubble Constant – SciTechDaily

Ghostly Unseen “Mirror World” Might Be Cause of Cosmic Controversy With Hubble Constant – SciTechDaily

A Buffalo supermarket worker dialed 911 during the massacre and was asked, Why are you whispering? Now, the dispatcher is set to be fired, an official said – CNN

A Buffalo supermarket worker dialed 911 during the massacre and was asked, Why are you whispering? Now, the dispatcher is set to be fired, an official said – CNN

Exclusive: Trevor Reed details surviving horrendous conditions in Russian psychiatric treatment facility – CNN

Exclusive: Trevor Reed details surviving horrendous conditions in Russian psychiatric treatment facility – CNN

  • Real Estate
  • Education
  • Parenting
  • Cooking
  • Travel and Tourism
  • Home & Garden
  • Pets
  • Privacy & Policy
  • Contact
  • About

© 2021 All rights are reserved Todayheadline

No Result
View All Result
  • Real Estate
  • Education
  • Parenting
  • Cooking
  • Travel and Tourism
  • Home & Garden
  • Pets
  • Privacy & Policy
  • Contact
  • About

© 2021 All rights are reserved Todayheadline

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In

Add New Playlist

Posting....