Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Researchers managed to prevent the disappearing of quantum information

Quantum mechanics describes the behaviour of minute physical systems, such as photons. Photons are also used as the quantum-mechanical equivalents to classic bits, qubits. Quantum-mechanical properties, such as superpositions and quantum entanglement, can be utilised in technology, effective calculation, and encrypting messages.
Quantum mechanics describes the behaviour of minute physical systems, such as photons. Photons are also used as the quantum-mechanical equivalents to classic bits, qubits. Quantum-mechanical properties, such as superpositions and quantum entanglement, can be utilised in technology, effective calculation, and encrypting messages.

Abstract:
The properties of quantum mechanics can be utilised, for example, in technology and encrypting messages, but the disadvantage is the occasional disappearing of information. For the first time, a research group consisting of Finnish and Chinese scientists has found a way to fully control the information escaping the qubit.

Researchers managed to prevent the disappearing of quantum information

Turku, Finland | Posted on September 14th, 2018

Quantum mechanics describes the behaviour of minute physical systems, such as photons. Photons are also used as the quantum-mechanical equivalents to classic bits, qubits. Quantum-mechanical properties, such as superpositions and quantum entanglement, can be utilised in technology, effective calculation, and encrypting messages.

- These properties are very fragile and usually disappear rapidly as a result of so-called decoherence and quantum noise. As a result, the information carried by the qubit leaks into the environment and disappears completely. Both in terms of basic research and technological applications, it is vital to understand how quantum information disappears, and to find ways to control the behaviour of quantum systems and prevent the disappearing of information, says University Research Fellow Jyrki Piilo from the Department of Physics and Astronomy of the University of Turku.

For the first time, the research groups of Turku Centre for Quantum Physics at the University of Turku and the University of Science and Technology of China have showed both in theory and experimentally how the information flowing from the qubit into the environment can be controlled. The groups also proved that the disappearing of quantum information can even be prevented in some cases.

- Our work is based on exploring the properties of photons and their careful control in the laboratory. In order to achieve the result, it was crucial to first theoretically understand how to create an adequate connection between the polarisation and frequency of the photon in the beginning, and then implement it in the laboratory using extremely refined and challenging experimental techniques. When the photon serving as the qubit - and its environment - has first been initialised into the right state, it is then possible to arbitrarily control how the information carried by the qubit disappears or is retrieved, and it can even be trapped or protected from disturbances, explains Professor Chuan-Feng Li from the University of Science and Technology of China.

According to Li, the results of the study are significant for basic research and developing quantum technologies.

- Individual photons can now also be used for simulating the behaviour of several other quantum-mechanical systems, including magnetic spin systems. Also, the results provide fundamental information on the behaviour of open quantum systems in different environments. Moreover, the results enable the manufacturing of artificial environments for qubits. These environments are not found elsewhere naturally, but they can be produced in the laboratory, says Piilo.

The researchers from Turku Centre for Quantum Physics at the University of Turku were responsible for the theoretical part of the study, and Professor of Theoretical Physics Sabrina Maniscalco and Doctoral Candidate Henri Lyyra participated in the study alongside Piilo. Professors Chuan-Feng Li and Guang-Can Guo from the University of Science and Technology of China were responsible for the experimental implementation of the study together with their research groups including co-first author Zhao-Di Liu.

####

For more information, please click here

Contacts:
Jyrki Piilo

Copyright © University of Turku

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

RELATED JOURNAL ARTICLE

Related News Press

News and information

Researchers develop artificial building blocks of life March 8th, 2024

How surface roughness influences the adhesion of soft materials: Research team discovers universal mechanism that leads to adhesion hysteresis in soft materials March 8th, 2024

Two-dimensional bimetallic selenium-containing metal-organic frameworks and their calcinated derivatives as electrocatalysts for overall water splitting March 8th, 2024

Curcumin nanoemulsion is tested for treatment of intestinal inflammation: A formulation developed by Brazilian researchers proved effective in tests involving mice March 8th, 2024

Govt.-Legislation/Regulation/Funding/Policy

What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024

Researchers’ approach may protect quantum computers from attacks March 8th, 2024

The Access to Advanced Health Institute receives up to $12.7 million to develop novel nanoalum adjuvant formulation for better protection against tuberculosis and pandemic influenza March 8th, 2024

Optically trapped quantum droplets of light can bind together to form macroscopic complexes March 8th, 2024

Possible Futures

Two-dimensional bimetallic selenium-containing metal-organic frameworks and their calcinated derivatives as electrocatalysts for overall water splitting March 8th, 2024

Curcumin nanoemulsion is tested for treatment of intestinal inflammation: A formulation developed by Brazilian researchers proved effective in tests involving mice March 8th, 2024

The Access to Advanced Health Institute receives up to $12.7 million to develop novel nanoalum adjuvant formulation for better protection against tuberculosis and pandemic influenza March 8th, 2024

Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024

Chip Technology

New chip opens door to AI computing at light speed February 16th, 2024

HKUST researchers develop new integration technique for efficient coupling of III-V and silicon February 16th, 2024

Electrons screen against conductivity-killer in organic semiconductors: The discovery is the first step towards creating effective organic semiconductors, which use significantly less water and energy, and produce far less waste than their inorganic counterparts February 16th, 2024

NRL discovers two-dimensional waveguides February 16th, 2024

Quantum Computing

Researchers’ approach may protect quantum computers from attacks March 8th, 2024

Physicists ‘entangle’ individual molecules for the first time, hastening possibilities for quantum information processing: In work that could lead to more robust quantum computing, Princeton researchers have succeeded in forcing molecules into quantum entanglement December 8th, 2023

World’s first logical quantum processor: Key step toward reliable quantum computing December 8th, 2023

Optical-fiber based single-photon light source at room temperature for next-generation quantum processing: Ytterbium-doped optical fibers are expected to pave the way for cost-effective quantum technologies November 3rd, 2023

Discoveries

What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024

Researchers’ approach may protect quantum computers from attacks March 8th, 2024

High-tech 'paint' could spare patients repeated surgeries March 8th, 2024

Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024

Announcements

What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024

Curcumin nanoemulsion is tested for treatment of intestinal inflammation: A formulation developed by Brazilian researchers proved effective in tests involving mice March 8th, 2024

The Access to Advanced Health Institute receives up to $12.7 million to develop novel nanoalum adjuvant formulation for better protection against tuberculosis and pandemic influenza March 8th, 2024

Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024

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

Researchers develop artificial building blocks of life March 8th, 2024

How surface roughness influences the adhesion of soft materials: Research team discovers universal mechanism that leads to adhesion hysteresis in soft materials March 8th, 2024

Curcumin nanoemulsion is tested for treatment of intestinal inflammation: A formulation developed by Brazilian researchers proved effective in tests involving mice March 8th, 2024

Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024

Research partnerships

Researchers’ approach may protect quantum computers from attacks March 8th, 2024

How surface roughness influences the adhesion of soft materials: Research team discovers universal mechanism that leads to adhesion hysteresis in soft materials March 8th, 2024

'Sudden death' of quantum fluctuations defies current theories of superconductivity: Study challenges the conventional wisdom of superconducting quantum transitions January 12th, 2024

Development of zinc oxide nanopagoda array photoelectrode: photoelectrochemical water-splitting hydrogen production January 12th, 2024

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