- About Us
- Career Center
- Nano-Social Network
- Nano Consulting
- My Account
Fundamental limitation to quantum computersJuly 07, 2005
A quantum computer can only function if the information exists for long enough to be processed. The so-called coherence of the qubit ensures that the quantum information remains intact. The researchers have now discovered that the coherence spontaneously disappears over the course of time and with this the stored information as well. This could pose a considerable problem for the development of a quantum computer.
A quantum computer makes use of the fact that a quantum mechanical system -an electron, an atom or even a larger system such as a superconducting quantum bit - can simultaneously exist in two states. Normally one of the two states disappears as soon as the system comes into contact with the outside world. The coherence then disappears as a result of the decoherence process and the information in a quantum bit is lost.
The article "An Intrinsic Limit to Quantum Coherence due to Spontaneous Symmetry Breaking" was published in Physical Review Letters, in the week ending 17 June 2005.
Dr Jeroen van den Brink
+31 (0)71 527 5510
Copyright © Netherlands Organisation for Scientific Research
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.
Pseudospin-driven spin relaxation mechanism in graphene November 11th, 2014
Heat Transfer Sets the Noise Floor for Ultrasensitive Electronics November 11th, 2014
Noise in a microwave amplifier is limited by quantum particles of heat November 10th, 2014
Sussex physicists find simple solution for quantum technology challenge October 28th, 2014
Leica Microsystems Presents Universal Hybrid Detector for Single Molecule Detection and Imaging at SfN and ASCB: Leica HyD SMD - the Optimal Detector for Precise and Reliable SMD data November 20th, 2014
Silver Nanoparticles Produced in Iran from Forest Plants Extract November 20th, 2014
Nano Sorbents Able to Remove Pollutions Caused by Oil Derivatives November 20th, 2014