• DocumentCode
    1208451
  • Title

    Decoherence in quantum systems

  • Author

    O´Connell, R.F.

  • Author_Institution
    Dept. of Phys. & Astron., Louisiana State Univ., Baton Rouge, LA, USA
  • Volume
    4
  • Issue
    1
  • fYear
    2005
  • Firstpage
    77
  • Lastpage
    82
  • Abstract
    We discuss various definitions of decoherence and how it can be measured. We compare and contrast decoherence in quantum systems with an infinite number of eigenstates (such as the free particle and the oscillator) and spin systems. In the former case, we point out the essential difference between assuming "entanglement at all times" and entanglement with the reservoir occuring at some initial time. We also discuss optimum calculational techniques in both arenas.
  • Keywords
    Wigner distribution; oscillators; quantum entanglement; spin systems; decoherence; entanglement; free particle; optimum calculational method; oscillator; quantum systems; spin systems; Cats; Computer interfaces; Extraterrestrial measurements; Oscillators; Probability distribution; Quantum computing; Quantum entanglement; Reservoirs; Teleportation; Temperature;
  • fLanguage
    English
  • Journal_Title
    Nanotechnology, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1536-125X
  • Type

    jour

  • DOI
    10.1109/TNANO.2004.840158
  • Filename
    1381398
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1208451