均匀磁场对海森堡XX链中两体热纠缠的影响
균균자장대해삼보XX련중량체열규전적영향
An Uniform Magnetic Effects on the Pairwise Thermal Entanglement in N-qubit Heisenberg XX Chain
  • 万方数据
    量子光学学报 양자광학학보
    ACTA SINICA QUANTUM OPTICA
    2008年 1期 1-6 ,共6页

    郭克涛%符力平

    곽극도%부력평

    热纠缠%海森堡链%均匀磁场 熱糾纏%海森堡鏈%均勻磁場
    열규전%해삼보련%균균자장
    thermal entanglement%Heisenberg chain%uniform magnetic field
    通过计算比特数n不大于6海森堡XX链中的两体纠缠,发现只有当n为奇数时,最近邻纠缠在磁场为零时才出现下凹现象.当n为4或6时,非最近邻纠缠在磁场两边对称;当n为5时,非最近邻纠缠在磁场两边则不对称.
    통과계산비특수n불대우6해삼보XX련중적량체규전,발현지유당n위기수시,최근린규전재자장위령시재출현하요현상.당n위4혹6시,비최근린규전재자장량변대칭;당n위5시,비최근린규전재자장량변칙불대칭.
    Basing on the calculation of all the pairwise entanglement in the n. qubit(n≤6)Heisenberg XX chain with an uniform magnetic field, we find that the nearest-neighbour entanglement drops to a dip at the point of B=0as long as the number is odd. The non-nearest pairwise entanglement appears symmetrically at two sides of B when nequals 4(or 6), while it doesn't appear symmetrically when n equals 5.
    원문보기 원문다운로드 사이트로이동
저자의 최근 논문