苏州大学学报(自然科学版)
囌州大學學報(自然科學版)
소주대학학보(자연과학판)
JOURNAL OF SUZHOU UNIVERSITY NATURAL SCIENCE
2009年
1期
61-65
,共5页
量子纠缠%隐形传送%海森堡链
量子糾纏%隱形傳送%海森堡鏈
양자규전%은형전송%해삼보련
entanglement%teleportation%Heisenberg chain
研究了以一维海森堡XXX链作为量子通道,实现了两粒子纯态的量子隐形传送.为了表明传输效果,给出了传输过程中的平均保真度.发现当外加磁场较低,并且温度T小于(2J)/(kln5)时,平均保真度大于经典通道的传输极限值2/3.
研究瞭以一維海森堡XXX鏈作為量子通道,實現瞭兩粒子純態的量子隱形傳送.為瞭錶明傳輸效果,給齣瞭傳輸過程中的平均保真度.髮現噹外加磁場較低,併且溫度T小于(2J)/(kln5)時,平均保真度大于經典通道的傳輸極限值2/3.
연구료이일유해삼보XXX련작위양자통도,실현료량입자순태적양자은형전송.위료표명전수효과,급출료전수과정중적평균보진도.발현당외가자장교저,병차온도T소우(2J)/(kln5)시,평균보진도대우경전통도적전수겁한치2/3.
The teleportation of a two-qubit pure state through 1D Heisenberg XXX chain as a quantum channel is investigated.To quantify the degree of the teleportation,we give the average fidelity of the transmission.When the temperature T is lower than the value of (2J)/(kln5) with lower external magnetic field B,we get the fidelity larger than 2/3 which is the limited value of any classical communication.
