中国科学院研究生院学报
中國科學院研究生院學報
중국과학원연구생원학보
JOURNAL OF THE GRADUATE SCHOOL OF THE CHINESE ACADEMY OF SCIENCES
2009年
6期
745-748
,共4页
Leggett不等式%非定域性%量子关联
Leggett不等式%非定域性%量子關聯
Leggett불등식%비정역성%양자관련
Leggett inequality%non-locality%quantum correlations
通过比较Leggett不等式和Bell不等式,研究了Leggett不等式中非定域项的特点,给出了非定域项在不同幂次下Leggett不等式的形式.发现在非定域项不同的幂次下,推广的Leggett不等式对应着不同强弱的两体关联,即关联的大小可由幂次δ的取值来标定.并对推广的Leggett不等式和Bell不等式在量子力学下破坏大小进行了比较,分析了破坏大小和非定域项的关系.
通過比較Leggett不等式和Bell不等式,研究瞭Leggett不等式中非定域項的特點,給齣瞭非定域項在不同冪次下Leggett不等式的形式.髮現在非定域項不同的冪次下,推廣的Leggett不等式對應著不同彊弱的兩體關聯,即關聯的大小可由冪次δ的取值來標定.併對推廣的Leggett不等式和Bell不等式在量子力學下破壞大小進行瞭比較,分析瞭破壞大小和非定域項的關繫.
통과비교Leggett불등식화Bell불등식,연구료Leggett불등식중비정역항적특점,급출료비정역항재불동멱차하Leggett불등식적형식.발현재비정역항불동적멱차하,추엄적Leggett불등식대응착불동강약적량체관련,즉관련적대소가유멱차δ적취치래표정.병대추엄적Leggett불등식화Bell불등식재양자역학하파배대소진행료비교,분석료파배대소화비정역항적관계.
Through comparing the Leggett inequality with Bell inequalities, we investigate the nature of the nonlocal term in Leggett inequality and obtain various Leggett inequalities with different powers of the nonlocal term. We find that in different powers of 8 the generalized Leggett inequalities correspond to different degrees of bipartite correlation, that is, the degree of correlation can be determined by the power of δ. The violation degrees of the generalized Leggett inequality and the Bell inequality are compared under the circumstance of quantum mechanics. The relations between violation of inequalities and nonlocal term are analyzed.
