江西师范大学学报(自然科学版)
江西師範大學學報(自然科學版)
강서사범대학학보(자연과학판)
JOURNAL OF JIANGXI NORMAL UNIVERSITY(NATURAL SCIENCES EDITION)
2015年
4期
393-398
,共6页
量子失协%非马尔科夫信道%准模理论
量子失協%非馬爾科伕信道%準模理論
양자실협%비마이과부신도%준모이론
quantum discord%non-markov channel%quasi mode theory
讨论了外加经典驱动场对非马尔科夫信道量子失协动力学演化的影响。研究结果表明:尽管调控经典场的幅度、频率均能够对非马尔科夫信道量子失协起保护作用,但保护的效果有较大差别;能对系统量子失协保持起关键作用的是量子比特的有效频率与热库中心频率间的总失谐,调控经典驱动场的幅度是增大总失谐的最有效的途径。提升经典驱动场的幅度是实现量子失协保持最有效的方法。
討論瞭外加經典驅動場對非馬爾科伕信道量子失協動力學縯化的影響。研究結果錶明:儘管調控經典場的幅度、頻率均能夠對非馬爾科伕信道量子失協起保護作用,但保護的效果有較大差彆;能對繫統量子失協保持起關鍵作用的是量子比特的有效頻率與熱庫中心頻率間的總失諧,調控經典驅動場的幅度是增大總失諧的最有效的途徑。提升經典驅動場的幅度是實現量子失協保持最有效的方法。
토론료외가경전구동장대비마이과부신도양자실협동역학연화적영향。연구결과표명:진관조공경전장적폭도、빈솔균능구대비마이과부신도양자실협기보호작용,단보호적효과유교대차별;능대계통양자실협보지기관건작용적시양자비특적유효빈솔여열고중심빈솔간적총실해,조공경전구동장적폭도시증대총실해적최유효적도경。제승경전구동장적폭도시실현양자실협보지최유효적방법。
The effect of external classical field on the quantum discord in non-markov channel has been discussed. In spite of manipulating the amplitude and frequency of the external field help to protect the quantum discord in non-markov channel,the efficiency is quite different. The total detuning between the efficient frequency of qubit and the central frequency of thermal bath plays a vital role in maintaining the quantum discord,and the most efficient way to enhance the total detuning is to manipulate the amplitude of the classical field. Therefore,increasing the am-plitude of classical field is the most efficient method for quantum discord maintaining.