Any particular classical system and its quantum version are normally viewed as separate formulations that are strictly distinct. Our goal is to overcome the two separate languages and create a smooth and common proced...Any particular classical system and its quantum version are normally viewed as separate formulations that are strictly distinct. Our goal is to overcome the two separate languages and create a smooth and common procedure that provides a clear and continuous passage between the conventional distinction of either a strictly classical or a strictly quantized state. While path integration, among other procedures, provides an alternative route to connect classical and quantum expressions, it normally involves complicated, model-dependent, integrations. Our alternative procedures involve only model-independent procedures, and use more natural and straightforward integrations that are universal in kind. To introduce the basic procedures our presentation begins with familiar methods that are limited to basic, conventional, canonical quantum mechanical examples. In the final sections we illustrate how alternative quantization procedures, e.g., spin and affine quantizations, can also have smooth paths between classical and quantum stories, and with a few brief remarks, can also lead to similar stories for non-renormalizable covariant scalar fields as well as quantum gravity.展开更多
We use linear entropy of an exact quantum state to study the entanglement between internal electronic states and external motional states for a two-level atom held in an amplitude-modulated and tilted optical lattice....We use linear entropy of an exact quantum state to study the entanglement between internal electronic states and external motional states for a two-level atom held in an amplitude-modulated and tilted optical lattice. Starting from an unentangled initial state associated with the regular ＇island＇ of classical phase space, it is demonstrated that the quantum resonance leads to entanglement generation, the chaotic parameter region results in the increase of the generation speed, and the symmetries of the initial probability distribution determine the final degree of entanglement. The entangled initial states are associated with the classical ＇chaotic sea＇, which do not affect the final entanglement degree for the same initial symmetry. The results may be useful in engineering quantum dynamics for quantum information processing.展开更多
目的阐明基于慕课(massive open online courses,MOOC)及线下教学为主的混合式教学模式在《伤寒琢》中医实习生课程中的教学效果。方法2022年7—9月,选择南京中医药大学附属医院大五中医实习生60名,运用分层随机法分成线下组及混合组,...目的阐明基于慕课(massive open online courses,MOOC)及线下教学为主的混合式教学模式在《伤寒琢》中医实习生课程中的教学效果。方法2022年7—9月,选择南京中医药大学附属医院大五中医实习生60名,运用分层随机法分成线下组及混合组,各30名,每组总课时皆为36学时。线下组为《伤寒琢》线下教学,而混合组选择《伤寒琢》线上线下联合教学。课程后两组分别进行考核,分为临床标准化病人(standardized patients,SP)考核及统一试卷考试,同时课程结束后对教师及学生分别进行反馈调查。结果混合组学生中医临床诊疗操作、医德考核、SP打分、试卷考试及总成绩皆优于线下组,差异有统计学意义(P<0.05)。此外两组教师及学生对课程的反馈评分差异无统计学意义(P>0.05)。结论慕课对《伤寒琢》课程的线下教学具有促进作用,且不同教学方法并不影响教师及学生的教、学体验。展开更多
文摘Any particular classical system and its quantum version are normally viewed as separate formulations that are strictly distinct. Our goal is to overcome the two separate languages and create a smooth and common procedure that provides a clear and continuous passage between the conventional distinction of either a strictly classical or a strictly quantized state. While path integration, among other procedures, provides an alternative route to connect classical and quantum expressions, it normally involves complicated, model-dependent, integrations. Our alternative procedures involve only model-independent procedures, and use more natural and straightforward integrations that are universal in kind. To introduce the basic procedures our presentation begins with familiar methods that are limited to basic, conventional, canonical quantum mechanical examples. In the final sections we illustrate how alternative quantization procedures, e.g., spin and affine quantizations, can also have smooth paths between classical and quantum stories, and with a few brief remarks, can also lead to similar stories for non-renormalizable covariant scalar fields as well as quantum gravity.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11175064 and 11475060the Construct Program of the National Key Discipline of Chinathe Hunan Provincial Innovation Foundation for Postgraduates under Grant No CX2014B195
文摘We use linear entropy of an exact quantum state to study the entanglement between internal electronic states and external motional states for a two-level atom held in an amplitude-modulated and tilted optical lattice. Starting from an unentangled initial state associated with the regular ＇island＇ of classical phase space, it is demonstrated that the quantum resonance leads to entanglement generation, the chaotic parameter region results in the increase of the generation speed, and the symmetries of the initial probability distribution determine the final degree of entanglement. The entangled initial states are associated with the classical ＇chaotic sea＇, which do not affect the final entanglement degree for the same initial symmetry. The results may be useful in engineering quantum dynamics for quantum information processing.
文摘目的阐明基于慕课(massive open online courses,MOOC)及线下教学为主的混合式教学模式在《伤寒琢》中医实习生课程中的教学效果。方法2022年7—9月,选择南京中医药大学附属医院大五中医实习生60名,运用分层随机法分成线下组及混合组,各30名,每组总课时皆为36学时。线下组为《伤寒琢》线下教学,而混合组选择《伤寒琢》线上线下联合教学。课程后两组分别进行考核,分为临床标准化病人(standardized patients,SP)考核及统一试卷考试,同时课程结束后对教师及学生分别进行反馈调查。结果混合组学生中医临床诊疗操作、医德考核、SP打分、试卷考试及总成绩皆优于线下组,差异有统计学意义(P<0.05)。此外两组教师及学生对课程的反馈评分差异无统计学意义(P>0.05)。结论慕课对《伤寒琢》课程的线下教学具有促进作用,且不同教学方法并不影响教师及学生的教、学体验。
