We have studied quantum statistical properties of the exciton in a leaky quasi-mode cavity. It is shown that when the exciton is initially in a squeezed coherent state whereas cavity initially in a vacuum state, there...We have studied quantum statistical properties of the exciton in a leaky quasi-mode cavity. It is shown that when the exciton is initially in a squeezed coherent state whereas cavity initially in a vacuum state, there is energy exchange between the exciton and cavity. Both the exciton and cavity may exhibit sub-Poissonian distribution and exist quadrature squeezing. Calculation shows that correlation between the exciton and cavity is classical, which implies that there is not the violation of the Cauchy-Schwartz inequality.展开更多
This article is a corpus-based study of colloquial features, especially quasi-modals in English learners’writings. Via using Longman Learners Corpus, British English 2006 and American English 2006, quasi-modals used ...This article is a corpus-based study of colloquial features, especially quasi-modals in English learners’writings. Via using Longman Learners Corpus, British English 2006 and American English 2006, quasi-modals used in English language learners’ writings are compared with the real uses of quasi-modals in native speakers’ writings. The results show that English languagelearners may have a problem with misusing colloquial-feature phrases, quasi-modals, in written registers.展开更多
文摘We have studied quantum statistical properties of the exciton in a leaky quasi-mode cavity. It is shown that when the exciton is initially in a squeezed coherent state whereas cavity initially in a vacuum state, there is energy exchange between the exciton and cavity. Both the exciton and cavity may exhibit sub-Poissonian distribution and exist quadrature squeezing. Calculation shows that correlation between the exciton and cavity is classical, which implies that there is not the violation of the Cauchy-Schwartz inequality.
文摘This article is a corpus-based study of colloquial features, especially quasi-modals in English learners’writings. Via using Longman Learners Corpus, British English 2006 and American English 2006, quasi-modals used in English language learners’ writings are compared with the real uses of quasi-modals in native speakers’ writings. The results show that English languagelearners may have a problem with misusing colloquial-feature phrases, quasi-modals, in written registers.
