科研之友
微信
新浪微博
Facebook
分享链接
摘要
We investigate the conditional average and the conditional variance of dissipated energy considering, as a prototypical example, a driven spin-boson system. We follow a measurement protocol in which the spin is prepared in a certain initial state before undergoing a periodic driving. Subsequently, the spin is projected onto a postselected final state. We compare the conditional average of dissipated energy to the lower bound, which directly follows from the well-known fluctuation relations. We further report that a special selection of the initial (preselected) and final (postselected) spin states leads to an enhanced energy emission with simultaneous noise suppression at driving times of order of the relaxation time.
- 出版日期2017-8-7
