Are weak measurements really necessary for Leggett-Garg type measurements?

Autor:	Dass, N. D. Hari
Rok vydání:	2015
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	Leggett-Garg inequalities are an important milestone in our quest to bridge the classical-quantum divide. An experimental investigation of these inequalities requires the so called \emph{non-invasive measurements}(NIM). It has become popular to invoke weak measurements as the means of realising NIMs to very good approximation, because of their allegedly low disturbance of systems under measurement. In this note, this is shown to be a myth; it is shown, by simple estimates of errors, that for comparable levels of statistical errors, even the strong or projective measurements can be used. In fact, it is shown that resource-wise, strong measurements are even preferable. Comment: 5 pages in Revtex
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1509.05136 Zobrazit plný text záznamu View this record from Arxiv