0 v 1 [ qu an tph ] 2 0 O ct 2 01 7 Decoherence of Macroscopic Objects from Relativistic Effect

Content Provider	Semantic Scholar
Author	Dong, G. H. Ma, Yong Hu Chen, Ji Fa Wang, Xiong-Hui
Copyright Year	2017
Abstract	Quantum superposition lies in the heart of both quantum mechanics [1, 2] and the current quantum technologies such as quantum communication and computation [3, 4]. Any superposition of different states whose evolution is governed by Schrödinger's equation [5] still satisfies the same evolution equation and remains valid in quantum world. Upon one measurement, Born's rule determines the probability of one definite outcome [6]. Another feature of interest in quantum mechanics is the quantum coherence, which is depicted by superposition. For instance, the fringes in the interference experiment of electrons show the coherence of electron state in different paths. However, interaction between a physical system with its environment may ruin this coherence. This environment-induced process, known as decoherence or dissipation [7], destroys the coherence of the system, i.e., suppresses strongly the interference of states of the system or dissipates its energy, and singles out a set of states which behave like classical states [8, 9]. In the quantum theory of measurement where the system, apparatus and environment are all treated as quantum objects (governed by Schrödinger's equation), decoherence is proposed to interpret the outcome of measurements without the collapse of wave packets [9, 10]. A number of models of environment which do not dissipate energy of the system but contribute to its decoherence have been studied in the past decades. For example, the environment can be chosen as a ring of spin 1/2 [11, 12], a reservoir of harmonic oscillators [7, 13] and many other external environments [14].
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://export.arxiv.org/pdf/1710.07440
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article