English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

One of the outstanding questions in modern physics is how to test whethergravity is classical or quantum in a laboratory. Recently there has been aproposal to test the quantum nature of gravity by creating quantumsuperpositions of two nearby neutral masses, close enough that the quantumnature of gravity can entangle the two quantum systems, but still sufficientlyfar away that all other known Standard Model interactions remain negligible.However, the mere process of preparing superposition states of a neutral mass(the light system), requires the vicinity of laboratory apparatus (the heavysystem). We will suppose that such a heavy system can be modelled as anotherquantum system; since gravity is universal, the lighter system can getentangled with the heavier system, providing an inherent source ofgravitational decoherence. In this paper, we will consider two light and twoheavy quantum oscillators, forming pairs of probe-detector systems, and studyunder what conditions the entanglement between two light systems evades thedecoherence induced by the heavy systems. We conclude by estimating themagnitude of the decoherence in the proposed experiment for testing the quantumnature of gravity.

Gravitational decoherence by the apparatus in the quantum-gravity induced entanglement of masses