Collective Effects in Casimir-Polder Forces

Kanupriya Sinha, B. Prasanna Venkatesh, Pierre Meystre

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

We study cooperative phenomena in the fluctuation-induced forces between a surface and a system of neutral two-level quantum emitters prepared in a coherent collective state, showing that the total Casimir-Polder force on the emitters can be modified via their mutual correlations. Particularly, we find that a one-dimensional chain of emitters prepared in a super- or subradiant state experiences an enhanced or suppressed collective vacuum-induced force, respectively. The collective nature of dispersion forces can be understood as resulting from the interference between the different processes contributing to the surface-modified resonant dipole-dipole interaction. Such cooperative fluctuation forces depend singularly on the surface response at the resonance frequency of the emitters, thus being easily maneuverable. Our results demonstrate the potential of collective phenomena as a new tool to selectively tailor vacuum forces.

Original languageEnglish (US)
Article number183605
JournalPhysical review letters
Volume121
Issue number18
DOIs
StatePublished - Nov 1 2018

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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