Reversible switching of ultrastrong light-molecule coupling

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We demonstrate that photochromic molecules enable switching from the weak- to ultrastrong-coupling regime reversibly, by using all-optical control. This switch is achieved by photochemically inducing conformational changes in the molecule. Remarkably, a Rabi splitting of 700 meV is measured at room temperature, corresponding to 32% of the molecular transition energy. A similar coupling strength is demonstrated in a plasmonic structure. Such systems present a unique combination of coupling strength and functional capacities.
Original languageEnglish
JournalPhysical Review - Index
Volume106
Pages (from-to)196405
Number of pages4
ISSN0094-0003
DOIs
Publication statusPublished - 13 May 2011

ID: 33814946