Transformation quantum optics: designing spontaneous emission using coordinate transformations

Jingjing Zhang, Martijn Wubs, Pavel Ginzburg, Gregory Wurtz, Anatoly V Zayats

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Spontaneous decay is a fundamental quantum property of emitters that can be controlled in a material environment via modification of the local density of optical states (LDOS). Here we use transformation optics methods in order to design required density of states and thus spontaneous emission (SE) rate. Specifically, we show that the SE rate can be either enhanced or suppressed using invisibility cloaks or gradient index lenses. Furthermore, the anisotropic material profile of the cloak enables the directional control of SE. We also discuss how the practical issues, such as dispersion and losses, affect the LDOS in complex materials. Tailoring SE properties using transformation optics approach provides an innovative way for designing emission properties in a complex material environment needed for the development of active nanophotonic devices.
Original languageEnglish
Article number044029
JournalJournal of Optics
Issue number4
Number of pages12
Publication statusPublished - 2016


  • Transformation optics
  • Spontaneous emission
  • Density of optical states
  • Invisibility cloaks

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