Abstract
AbstractA single photon can be coupled to collective charge oscillations at the interfaces between metals and dielectrics forming a single surface plasmon. The electromagnetic near-fields induced by single surface plasmons offer new degrees of freedom to perform an exquisite control of complex quantum dynamics. Remarkably, the control of quantum systems represents one of the most significant challenges in the field of quantum photonics. Recently, there has been an enormous interest in using plasmonic systems to control multiphoton dynamics in complex photonic circuits. In this review, we discuss recent advances that unveil novel routes to control multiparticle quantum systems composed of multiple photons and plasmons. We describe important properties that characterize optical multiparticle systems such as their statistical quantum fluctuations and correlations. In this regard, we discuss the role that photon-plasmon interactions play in the manipulation of these fundamental properties for multiparticle systems. We also review recent works that show novel platforms to manipulate many-body light-matter interactions. In this spirit, the foundations that will allow nonexperts to understand new perspectives in multiparticle quantum plasmonics are described. First, we discuss the quantum statistical fluctuations of the electromagnetic field as well as the fundamentals of plasmonics and its quantum properties. This discussion is followed by a brief treatment of the dynamics that characterize complex multiparticle interactions. We apply these ideas to describe quantum interactions in photonic-plasmonic multiparticle quantum systems. We summarize the state-of-the-art in quantum devices that rely on plasmonic interactions. The review is concluded with our perspective on the future applications and challenges in this burgeoning field.
Highlights
Plasmonics studies the science and applications of surface plasmon polaritons (SPPs), which are coupled excitations comprising a charge density wave at the surface of a metal and an electromagnetic field
A single photon can be coupled to collective charge oscillations at the interfaces between metals and dielectrics forming a single surface plasmon
The electromagnetic near-fields induced by single surface plasmons offer new degrees of freedom to perform an exquisite control of complex quantum dynamics
Summary
Plasmonics studies the science and applications of surface plasmon polaritons (SPPs), which are coupled excitations comprising a charge density wave at the surface of a metal and an electromagnetic field. Surface plasmons (as we will refer collectively to as both SPPs and LSPs) behave similar to bosons, and their classical properties can be described by Maxwell’s equations with the appropriate boundary conditions Their intriguing quantum properties are revealed, for instance, when the coupled excitation occurs at the single-photon level [20] or in metallic nanostructures whose dimensions lead to quantum behavior of the charge density through quantum size effects [21,22,23]. The lossy nature of surface plasmons offers additional mechanisms for controlling dissipative dynamics behind decoherence These possibilities have opened up new research directions in which the quantum properties of plasmons are used to manipulate many-body systems of photons in applications ranging from quantum sensing to quantum networks [1, 2, 12, 27, 33,34,35,36,37,38,39,40,41]. We conclude our review by providing the reader with the most representative challenges in the field of multiparticle quantum plasmonics
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