2021/06/20 by J. Redondo-Yuste, Jaime Redondo–Yuste, M. Blanco de Paz +5
Computer Science · Physics and Astronomy · #Anisotropy #Cavity quantum electrodynamics #Condensed matter physics #Dirac (video compression format) #Dirac equation #Dissipation #Electromagnetic field #Field (mathematics) #Isotropy #Open quantum system #Photon #Photonic crystal #Photonics #Physics #Quantum #Quantum Information and Cryptography #Quantum electrodynamics #Quantum mechanics #Quantum optics and atomic interactions #Topological Materials and Phenomena #quant-ph
paper · pdf · doi:10.1088/1367-2630/ac27e0
16 pages, 10 figures
arxiv created 2021/06/20 · openalex publication_date 2021/09/17 · openalex created_date 2021/09/27 · arxiv updated 2021/11/17 · openalex updated_date 2026/08/05
One of the most striking predictions of quantum electrodynamics is that vacuum fluctuations of the electromagnetic field can lead to spontaneous emission of atoms as well as photon-mediated interactions among them. Since these processes strongly depend on the nature of the photonic bath, a current burgeoning field is the study of their modification in the presence of photons with non-trivial energy dispersions, e.g. the ones confined in photonic crystals. A remarkable example is the case of isotropic Dirac-photons, which has been recently shown to lead to non-exponential spontaneous emission as well as dissipation-less long-range emitter interactions. In this work, we show how to further tune these processes by considering anisotropic Dirac cone dispersions, which include tilted, semi-Dirac, and the recently discovered type II and III Dirac points. In particular, we show how by changing the anisotropy of the lattice one can change both the spatial shape of the interactions as well as its coherent/incoherent nature. Finally, we theoretically analyze a possible implementation based on subwavelength atomic arrays where these energy dispersions can be engineered and interfaced with quantum emitters.