A Nanoscale Coherent Light Source

Abstract

Generically, a laser is composed of an optical resonator coupled to a gain medium. If the light amplification via stimulated emission dominates the mirror losses, the emitted light is coherent. Recent studies have shown that sub-wavelength sized rings of quantum emitters possess subradiant eigenmodes which mimic high-Q optical resonators. We add a continuously pumped atom as a gain medium in the ring's center creating a minimalistic coherent light source. The system behaves like a thresholdless laser, featuring a narrow linewidth well below the natural linewidth of the constituent atoms.

7 pages, 7 figures

References in corpus (3)

• An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
• Single artificial-atom lasing
• Subradiance-protected excitation spreading in the generation of collimated photon emission from an atomic array

Cited by in corpus (20)

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• Efficient frequency-selective single-photon antennas based on a bio-inspired nano-scale atomic ring design with 9-fold symmetry
• Nanoscale continuous quantum light sources based on driven dipole emitter arrays
• Harnessing quantum emitter rings for efficient energy transport and trapping
• Cooperative subwavelength molecular quantum emitter arrays
• Subradiance in dilute atomic ensembles: Role of pairs and multiple scattering
• Light-harvesting enhanced by quantum ratchet states
• Optical Properties of Concentric Nanorings of Quantum Emitters
• Coherent control in atomic chains: to trap and release a traveling excitation
• Symmetry based efficient simulation of dissipative quantum many-body dynamics in subwavelength quantum emitter arrays
• Nanoscale Mirrorless Superradiant Lasing
• Nonradiant multiphoton states in quantum ring oligomers
• Selective Preparation of Collective States in Coupled Quantum Emitters Using the SUPER Excitation Scheme
• Efficient excitation transfer in an LH2-inspired nanoscale stacked ring geometry
• Subradiance generation in a chain of two-level atoms with a single excitation
• Temporal dynamics in the Bragg reflection of light by cold atoms: flash effect and superradiant decay