Theory and design of quantum light sources from quantum dots embedded in semiconductor-nanowire photonic crystal systems

Abstract

We introduce a new platform for realizing on-chip quantum electrodynamics using photonic crystal waveguide structures comprised of periodic nanowire arrays with embedded semiconductor quantum dots to act as quantum light sources. These nanowire-based structures, which can now be fabricated with excellent precision, are found to produce waveguide Purcell factors exceeding 100 and on-chip beta factors up to 99%. We investigate the fundamental optical properties of photonic crystal waveguides and finite-size structures using both photonic band structure calculations and rigorous Green function computations which allows us to obtain the modal properties and the local density of photon states. A comparison with slab-based photonic crystals is also made and we a highlight key advantages in the nanowire system, including the potential to minimize extrinsic scattering losses and produce high theoretical Purcell factors and beta-factors on-chip. We also demonstrate that these structures exhibit rich photonic Lamb shifts over broadband frequencies.

corrected typos and updated format to be consistent with published version

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• The Quantum Internet
• Quantum Computing
• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Quantum Many-Body Phenomena in Coupled Cavity Arrays
• Experimental realization of highly-efficient broadband coupling of single quantum dots to a photonic crystal waveguide
• Movable high Q nanoresonators realized by semiconductor nanowires on a Si photonic crystal platform

Cited by in corpus (2)

• Entanglement dynamics and Mollow nonuplets between two coupled quantum dots in a nanowire photonic crystal system
• Novel approaches to tailor and tune light-matter interactions at the nanoscale