Cryogenic spectroscopy of ultra-low density colloidal lead chalcogenide quantum dots on chip-scale optical cavities towards single quantum dot near-infrared cavity QED

Abstract

We present evidence of cavity quantum electrodynamics from a sparse density of strongly quantum-confined Pb-chalcogenide nanocrystals (between 1 and 10) approaching single-dot levels on moderately high-Q mesoscopic silicon optical cavities. Operating at important near-infrared (1500-nm) wavelengths, large enhancements are observed from devices and strong modifications of the QD emission are achieved. Saturation spectroscopy of coupled QDs is observed at 77K, highlighting the modified nanocrystal dynamics for quantum information processing.

* new additional figures and text * 10 pages, 5 figures

References in corpus (8)

• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Coherent generation of nonclassical light on a chip via photon-induced tunneling and blockade
• High Quality factor photonic crystal nanobeam cavities
• Linear and nonlinear optical spectroscopy of a strongly-coupled microdisk-quantum dot system
• Pure emitter dephasing : a resource for advanced solid-state single photon sources
• Temperature-tuning of near-infrared monodisperse quantum dot solids at 1.5 um for controllable Forster energy transfer
• Observations of zero-order bandgaps in negative-index photonic crystal superlattices at the near-infrared
• Indistinguishability of independent single photons

Cited by in corpus (5)

• Demonstration of an air-slot mode-gap confined photonic crystal slab nanocavity with ultrasmall mode volumes
• Ultrafast supercontinuum spectroscopy of carrier multiplication and biexcitonic effects in excited states of PbS quantum dots
• Time-resolved energy transfer from single chloride terminated nanocrystals to graphene
• Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic circuit
• Fiber-based cryogenic and time-resolved spectroscopy of PbS quantum dots