Cavity-enhanced single photon emission from site-controlled In(Ga)As quantum dots fabricated using nanoimprint lithography

Abstract

Articles you may be interested inImpact of the non-planar morphology of pre-patterned substrates on the structural and electronic properties of embedded site-controlled InAs quantum dots Structural and optical properties of InAs quantum dot chains grown on nanoimprint lithography structured GaAs with different pattern orientations Appl. Phys. Lett. 97, 173107 (2010); 10.1063/1.3506903 Molecular-beam epitaxy growth of site-controlled InAs/GaAs quantum dots defined by soft photocurable nanoimprint lithography High optical quality InAs site-controlled quantum dots grown on soft photocurable nanoimprint lithography patterned GaAs substrates Appl. Phys. Lett. 95, 173108 (2009); 10.1063/1.3255015Fabrication of InAs quantum dots in Al As ∕ Ga As DBR pillar microcavities for single photon sources

Ultrafast coherent manipulation of trions in site-controlled nanowire quantum dots

“…Nanowire-based qubits do not admit a direct mechanism for coupling neighboring (nor distant) qubits, but by adapting schemes developed for scalable trapped-ion quantum processors [43], in which distant qubits are entangled optically, one can imagine an architecture for a quantum processor based on nanowire-QD qubits. Although the replication of longcoherence-time qubit experiments in a site-controlled quantum dot platform is a major challenge in the QD roadmap for building a quantum repeater [44], technological advancements in several promising site-controlled QD platforms [21][22][23][24][25][26][27] make this prospect appear within our grasp.…”

“…Site-controlled quantum dots have recently emerged as a promising technology in addressing the issue of qubit positioning. Among the existing site-controlled quantum dot technologies [21][22][23][24][25][26][27], InAsP quantum dots embedded in deterministically-positioned InP nanowires [28] stand out for their high efficiency [29] single- [30] and entangled-photon [31,32] generation properties. This new quantum dot system gives us an opportunity to revisit the physics of excitonic qubit coherent control in a novel, scalable platform.…”

The Role of Groove Periodicity in the Formation of Site-Controlled Quantum Dot Chains

“…In recent years, site-controlled QD epitaxy was focused on creating periodic arrays of single QDs used, e.g., as single photon sources embedded in microcavities [ 15 , 16 ]. Moreover, another interesting topic emerged related to ordering of QDs in various kinds of arrays, such as in chains of QDs.…”

Dense arrays of site-controlled quantum dots with tailored emission wavelength: Growth mechanisms and optical properties

“…6 Whereas most preliminary tests of these concepts have been implemented using self-assembled QDs, 5 which do not provide spatial, spectral or polarization control over the emitted photons, this integration would greatly benefit from the development of a scalable QD fabrication platform. [7][8][9] In particular, the sites of all the QDs should be simultaneously controlled for spatial matching with the modes of the photonic structures, [10][11][12][13][14][15] be flexible in polarization to match the state of the photonic mode, 16,17 and exhibit reproducible and deterministic emission wavelengths. 18,19 Wavelength control is especially important for tuning the QD emission energy with respect to the photonic mode of interest, in order to achieve significant Purcell or strong coupling effects.…”