Metamorphosis of InP self-organized islands and the two-dimensional distribution modified by mismatched GaInP buffer layers

Wang, Hao; Liao, Changjun; Fan, Guanghan; Liu, Songhao; Zeng, Gucheng; Wu, Yangzhe; Liao, Wentao; Cai, Jun; Song, Zhijun; Le, Xueyi

doi:10.1016/j.susc.2004.05.078

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…The collection efficiency may probably increase by modifying the shape of the quantum dot to improve emitting directionality of the photon. A modified shape of the self-organized island has experimentally demonstrated [31][32][33] However, the field distribution emitted by quantum dot with the shape of the quantum dot should be studied in more detail to show the evolution of the emitted field which may be weakly controlled by the geometrical shape as the size decreased further. According to Eq.1, if the divergence angle were controlled to be less than π, the minimum uncertainty wave packet is about 100 nm at the communication wavelengths.…”

Section: General Considerationmentioning

confidence: 99%

Photonic technology in quantum information challenges quantum limitation

2007

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Basic experiments for quantum information have demonstrated the important role that photons play in future practical quantum information system. Technical prospects of processing quantum information in quantum computing, quantum communication and quantum cryptography encourage researchers to develop advanced photonic devices with high precision. We recognized that the most essential is to develop component parts of every kind that can constitute a qualified quantum information system. By using these component parts with high precision, it is possible to decrease errors in a practical quantum information system. The errors come from interaction of quantum information with environment that appear as decoherence. In terms of the technical terminology, this kind of interaction is appeared in conventional characterization as loss of the devices that are responsible for the permutation between quantum information system and environment noise. Therefore we analyze several possible structures of the components and devices that should be considered in the design of the components and the devices for quantum information usage. The emitters should generate quantum eigen state that the quantum dot with specified shape is embedded in mode matched waveguide. The quantum bits should be encoded only by phase modulation without loss. The receiver should also be sensitive to the quantum state. Every step of the efforts challenges the quantum limitation and the technologies available.

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Section: General Considerationmentioning

confidence: 99%

Photonic technology in quantum information challenges quantum limitation

2007

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Surface morphology of GaInP buffer layers and its impact on the lateral distribution of self-organized InP islands

Wang

Zeng

Song

et al. 2005

Journal of Crystal Growth

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Achievement of alternative amorphous AlAs/crystalline AlGaAs multilayers

Wang

Liao

Zheng

et al. 2006

Applied Physics Letters

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A hybrid multilayer, composed of ten period amorphous AlAs/crystalline GaAlAs stacks, is realized by metalorganic chemical vapor deposition method on a GaAs substrate. Cross-sectional transmission electron microscopy shows the presence of sharp amorphous/crystalline interfaces. The electron diffraction patterns reveal the coexistence of both amorphous and crystalline phases and the perfect coherence of atom arrows between substrate and crystalline AlGaAs layers was also demonstrated. Perfect crystalline AlGaAs quality was further confirmed by x-ray rocking curves. The potential application of such hybrid multilayers is discussed and its behavior as a Bragg reflector is explored with a stop band gap of 75% reflectance.

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Metamorphosis of InP self-organized islands and the two-dimensional distribution modified by mismatched GaInP buffer layers

Cited by 3 publications

References 29 publications

Photonic technology in quantum information challenges quantum limitation

Photonic technology in quantum information challenges quantum limitation

Surface morphology of GaInP buffer layers and its impact on the lateral distribution of self-organized InP islands

Achievement of alternative amorphous AlAs/crystalline AlGaAs multilayers

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