Now showing items 15253-15272 of 20792

    • Quantum dissipation and broadening mechanisms due to electron-phonon interactions in self-formed InGaN quantum dots 

      Xu, S. J.; Li, G. Q.; Wang, Y. J.; Zhao, Yang; Chen, Guan Hua; Zhao, D. G.; Zhu, J. J.; Yang, H.; Yu, D. P.; Wang, J. N. (2006)
      Quantum dissipation and broadening mechanisms in Si-doped InGaN quantum dots are studied via the photoluminescence technique. It is found that the dissipative thermal bath that embeds the quantum dots plays an important ...
    • Quantum dissipative master equations : some exact results 

      Zhao, Yang; Chen, Guan Hua (2001)
      With the help of quantum characteristic functions some exact results are found for two quantum dissipative master equations which contain dissipative Liouvillian operators of the Lindblad-type corresponding to two forms ...
    • Quantum dot light-emitting diode with quantum dots inside the hole transporting layers 

      Leck, Kheng Swee; Divayana, Yoga; Zhao, Dewei; Yang, Xuyong; Abiyasa, Agus Putu; Mutlugun, Evren; Gao, Yuan; Liu, Shuwei; Tan, Swee Tiam; Sun, Xiaowei; Demir, Hilmi Volkan (2013)
      We report a hybrid, quantum dot (QD)-based, organic light-emitting diode architecture using a noninverted structure with the QDs sandwiched between hole transporting layers (HTLs) outperforming the reference device structure ...
    • Quantum dot-doped porous silicon metal–semiconductor metal photodetector 

      Chou, Chia-Man; Cho, Hsing-Tzu; Hsiao, Vincent K. S.; Yong, Ken-Tye; Law, Wing-Cheung (2012)
      In this paper, we report on the enhancement of spectral photoresponsivity of porous silicon metal–semiconductor metal (PS-MSM) photodetector embedded with colloidal quantum dots (QDs) inside the pore layer. The detection ...
    • Quantum dots for biophotonics 

      Yong, Ken-Tye (2012)
      This theme issue provides an excellent collection of reviews and original research articles on the study of various bioconjugated quantum dot formulations for diagnostics and therapy applications using biophotonic imaging ...
    • Quantum dots-siRNA nanoplexes for gene silencing in central nervous system tumor cells 

      Lin, Guimiao; Chen, Ting; Zou, Jinyun; Wang, Yucheng; Wang, Xiaomei; Li, Jiefeng; Huang, Qijun; Fu, Zicai; Zhao, Yingying; Lin, Marie Chia-Mi; Xu, Gaixia; Yong, Ken-Tye (2017)
      RNA interfering (RNAi) using short interfering RNA (siRNA) is becoming a promising approach for cancer gene therapy. However, owing to the lack of safe and efficient carriers, the application of RNAi for clinical use is ...
    • Quantum entanglement and the self-trapping transition in polaronic systems 

      Zhao, Yang; Zanardi, Paolo; Chen, Guan Hua (2004)
      We revisit from a quantum-information perspective a classic problem of polaron theory in one dimension. In the context of the Holstein model we show that a simple analysis of quantum entanglement between excitonic and ...
    • Quantum entanglement from random measurements 

      Tran, Minh Cong; Dakić, Borivoje; Arnault, François; Laskowski, Wiesław; Paterek, Tomasz (2015)
      We show that the expectation value of squared correlations measured along random local directions is an identifier of quantum entanglement in pure states, which can be directly experimentally assessed if two copies of the ...
    • Quantum entanglement in nanocavity arrays 

      Liew, Timothy Chi Hin; Savona, V. (2012)
      We show theoretically how quantum interference between linearly coupled modes with weak local nonlinearity allows the generation of continuous variable entanglement. By solving the quantum master equation for the density ...
    • Quantum exciton-polariton networks through inverse four-wave mixing 

      Liew, Timothy Chi Hin; Rubo, Y. G. (2018)
      We demonstrate the potential of quantum operation using lattices of exciton-polaritons in patterned semiconductor microcavities. By introducing an inverse four-wave mixing scheme acting on localized modes, we show that it ...
    • Quantum information with semiconductor nanostructures 

      Adrados, C.; Hivet, R.; Karr, J. P.; Romanelli, M.; Amo, A.; Liew, Timothy Chi Hin; Houdré, R.; Kavokin, A. V.; Pigeon, S.; Ciuti, C.; Carusotto, I.; Bramati, A.; Giacobino, Elisabeth (2011)
      Integrated optoelectronic devices based on exciton-polaritons are very promising for quantum information, since they allow quantum optical effects as well as spin control and spin switching. Moreover the quantum fluid ...
    • Quantum memory with a controlled homogeneous splitting 

      Hétet, G.; Wilkowski, David; Chanelière, T. (2013)
      We propose a quantum memory protocol where an input light field can be stored onto and released from a single ground state atomic ensemble by controlling dynamically the strength of an external static and homogeneous field. ...
    • Quantum optical effective-medium theory and transformation quantum optics for metamaterials 

      Wubs, Martijn; Amooghorban, Ehsan; Zhang, Jingjing; Mortensen, N. Asger (2016)
      While typically designed to manipulate classical light, metamaterials have many potential applications for quantum optics as well. We argue why a quantum optical effective-medium theory is needed. We present such a theory ...
    • Quantum phase transition triggering magnetic bound states in the continuum in graphene 

      Guessi, L. H.; Marques, Y.; Machado, R. S.; Kristinsson, Kristinn; Ricco, L. S.; Shelykh, Ivan A.; Figueira, M. S.; de Souza, M.; Seridonio, A. C. (2015)
      Graphene hosting a pair of collinear adatoms in the phantom atom configuration has density of states vanishing in the vicinity of the Dirac point which can be described in terms of the pseudogap scaling as cube of the ...
    • Quantum plug n’ play: modular computation in the quantum regime 

      Thompson, Jayne; Modi, Kavan; Vedral, Vlatko; Gu, Mile (2018)
      Classical computation is modular. It exploits plug n' play architectures which allow us to use pre-fabricated circuits without knowing their construction. This bestows advantages such as allowing parts of the computational ...
    • Quantum recommendation systems 

      Kerenidis, Iordanis; Prakash, Anupam (2017)
      A recommendation system uses the past purchases or ratings of n products by a group of m users, in order to provide personalized recommendations to individual users. The information is modeled as an m \times n preference ...
    • Quantum reflections and shunting of polariton condensate wave trains : implementation of a logic AND gate 

      Antón, C.; Liew, Timothy Chi Hin; Cuadra, J.; Martín, M. D.; Eldridge, P. S.; Hatzopoulos, Z.; Stavrinidis, G.; Savvidis, P. G.; Viña, L. (2013)
      We study the dynamics of polariton condensate wave trains that propagate along a quasi-one-dimensional waveguide. Through the application of tuneable potential barriers the propagation can be reflected and multiple reflections ...
    • Quantum spectra of Raman photon pairs from a mesoscopic particle 

      Ooi, Chong Heng Raymond; W. M. Edmund, Loh; Kam, Chan Hin (2015)
      Quantum Langevin formalism with noise operators is used to provide quantum descriptions of photon pairs (the Stokes and anti-Stokes fields) emitted by a mesoscopic spherical particle composed of quantum particles in a ...
    • Quantum spin Hall effect and topological phase transition in InNxBiySb1−x−y/InSb quantum wells 

      Song, Zhigang; Bose, Sumanta; Fan, Weijun; Zhang, Dao Hua; Zhang, Yan Yang; Li, Shu Shen (2017)
      Quantum spin Hall (QSH) effect, a fundamentally new quantum state of matter and topological phase transitions are characteristics of a kind of electronic material, popularly referred to as topological insulators (TIs). TIs ...
    • Quantum statistics in a time-modulated exciton-photon system 

      Kryuchkyan, G. Yu.; Shahinyan, A. R.; Shelykh, Ivan A. (2016)
      We consider a system consisting of a large individual quantum dot with excitonic resonance coupled to a single-mode photonic cavity in the nonlinear regime when exciton-exciton interaction becomes important. Quantum ...