Article
Optics
Ning Liu, Xin Wang, Xia Wang, Xiao-San Ma, Mu-Tian Cheng
Summary: We theoretically investigate the scattering properties of single photons in a waveguide chirally coupled to a giant atom. When considering the energy loss of the giant atom, the transmission spectrum of a single photon depends on its incident direction. We calculate the difference in transmission probabilities for opposite transport directions, denoted as Delta T. It is found that the position and width of Delta T are both dependent on the size of the giant atom. Furthermore, the position and frequency width of the maximum Delta T can be modulated by a classical laser beam. Our findings are relevant for the control of single photons in the design of quantum devices involving giant atoms.
Article
Chemistry, Physical
Tom Galle, Daniel Spittel, Nelli Weiss, Volodymyr Shamraienko, Helena Decker, Maximilian Georgi, Rene Huebner, Nadia Metzkow, Christine Steinbach, Dana Schwarz, Vladimir Lesnyak, Alexander Eychmueller
Summary: The research transforms CdSe NPLs into PbSe NPLs suitable for optoelectronic applications through cation exchange, ligand exchange, and electronic coupling, successfully fabricating a photodetector with fast light response at low operational voltages on a commercial substrate.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Computer Science, Interdisciplinary Applications
R. Duda, J. Keski-Rahkonen, J. Solanpaa, E. Rasanen
Summary: TINIE is a state-of-the-art quantum transport simulation framework that can efficiently perform various calculations and has a wide range of applications. It supports calculations ranging from transmission and conductivity to local density of states, and can simulate diverse systems while handling impurities and imperfections.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
Article
Automation & Control Systems
Ran Huang, Zhengtao Ding
Summary: This article investigates delay compensation in consensus control under undirected graphs using output feedback. Two distributed adaptive output feedback consensus protocols are proposed, one ensuring local consensus and the other proven to be a global consensus controller under certain conditions. Simulation results on neutrally stable systems validate the effectiveness of the proposed scheme.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2021)
Article
Chemistry, Physical
Lei Jin, Jiabin Liu, Xin Liu, Daniele Benetti, Gurpreet Singh Selopal, Xin Tong, Ehsan Hamzehpoor, Faying Li, Dmytro F. Perepichka, Zhiming M. Wang, Federico Rosei
Summary: Thick-shell colloidal quantum dots (QDs) with size/composition/shape-tunable properties are promising for solar technologies. However, the commonly used toxic metal elements and wide bandgap of the shell limit their performance. This study develops eco-friendly AgInSe2/AgInS2 core/shell QDs, which are optically active in the NIR region and suitable for solar energy conversion. By using a template-assisted cation exchange method, gradient AgInSeS shell layers are incorporated, resulting in improved charge transfer and higher current density in the photoelectrochemical cells.
Article
Multidisciplinary Sciences
Paul L. J. Helgers, James A. H. Stotz, Haruki Sanada, Yoji Kunihashi, Klaus Biermann, Paulo Santos
Summary: This study demonstrates the dynamic control of moving electron spins via contactless gates that move together with the spins. It realizes the control of electron spins by utilizing potential dots defined by a surface acoustic wave. The significance lies in providing a key component for on-chip spin information processing with a photonic interface.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Yunmo Sung, Wonseok Lee, Eunjae Lee, Young Ho Ko, Sungjee Kim
Summary: The surface atom stoichiometry of Ag2S NCs is controlled through ion-pair ligand-assisted surface reactions. Different combinations of cation and anion pairs are studied, leading to the synthesis of cation-rich-surfaced, anion-rich-surfaced, and perfectly stoichiometric Ag2S NCs. The ion-pair-assisted surface chemistry enables the enhancement of fluorescence intensity and epitaxial growth performance of Ag2S NCs.
CHEMISTRY OF MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Ankan Mukherjee, Bhaskaran Muralidharan
Summary: Recent experiments on current blockades in 2D material quantum-dot platforms have provided new opportunities for spin and valley-qubit processing. In this study, we propose a model to simulate the Pauli blockades in a double quantum dot structure, taking into account the interplay of Coulomb interactions, inter-dot tunneling, Zeeman splittings, and intrinsic spin-orbit coupling. We show that the conducting and blocking states responsible for the blockades cannot be explained solely by spin or valley pseudo-spins, but are a result of the coupled effect of all degrees of freedom. We also numerically predict the occurrence of Pauli blockades and verify our model with experimental data, suggesting its potential application in machine learning algorithms.
Article
Nanoscience & Nanotechnology
S. Lim, J. Kim, J. Y. Park, J. Min, S. Yun, T. Park, Y. Kim, J. Choi
Summary: Chloride-passivated SnO2 quantum dots were found to effectively suppress the cubic-phase degradation of CsPbI3 perovskite quantum dots, leading to improved device stability and power conversion efficiency in solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Ahmal Jawad Zafar, Aranyo Mitra, Vadym Apalkov
Summary: In this study, the electron dynamics of a graphene nanoring in the presence of an ultrashort optical pulse were theoretically investigated. It was found that circularly polarized pulses can induce valley polarization in the graphene nanoring, whereas no valley polarization is observed in a graphene monolayer. The magnitude of the valley polarization in the graphene nanoring depends on the system parameters.
Article
Chemistry, Multidisciplinary
Emma L. Minarelli, Jonas B. Rigo, Andrew K. Mitchell
Summary: This article investigates a graphene-based two-channel charge-Kondo device and uncovers a rich phase diagram. It finds that the strong coupling pseudogap Kondo phase persists in the channel-asymmetric case. Furthermore, despite the vanishing density of states in the graphene leads, a finite linear conductance is observed at the frustrated critical point.
Article
Chemistry, Inorganic & Nuclear
Kai Xia, Guang Tao Fei, Shao Hui Xu, Xu Dong Gao, Yi Fei Liang
Summary: HgTe nanoparticles have different shapes depending on the planes and the reaction temperature, due to the combination of Hg unsaturated bonds and -NH2 of OAm. The understanding of their growth mechanisms is crucial for their applications in infrared photodetection. The shape control of HgTe nanoparticles is achieved through the synergistic effect of anisotropic passivation, surface free energy, and reaction temperatures.
INORGANIC CHEMISTRY
(2023)
Editorial Material
Multidisciplinary Sciences
Nico W. Hendrickx, Menno Veldhorst
Summary: This paper introduces a four-qubit quantum processor based on germanium hole spin quantum dots, demonstrating universal quantum logic on qubits arranged in a two-by-two grid and showing that spin qubits can be coupled in two dimensions.
Article
Automation & Control Systems
Zhiying Wu, Junlin Xiong, Min Xie
Summary: This paper investigates the event-triggered control problem for networked control systems subject to deception attacks. An improved event-triggered scheme is proposed to reduce transmission rate and a new switched time-delay system model is developed. Exponential mean-square stability criteria are derived using a constructed Lyapunov function, and a co-design method is developed to obtain trigger parameters and mode-dependent controller gains. The proposed scheme is verified by an unmanned aerial vehicle system.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2021)
Article
Chemistry, Multidisciplinary
Tuhin Shuvra Basu, Simon Diesch, Ryoma Hayakawa, Yutaka Wakayama, Elke Scheer
Summary: The study investigated the modified electronic structure and single-carrier transport of individual hybrid core-shell metal-semiconductor Au-ZnS quantum dots using a scanning tunnelling microscope. The evolution of energy structure and charge transport from the metallic building block core to the core-shell metal-semiconductor QDs was revealed. The findings highlight the potential for fabricating tailored metal-semiconductor QDs for single-electron devices.
Article
Physics, Multidisciplinary
Wassilij Kopylov, Clive Emary, Eckehard Schoell, Tobias Brandes
NEW JOURNAL OF PHYSICS
(2015)
Article
Optics
Greg Schild, Clive Emary
Article
Optics
C. Emary
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2013)
Article
Physics, Multidisciplinary
Neill Lambert, Simone De Liberato, Clive Emary, Franco Nori
NEW JOURNAL OF PHYSICS
(2013)
Article
Physics, Multidisciplinary
L. D. Contreras-Pulido, C. Emary, T. Brandes, Ramon Aguado
NEW JOURNAL OF PHYSICS
(2013)
Article
Optics
Clive Emary, J. P. Cotter, Markus Arndt
Article
Materials Science, Multidisciplinary
Clive Emary, John Gough
Article
Physics, Fluids & Plasmas
Robert Gernert, Clive Emary, Sabine H. L. Klapp
Article
Physics, Multidisciplinary
Costantino Budroni, Clive Emary
PHYSICAL REVIEW LETTERS
(2014)
Review
Physics, Multidisciplinary
Clive Emary, Neill Lambert, Franco Nori
REPORTS ON PROGRESS IN PHYSICS
(2014)
Correction
Physics, Multidisciplinary
Clive Emary, Neill Lambert, Franco Nori
REPORTS ON PROGRESS IN PHYSICS
(2014)
Article
Physics, Multidisciplinary
Lewis A. Clark, Masaya Kataoka, Clive Emary
NEW JOURNAL OF PHYSICS
(2020)
Article
Physics, Multidisciplinary
Gui-Lei Zhu, Hamidreza Ramezani, Clive Emary, Jin-Hua Gao, Ying Wu, Xin-You Lu
PHYSICAL REVIEW RESEARCH
(2020)
Article
Materials Science, Multidisciplinary
Nathan Ho, Clive Emary
Article
Quantum Science & Technology
Rajpal Thethi, Clive Emary
QUANTUM SCIENCE AND TECHNOLOGY
(2017)
