Results 91 to 100 of about 35,825 (292)

Observation of "Partial Coherence" in an Aharonov-Bohm Interferometer with a Quantum Dot

, 2004
We report experiments on the interference through spin states of electrons in a quantum dot (QD) embedded in an Aharonov-Bohm (AB) interferometer. We have picked up a spin-pair state, for which the environmental conditions are ideally similar and have ...
A. J. Leggett, Akira Sano, D. V. Averin, Hisashi Aikawa, Kensuke Kobayashi, M. L. Mehta, S. Katsumoto, Shingo Katsumoto, Y. Imry, Yasuhiro Iye   +9 more
core   +1 more source

Improved Disorder Resilience in Small‐Footprint Photonic Cavities with Periodicity Breaking

Advanced Optical Materials, EarlyView.
Compact photonic crystal cavities with engineered aperiodicity are demonstrated to sustain high quality factormodes and enhanced reproducibility within a minimal footprint. Combining numerical optimization and near‐field measurements, the study reveals how controlled periodicity breaking improves disorder resilience, offering a robust and scalable ...
Nicoletta Granchi, Camilla Gonzini, Matteo Lodde, Gabriele Calusi, René P. J. van Veldhoven, Andrea Fiore, Guillermo Arregui, Francesca Intonti   +7 more
wiley   +1 more source

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

Advanced Photonics Research, EarlyView.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida, Koichi Okamoto, Takuya Matsuda, Hajime Ishihara   +3 more
wiley   +1 more source

Simulation of 1.3?m Quantum Dot laser by Using Four Levels Rate Equations Model

مجلة علوم ذي قار, 2019
By using four-level rate equations model (4LREM), the dynamics of optical gain and output power in 1.3?m quantum dots laser (QD-laser) is investigated. The numerical model of InAs/GaAs (QD-laser) covers four energy levels for electron. In present model,
Hussein H. Warid
doaj  

Coherent Optical Spectroscopy of a Single Quantum Dot Via an Off-Resonant Cavity

, 2011
In recent experiments on coupled quantum dot (QD) optical cavity systems a pronounced interaction between the dot and the cavity has been observed even for detunings of many cavity linewidths.
Bajscy, Michal, Kim, Erik D., Kim, Hyochul, Majumda, Arka, Papageorge, Alexander, Petroff, Pierre, Vuckovic, Jelena   +6 more
core   +1 more source

Liquid Metal Sensors for Soft Robots

Advanced Robotics Research, EarlyView.
This review thoroughly reviews liquid metal sensors in soft robots. Their unique material properties like high conductivity and good biocompatibility are analyzed. Working principles are classified, and applications in environmental perception, motion detection, and human—robot interaction are introduced.
Qi Zhang, Nan Li, Yujia Song, Chen Hua, Tangzhen Guan, Yibing Ma, Cai Cheng, Jing Liu   +7 more
wiley   +1 more source

Full coherent control of nuclear spins in an optically pumped single quantum dot

, 2011
Highly polarized nuclear spins within a semiconductor quantum dot (QD) induce effective magnetic (Overhauser) fields of up to several Tesla acting on the electron spin or up to a few hundred mT for the hole spin.
A Abragam, A. I. Tartakovskii, A. J. Ramsay, A. Lemaître, AE Nikolaenko, AI Tartakovskii, AV Khaetskii, B Eble, C Kloeffel, C Latta, CP Slichter, D Gammon, E Peter, EA Chekhovich, EA Chekhovich, EA Chekhovich, FHL Koppens, G Yusa, H Bluhm, H Sanada, HC Torrey, IT Vink, JR Petta, K. V. Kavokin, M. N. Makhonin, M. S. Skolnick, MN Makhonin, NF Ramsey, P Fallahi, P. Senellart, S Foletti, SI Erlingsson, T Machida, VK Kalevich, X Xu   +34 more
core   +1 more source

Hybrid 2D‐QD MoS₂–PbSe Quantum Dot Broadband Photodetectors with High‐Sensitivity and Room‐Temperature Operation at 2.5 µm [PDF]

, 2021
Biswajit Kundu, Onur Özdemir, Mariona Dalmases, Gaurav Kumar, Gerasimos Konstantatos   +4 more
openalex   +1 more source

Wearable and Implantable Devices for Continuous Monitoring of Muscle Physiological Activity: A Review

Advanced Science, EarlyView.
Recent advances in materials and device engineering enable continuous, real‐time monitoring of muscle activity via wearable and implantable systems. This review critically summarizes emerging technologies for tracking electrophysiological, biomechanical, and oxygenation signals, outlines fundamental principles, and highlights key challenges and ...
Zhengwei Liao, Ata Golparvar, Mohammad Javad Bathaei, Filipe Arroyo Cardoso, Clementine M. Boutry   +4 more
wiley   +1 more source

Phase transitions in quantum dot-Majorana zero mode coupling systems

SciPost Physics Core
The magnetic doublet ground state (GS) of a quantum dot (QD) could be changed to a spin-singlet GS by coupling to a superconductor. In analogy, here we study the GS phase transitions in QD-Majorana zero mode (MZM) coupling systems: GS behaves phase ...
Yue Mao, Qing-Feng Sun
doaj   +1 more source