Article
Nanoscience & Nanotechnology
M. J. Holmes, T. Zhu, F. C. -P. Massabuau, J. Jarman, R. A. Oliver, Y. Arakawa
Summary: High-purity pulsed single-photon emission has been measured from an InGaN quantum dot, showing promising potential for application in quantum key distribution systems.
Article
Chemistry, Multidisciplinary
Mingyuan Xie, Jie Guo, Xiaoyu Zhang, Chenghao Bi, Lin Zhang, Zema Chu, Weitao Zheng, Jingbi You, Jianjun Tian
Summary: This study presents a solution to achieve high-efficiency pure-red perovskite light-emitting diodes (PeLEDs) by stabilizing the structure of quantum dots and reducing adverse effects. The use of composite ligands helped stabilize the strong-confined quantum dots and suppress Auger recombination in the devices. Additionally, adjustments in the valence band of the quantum dots improved charge injection balance in the PeLEDs.
Article
Optics
Madhulita Sundaray, Sukanta Kumar Tripathy, Satrujit Mishra
Summary: A new method to synthesize L-Cystein ethyl ester hydrochloride (LEEH) caped ZnTe quantum dot (Q.D.) using a chemical bottom-up approach is reported in this paper. The transmission characteristics of the synthesized Q.D.s coated on an optical fibre are studied by illuminating it with a laser diode.
Article
Chemistry, Multidisciplinary
Taek Joon Kim, Sang-hun Lee, Eunji Lee, Changwon Seo, Jeongyong Kim, Jinsoo Joo
Summary: In this study, the energy band alignments of a heterostructure consisting of MAPbI(3) perovskite sheets and CdSe-ZnS core-shell quantum dot layers were modulated, leading to the emission of far-red interlayer excitons. These excitons exhibited a longer lifetime and strong dipole alignment at the heterojunction. An abnormal behavior of the optical characteristics near the phase transition temperature of MAPbI(3) was observed. Photodetectors based on MAPbI(3)/CdSe-ZnS-QD heterostructures showed increased photocurrent and detectivity compared to MAPbI(3) under interlayer exciton excitation.
Article
Chemistry, Analytical
Guosheng Zhang, Sheng Zhou, Guoqing Yan, Tongtong Jiang, Zhexiang Wang, Zhaoyuan Guan, Kui Chen, Zhigang Cao, Benli Yu
Summary: This study introduced quantum dots-crosslinked light-guiding hydrogels for detecting folate receptor-overexpressed cancer cells. The prepared hydrogels showed outstanding fluorescence stability and specific detection ability. Detection and measurement of cancer cell concentrations were achieved, with potential for real-time in vivo applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Nanoscience & Nanotechnology
N. Hernandez, R. A. Lopez-Doria, M. R. Fulla
Summary: This study calculated the electronic and singly ionized double donor states in a GaAs-A1GaAs coupled quantum dot-ring. The proposed model accurately captures the geometry of realistic coupled quantum dot rings and allows for the study of the energy spectrum as a function of various parameters. The results demonstrate the strong dependence of the electron and singly ionized double donor states on the geometry of the coupled quantum dot-ring and external probes.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Nanoscience & Nanotechnology
Jan Kettler, Nitika Vaish, Laure Mercier de Lepinay, Benjamin Besga, Pierre-Louis de Assis, Olivier Bourgeois, Alexia Auffeves, Maxime Richard, Julien Claudon, Jean-Michel Gerard, Benjamin Pigeau, Olivier Arcizet, Pierre Verlot, Jean-Philippe Poizat
Summary: Hybrid quantum optomechanical systems interface a macroscopic mechanical degree of freedom with a single two-level system, such as a single spin, a superconducting qubit, or a single optical emitter. While progress has been made in the microwave domain, challenges remain in the optical domain in achieving the reciprocal effect of a single quantum system on a macroscopic mechanical resonator.
NATURE NANOTECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Quanbo Jiang, Prithu Roy, Jean-Benoit Claude, Jerome Wenger
Summary: In this research, plasmonic nanoantennas were used to trap single colloidal quantum dots and enhance their photoluminescence without the need for further processing, achieving precise positioning of the quantum emitter at the nanoantenna hotspot. The dedicated nanoantenna design exhibited high trap stiffness for quantum dot trapping and relatively low trapping power, resulting in significantly improved emission characteristics of the single quantum dot.
Article
Quantum Science & Technology
Manish Kumar Mehta, Joseph Thomas Andrews, Pratima Sen
Summary: In this paper, a novel method is proposed to overcome the limitations of exciton and biexciton states only appearing at low temperatures, as well as the complexity of using lasers with different polarization states for CNOT operations. By utilizing ultrafast magnetic pulse CNOT gate operation in Mn-doped InSb quantum dots at room temperature, with only a circularly polarized laser pulse, the proposed method shows a significantly large fidelity calculation for CNOT gate.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Quantum Science & Technology
Woong Bae Jeon, Jong Sung Moon, Kyu-Young Kim, Young-Ho Ko, Christopher J. K. Richardson, Edo Waks, Je-Hyung Kim
Summary: This study demonstrates a highly efficient fiber-interfacing photonic device that launches single photons from quantum dots directly into a standard single-mode fiber. The device utilizes optimized photonic structures and a precise pick-and-place technique, resulting in a plug-and-play single-photon device.
ADVANCED QUANTUM TECHNOLOGIES
(2022)
Article
Engineering, Electrical & Electronic
Haipeng Zhang, Mu Xu, Zhensheng Jia, Luis Alberto Campos, Zhenguo Lu, Chun-Ying Song, Pedro Barrios, Mohamed Rahim, Ping Zhao, Philip J. Poole
Summary: The study introduces a converged optical-wireless WDM access network architecture that is capable of transmitting coherent and millimeter wave signals simultaneously. The feasibility of this architecture is experimentally demonstrated with signals being delivered over 50km and 20km fiber links.
IEEE PHOTONICS JOURNAL
(2021)
Article
Physics, Applied
L. Rickert, F. Schroeder, T. Gao, C. Schneider, S. Hoefling, T. Heindel
Summary: This study reports a technique for fiber-coupling of electrically driven cavity-enhanced quantum dot light emitting devices, achieving efficient quantum light sources for applications in quantum information. The developed process allows direct and permanent coupling of quantum dot micropillar cavities to single-mode optical fibers, with a mode-coupling efficiency of around 46%. Additionally, pulsed current injection at a repetition rate exceeding 200MHz and low-temperature operation down to 77K of the fiber-coupled micropillar device were demonstrated.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Gi Jung Lee, Seung Chan Hong, Jung-Gyun Lee, Jae-Hyeon Ko, Taehee Park, Young Wook Ko, Sergey Lushnikov
Summary: A new type of remote red quantum-dot (QD) component was designed and fabricated to improve the color-rendering properties of conventional white LED lightings. The red QD caps placed over white LEDs enhanced the red components in the long-wavelength range resulting in an increase of the color rendering index (CRI).
Article
Chemistry, Multidisciplinary
Hao Zhang, Parinaz Moazzezi, Juanjuan Ren, Brett Henderson, Cristina Cordoba, Vishal Yeddu, Arthur M. Blackburn, Makhsud Saidaminov, Irina Paci, Stephen Hughes, Reuven Gordon
Summary: Perovskite quantum dots (PQDs) show promise in various applications, including efficient solar cells, bright light emitting devices, and quantum sources of light. Researchers used double-nanohole optical trapping to size individual dots and observed the coupling between dots. The findings provide insights for in situ control of PQD growth and studies of their coupling with quantum information applications in mind.
Article
Engineering, Electrical & Electronic
Shen Tong, Xinlin Chen, Jia Li, Ping Qiu, Ke Wang
Summary: This study demonstrates the elliptically-polarized soliton self-frequency shift phenomenon in a photonic-crystal rod, utilizing experimental, numerical, and analytical methods to elucidate its fundamental aspects. The results show that wavelength-shifted, elliptically-polarized solitons can be generated through the elliptically-polarized SSFS in the PC rod, shedding new light on soliton physics.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
