Results 71 to 80 of about 6,416 (187)

Confined Hot Carrier Cooling Via Excited‐State Energy Gap Engineering in Graphyne Carbon Allotropes

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The excited‐state energy gap (EEG), regulated by the concentration of sp‐hybridized carbon, provides an effective handle for tuning electron–phonon coupling behavior. This design enables long‐lived confinement of hot carriers near the top of the EEG with controllable energy levels.
Fulong Dai, Zhaozhao Xiong, Yingcong Liu, Feiyu Cheng, Haochun Sun, Zhenfa Zheng, Jin Zhao, Zhuojian Liang, Zhuo Kang, Yue Zhang   +9 more
wiley   +1 more source

Chiral perovskites for next‐generation chiral optoelectronics and spintronics

FlexMat, EarlyView.
Benefiting from structural inversion symmetry breaking and strong spin‐orbit coupling, chiral perovskites possess intriguing chiral optical and spin properties. We overview their advances and core applications in perovskite solar cells, circularly polarized light detectors and spin circularly polarized‐light‐emitting diodes, offering great potential ...
Mengyao Zhang, Rui Xu, Xueyan Hou, Sihan Du, Mengting Xu, Jia Wu, Zhichao Lin, Pei Liu, Qiang Zhuang, Xiaoming Zhao, Yang Yang, Wenda Shi, Wanlin Guo, Jie Kong   +13 more
wiley   +1 more source

Bound on the distance between controlled quantum state and target state under decoherence

Journal of Physics Communications
To implement quantum information technologies, carefully designed control for preparing a desired state plays a key role. However, in realistic situation, the actual performance of those methodologies is severely limited by decoherence.
Kohei Kobayashi
doaj   +1 more source

Decoherence in Excited Atoms by Low-Energy Scattering

Atoms, 2016
We describe a new mechanism of decoherence in excited atoms as a result of thermal particles scattering by the atomic nucleus. It is based on the idea that a single scattering will produce a sudden displacement of the nucleus, which will be perceived by ...
Diego A. Quiñones, Benjamin Varcoe
doaj   +1 more source

Endohedral fullerenes as qubits: From synthesis to quantum computing applications

InfoMat, EarlyView.
Endohedral fullerenes emerge as promising platforms for qubits and qudits. This review surveys the primary synthesis routes, from arc‐discharge to high‐yield molecular surgery. It then details spin manipulation and readout in key systems, including metal‐based, cluster, and nitrogen‐containing fullerenes.
Jeong‐Seok Nam, Jiye Han, Jin‐Myung Choi, Franklin H. Cho, Daniel K. Park, Seunghee Park, Yoshifumi Hashikawa, Yasujiro Murata, Eunsang Kwon, Dong‐Hwan Kim, Junki Kim, Il Jeon   +11 more
wiley   +1 more source

Decoherence in the Starobinsky Model [PDF]

General Relativity and Gravitation, 1999
Starobinsky described an inflationary scenario in which quantum corrections to vacuum Einstein equations drive the inflation. The quantum cosmology of the model is studied by solving the Wheeler-DeWitt equation. A connection between uncertainty requirement, randomness in initial states and curvature fluctuation is studied with a Schrödinger-type ...
Biswas, S., Shaw, A., Modak, B.
openaire   +2 more sources

Decoherence by black holes via holography

Journal of High Energy Physics
In this note, we reexamine decoherence effects in quantum field theories with gravity duals. The thought experiment proposed in [1, 2], which reveals novel decoherence patterns associated with black holes, also manifests itself from the perspective of ...
Shoichi Kawamoto, Da-Shin Lee, Chen-Pin Yeh   +2 more
doaj   +1 more source

Blind Witnesses Quench Quantum Interference without Transfer of Which-Path Information

Entropy, 2020
Quantum computation is often limited by environmentally-induced decoherence. We examine the loss of coherence for a two-branch quantum interference device in the presence of multiple witnesses, representing an idealized environment.
Craig S. Lent
doaj   +1 more source

Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generation

Physical Review Research, 2021
Decoherence remains one of the most serious challenges to the implementation of quantum technology. It appears as a result of the transformation over time of a quantum superposition state into a classical mixture due to the quantum system interacting ...
Fu Li, Tian Li, Girish S. Agarwal
doaj   +1 more source

Quantization of Polaritons Confined in Dielectric Structures

Laser &Photonics Reviews, EarlyView.
This study addresses the limitations of the Hopfield model of strong light‐matter coupling in the case of structured dieletrics. A method to derive quantum models in the polariton basis using Bogoliubov transformation and third quantization is introduced, demonstrating how to boost interaction strength and engineer nonlocal interactions for strongly ...
Amir Rahmani, Dogyun Ko, Maciej Dems, Andrzej Opala, Michał Matuszewski   +4 more
wiley   +1 more source