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Controlling the charge carrier density provides an efficient way to trigger phase transitions and modulate the optoelectronic properties in natural materials. This approach could be used to induce topological transitions in the optical…

Sulfur and nitrogen dual doped graphene have been extensively investigated in the field of oxygen reduction reaction, supercapacitors and batteries, but their magnetic and absorption performance have not been explored. Besides, the effects…

Applied Physics · Physics 2020-03-24 L. Quan , H. T. Lu , F. X. Qin , D. Estevez , Y. F. Wang , Y. H. Li , Y. Tian , H. Wang , H. X. Peng

In the present work, the Mn doped benzimidazole (BMZ) thin films were prepared by simple chemical bath deposition technique. The material was directly deposited as thin film on glass substrates and the metal concentration in the solution…

Materials Science · Physics 2014-04-29 P. A. Praveen , R. Ramesh Babu , SP. Prabhakaran , K. Ramamurthi

We present a general theoretical description of the temporal shaping of narrowband noncollinear type-I down-converted photons using a spectral phase filter with a symmetric phase distribution. By manipulating the spectral phase of the…

Quantum Physics · Physics 2007-05-23 A T Joseph1 , R Andrews1 , E R Pike2 , S Sarkar2

We report on a systematic study of optical properties of (Ga,Mn)As epilayers spanning the wide range of accessible substitutional Mn_Ga dopings. The growth and post-growth annealing procedures were optimized for each nominal Mn doping in…

Plasmons in heavily doped semiconductor layers are optically active excitations with sharp resonances in the 5-15 um wavelength region set by the doping level and the effective mass. Here we demonstrate that volume plasmons can form in…

Mesoscale and Nanoscale Physics · Physics 2020-07-27 Angela Vasanelli , Yanko Todorov , Baptiste Dailly , Sébastien Cosme , Djamal Gacemi , Andrew Haky , Isabelle Sagnes , Carlo Sirtori

In this study, we present a comprehensive quantitative analysis of the radiation emitted by 855 MeV electrons propagating through an oriented diamond hetero-crystal. The crystal consists of two distinct segments: (i) a straight…

Hyperdoping consists of the intentional introduction of deep-level dopants into a semiconductor in excess of equilibrium concentrations. This causes a broadening of dopant energy levels into an intermediate band between the valence and…

Theoretical work has suggested that monolayer MoS2 doped with Mn should behave as a two-dimensional dilute magnetic semiconductor, which would open up possibilities for spintronic applications, device physics, and novel ground states. The…

Single-photon pairs created in the nonlinear process of spontaneous parametric downconversion form the backbone of fundamental and applied experimental quantum information science. Many applications benefit from careful spectral shaping of…

Quantum Physics · Physics 2015-03-17 Agata M. Brańczyk , Alessandro Fedrizzi , Timothy C. Ralph , Andrew G. White

Neutron diffraction and magnetic susceptibility studies of orthorhombic single crystal {\Ksub} confirm the three dimensional (3D) C-type antiferromagnetic (AFM) ordering of the Mn$^{2+}$ moments at $T_{\rm N}=305 \pm 3$ K which is slightly…

Strongly Correlated Electrons · Physics 2019-07-30 Yong Liu , Farhan Islam , Kevin W. Dennis , Wei Tian , Benjamin G. Ueland , Robert J. McQueeney , David Vaknin

Electromagnetic properties of doped perovskites depend sensitively on the doping level. Both the superconducting transition temperature of Bi2Sr2Ca(Pr)Cu2O8+d compounds and the magnetic and electronic transport properties of La(Sr)Co(Fe)O3…

Materials Science · Physics 2009-02-11 K. Vad , J. Hakl , A. Csik , S. Meszaros , M. Kis-Varga , G. A. Langer , A. Pallinger , M. Bodog

Two dimensional materials are attracting new research for optoelectronics and spintronics due to their unique physical properties. A wide range of emerging spintronic devices are achieved from parent and doped two dimensional materials.…

Materials Science · Physics 2023-09-15 S. Koley

For advanced quantum information technology, sources of photon pairs in quantum mechanically factorable states are of great importance for realizing high-fidelity photon-photon quantum gate operations. Here we experimentally demonstrate a…

We calculate the bi-photon state generated by spontaneous parametric down conversion in a thin crystal and under collinear phase matching conditions using a pump consisting of any superposition of Laguerre-Gauss modes. The result has no…

Quantum Physics · Physics 2011-05-26 Alison M. Yao

In this letter, we have investigated the third-order optical nonlinearities of high-quality Ni doped ZnO nanorods crystallized in wurtzite lattice, prepared by the wet chemical method. In our experiments, we found that the two photon…

Electronic Raman scattering from high- and low-energy excitations was studied as a function of temperature, extent of hole doping, and energy of the incident photons in Bi_2Sr_2CaCu_2O_{8 \pm \delta} superconductors. For underdoped…

Superconductivity · Physics 2009-10-30 G. Blumberg , M. Kang , M. V. Klein , K. Kadowaki , C. Kendziora

Photon-pair sources based on thin film lithium niobate on insulator technology have a great potential for integrated optical quantum information processing. We report on such a source of correlated twin-photon pairs generated by spontaneous…

Parametric nonlinear optical processes are instrumental in optical quantum technology for generating entangled light. However, the range of materials conventionally used for producing entangled photons is limited. Metal-organic frameworks…

Optics · Physics 2023-11-30 Simón Paiva , Ruben A. Fritz , Sanoj Raj , Yamil J. Colón , Felipe Herrera

Our predictions, based on density-functional calculations, reveal that surface doping of ZnO nanowires with Bi leads to a linear-in-$k$ splitting of the conduction-band states, through spin-orbit interaction, due to the lowering of the…

Materials Science · Physics 2017-06-07 Mehmet Aras , Sümeyra Güler-Kılıç , Çetin Kılıç
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