Results 91 to 100 of about 856,893 (374)
THz‐Driven Coherent Phonon Fingerprints of Hidden Symmetry Breaking in 2D Layered Hybrid Perovskites
Advanced Materials, EarlyView.Intense THz pulses are employed to drive coherent phonons in 2D Ruddlesden‐Popper hybrid metal‐halide perovskites (HOIPs) from the (PEA)2(MA)n‐1PbnI3n+1 family, revealing mode‐selective spectroscopic signatures of inversion symmetry breaking in those nominally centrosymmetric materials. These findings provide a handle to decode nonlinear phonon driving
Joanna M. Urban +14 more
wiley +1 more source
Characterization of Complex Stacking of Semiconductors Through Near Field Imaging and Spectroscopy
Advanced Materials, EarlyView.SNOM imaging and spectroscopy on a mechanically cleaved facet is used to characterize the different layers of complex epitaxial heterostructures composed of a type II superlattice and highly doped semiconductors. Both the geometrical parameters of the stack and the optical properties of the individual layers and of the interfaces are retrieved, as well
Laure Tailpied +8 more
wiley +1 more source
Cooper pairing and single particle properties of trapped Fermi gases
, 2002 We calculate the elementary excitations and pairing of a trapped atomic Fermi gas in the superfluid phase. The level spectra and pairing gaps undergo several transitions as the strength of the interactions between and the number of atoms are varied.
A.G. Truscott +12 more
core +1 more source
The Quantum Harmonic Otto Cycle [PDF]
Entropy, 2016 The quantum Otto cycle serves as a bridge between the macroscopic world of heat engines and the quantum regime of thermal devices composed from a single element.
R. Kosloff, Y. Rezek
semanticscholar +1 more source
Advanced Materials, EarlyView.A nonlinear optical microscopy technique is introduced that enables rapid imaging of hexagonal boron nitride monolayers, which are usually optically invisible. The nonlinear mixing of mid‐infrared and visible laser pulses enables full crystallographic imaging through phase‐resolved sum‐frequency generation microscopy, where the resonant excitation of a
Niclas S. Mueller +15 more
wiley +1 more source
Deterministic nonlinear phase gates induced by a single qubit
New Journal of Physics, 2018 We propose deterministic realizations of nonlinear phase gates by repeating a finite sequence of non-commuting Rabi interactions between a harmonic oscillator and only a single two-level ancillary qubit.
Kimin Park, Petr Marek, Radim Filip
doaj +1 more source
Jurnal Rekayasa Elektrika, 2017 In telecommunications equipment, an oscillator has a function to generate a carrier signal. As the carrier signal, a high stability performance is required. The frequency shift caused by component tolerances.
Teguh Firmansyah, Gunawan Wibisono
doaj +1 more source
Horizons and the Thermal Harmonic Oscillator
, 2004 We show that two-dimensional anti-de Sitter spacetime (AdS_2) can be put in correspondence, holographically, both with the harmonic oscillator and the free particle.
Brigante M. +15 more
core +2 more sources
Role of dissipation in the stability of a parametrically driven quantum harmonic oscillator [PDF]
, 2021 Subhasish Chaki +3 more
openalex +1 more source
Advanced Materials, EarlyView.In the work reported herein, the catalytic effects of acid sites on electrocatalytic glycerol oxidation reaction are investigated by using a novel catalytic material system that integrates Pt metal sites with acidic Al sites. Abstract The catalytic role and function of acid sites in solid acid catalysts, such as zeolites, are well understood in the ...
Ju Ye Kim +11 more
wiley +1 more source