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The stacking faults (deviates from Bernal) will break the translational symmetry of multilayer graphenes and modify their electronic and optical behaviors to the extent depending on the interlayer coupling strength. This paper addresses the…

Materials Science · Physics 2015-05-13 Zhenhua Ni , Lei Liu , Yingying Wang , Zhe Zheng , Lain-Jong Li , Ting Yu , Zexiang Shen

We propose how to achieve strong phonon blockade (PB) in a hybrid spin-mechanical system in the weak-coupling regime. We demonstrate the implementation of magnetically-induced two-phonon interactions between a mechanical cantilever…

Quantum Physics · Physics 2021-12-17 Yan Wang , Jin-Lei Wu , Jin-Xuan Han , Yan Xia , Yong-Yuan Jiang , Jie Song

Photonic time crystals (PTCs) are spatially uniform media with periodic modulation in time, enabling momentum bandgaps and the parametric amplification of light. While their potential in optical systems is very promising, practical…

A Majorana-based qubit can form within the fermion parity subspace of a two-island topological superconductor setup consisting of four Majorana zero modes. We study the relaxation time of this Majorana qubit induced by the intrinsic…

Mesoscale and Nanoscale Physics · Physics 2018-09-05 Yang Song , S. Das Sarma

Few-layer graphene deposited on semiconductor nanorods separated by undoped spacers has been studied in perspective for the fabrication of stable nanoresonators. We show that an applied bias between the graphene layer and the nanorod…

This paper expands on the previously described reflectionless filters - that is, filters having, in principle, identically-zero reflection coefficient at all frequencies - by introducing a wide variety of new reflectionless structures that…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 Matthew A. Morgan , Tod A. Boyd

In the field of optics, bound state in the continuum (BIC) has been researched in many photonic crystals and periodic structures due to a strong resonance and an ultrahigh Q factor. Some designs of narrowband transmission filters, lasers,…

Optics · Physics 2022-04-26 Yuhang Ruan , Jicheng Wang , Zheng-Da Hu , Yixiang Wang

Thermal transport in nanoribbon based nanostructures is critical to advancing its applications. Wave effects of phonons can give rise to controllability of heat conduction in nanostructures beyond that by particle scattering. In this paper,…

Mesoscale and Nanoscale Physics · Physics 2019-01-02 Dengke Ma , Xiao Wan , Nuo Yang

We have realized nanometer size constrictions in ballistic graphene nanoribbons grown on sidewalls of SiC mesa structures. The high quality of our devices allows the observation of a number of electronic quantum interference phenomena. The…

Mesoscale and Nanoscale Physics · Physics 2016-05-25 Jens Baringhaus , Mikkel Settnes , Johannes Aprojanz , Stephen R. Power , Antti-Pekka Jauho , Christoph Tegenkamp

We propose an experimentally viable setup for the realization of one-dimensional ultracold atom gases in a nanoscale magnetic waveguide formed by two doubly-clamped suspended carbon nanotubes. All common decoherence and atom loss mechanisms…

Other Condensed Matter · Physics 2007-05-23 V. Peano , M. Thorwart , C. Mora , R. Egger

We present a computational study of the two-phonon Raman spectra of silicene and graphene within a density-functional non-orthogonal tight-binding model. Due to the presence of linear bands close to the Fermi energy in the electronic…

Mesoscale and Nanoscale Physics · Physics 2016-04-29 Valentin N. Popov , Philippe Lambin

We theoretically discuss one-photon and two-photon double-slit interferences for spontaneous and stimulated parametric down-conversions. We show that the two-photon sub-wavelength interference can exist in a general spontaneous parametric…

Quantum Physics · Physics 2009-11-10 De-Zhong Cao , Zhuan Li , Yan-Hua Zhai , Kaige Wang

Resonant behavior of the Raman process is predicted when the laser frequency is close to the orbital excitation energy of LaMnO3 at 2 eV. The incident photon creates a vibrationally excited self-trapped ``orbiton'' state from the…

Strongly Correlated Electrons · Physics 2009-10-31 Vasili Perebeinos , Philip B. Allen

We study Bragg scattering at 1D atomic lattices. Cold atoms are confined by optical dipole forces at the antinodes of a standing wave generated inside a laser-driven cavity. The atoms arrange themselves into an array of lens-shaped layers…

Quantum Physics · Physics 2009-11-11 S. Slama , C. von Cube , M. Kohler , C. Zimmermann , Ph. W. Courteille

Phonon-related decoherence effects in a quantum double-well two-level subsystem coupled to a solid are studied theoretically by the example of deformation phonons. Expressions for the reduced density matrix at T=0 are derived beyond the…

Other Condensed Matter · Physics 2009-11-13 L. A. Openov

The Raman spectra of two G-bands and a radial breathing mode (RBM) of unfilled and filled single-wall semiconducting and metallic carbon nanotubes have been investigated theoretically, in the presence of electron-phonon and phonon-phonon…

Other Condensed Matter · Physics 2009-11-13 S. Gayen , S. N. Behera , S. M. Bose

This work explores how phonon perturbations can induce the breaking of electronic degeneracies near the Fermi level and how this response can be interpreted from a chemical perspective through the SSAdNDP method. We apply this approach to a…

Raman spectroscopy is one of the most extended experimental techniques to investigate thin-layered 2D materials. For a complete understanding and modeling of the Raman spectrum of a novel 2D material, it is often necessary to combine the…

This paper presents a theoretical analysis of the recently reported observation of acoustic stop bands in two-dimensional scattering arrays (Robertson and Rudy, J. Acoust. Soc. Am. {\bf 104}, 694, 1998). A self-consistent wave scattering…

Soft Condensed Matter · Physics 2009-11-07 You-Yu Chen , Zhen Ye

We investigate interference between topological interfacial modes in a semiconductor photonic crystal platform with Dirac frequency dispersions, which can be exploited for interferometry switch. It is showcased that, in a two-in/two-out…

Optics · Physics 2023-11-21 Xing-Xiang Wang , Tomohiro Amemiya , Xiao Hu
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