Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices
نویسندگان
چکیده
منابع مشابه
Atomic motion in tilted optical lattices
Abstract This paper presents a formalism describing the dynamics of a quantum particle in a onedimensional, time-dependent, tilted lattice. The formalism uses the Wannier-Stark states, which are localized in each site of the lattice, and provides a simple framework allowing fully-analytical developments. Analytic solutions describing the particle motion are explicit derived, and the resulting d...
متن کاملImproving Effective Bandwidth through Compiler Enhancement of Global Cache Reuse
Reusing data in cache is critical to achieving high performance on modern machines, because it reduces the impact of the latency and bandwidth limitations of direct memory access. To date, most studies of software memory hierarchy management have focused on the latency problem in loops. However, today’s machines are increasingly limited by the insufficient memory bandwidth— latency-oriented tec...
متن کاملEdge Waves and Localization in Lattices Containing Tilted Resonators
The paper presents the study of waves in a structured geometrically chiral solid. A special attention is given to the analysis of the Bloch-Floquet waves in a doubly periodic highcontrast lattice containing tilted resonators. Dirac-like dispersion of Bloch waves in the structure is identified, studied, and applied to wave-guiding and wave-defect interaction problems. The work is extended to the...
متن کاملSynchronous overlap and add of spectra for enhancement of excitation in artificial bandwidth extension of speech
In this paper, a new approach that extends narrow-band excitation signals using synchronous overlap and add (SOLA) of spectra have been proposed. Although artificial bandwidth extension (ABE) of speech has been extensively studied, the role of excitation spectra has not been as widely studied as the spectral envelope extension. In this study ABE is investigated with the widely used source-filte...
متن کاملBandwidth Enhancement and Size Reduction of Microstrip Patch Antenna by Magnetoinductive Waveguide Loading
A planar magnetoinductive (MI) waveguide loaded rectangular microstrip patch antenna is presented and discussed. The MI waveguide consists of two planar metamaterial split squared ring resonators (SSRRs) placed in between two microstrip lines. The backward wave propagation takes place through this structure. The rectangular microstrip patch antenna is magnetically coupled to the MI waveguide. T...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Letters
سال: 2020
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.412440