Synthetic PT symmetric system realized based on passive single resonance coil

A resonant coil and symmetrical system technology, applied in the electronic field, can solve the problems of increased occupied space and limited application, and achieve the effect of saving space and simplifying PT symmetrical conditions

Inactive Publication Date: 2020-12-01
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As the number of resonators increases, the space occupied will also increase, and strict symmetry conditions must be met, which will limit its practical application.

Method used

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  • Synthetic PT symmetric system realized based on passive single resonance coil
  • Synthetic PT symmetric system realized based on passive single resonance coil
  • Synthetic PT symmetric system realized based on passive single resonance coil

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Embodiment Construction

[0042] In the field of optics, the Whispering gallery (WG) structure resonator, as a special resonant cavity, contains two different merged modes (ie, clockwise and counterclockwise modes). According to the momentum conservation condition, a certain mode (such as clockwise mode) in the WG structure can be selectively excited according to the direction of the incident wave. If there is a scatterer near the resonator, the interaction between the scatterer and the evanescent field of the resonator will generate both clockwise and counterclockwise modes. In this way, scattering near the surface of the resonator will cause bi-directional coupling of the two modes. The original clockwise mode of the resonator is coupled with another opposite mode (counterclockwise mode) induced by the scatterer.

[0043] Based on the above principles, the present invention first constructs a simple resonant unit, then loads a lumped unit on the basis of the resonant unit to achieve structural symme...

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Abstract

The invention relates to a synthetic PT symmetric system realized based on a passive single resonance coil. The synthetic PT symmetric system comprises a first resonance unit, a first lumped unit anda first scattering capacitor, wherein the first resonance unit and the first lumped unit are electrically connected through the first scattering capacitor, and the capacitive coupling of the first lumped unit is equivalent to the capacitive coupling of the first resonance unit. According to the invention, traditional inductive coupling is replaced by capacitive coupling, and an inductive coil witha relatively large volume is replaced by a capacitor with a relatively small volume, so that the space occupied by the whole system is saved, adaptive parameter adjustment of the system is facilitated, and PT symmetry conditions are simplified; and a new thought is provided for exploring non-Hermite physical characteristics in the field of electronics by researching a synthetic PT symmetric system.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a synthetic PT symmetrical system realized by a passive single resonant coil. Background technique [0002] In recent years, there has been increasing interest in the study of Parity-time (PT) symmetry in quantum mechanics. PT symmetry suggests that non-Hermitian systems can exhibit pure spectra up to a certain phase transition point. When the PT symmetry is spontaneously broken, that is, a phase transition occurs near the Exceptional point (EP), the pure real spectrum becomes a complex spectrum. Recently, the PT symmetry concept has sparked great research interest in optics and photonics to study some important aspects of non-Hermitian systems, since it can exploit the interplay between gain / loss and coupling strength to manipulate light waves to achieve desired performance. These new discoveries include coherent perfect absorption, advanced lasers, and topological states...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/05
CPCH02J50/05
Inventor 曾超孙勇郭志伟李果余跃李云辉方恺张冶文江海涛陈鸿
Owner TONGJI UNIV
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