Experimental observation of real spectra in Parity-Time symmetric ZRC dimers with positive and negative frequencies

TL;DR

This paper reports the first experimental observation of real spectra in Parity-Time symmetric ZRC dimers, demonstrating oscillations and exceptional points, with potential applications in oscillators and quantum computing devices.

Contribution

It provides the first experimental demonstration of real spectra in PT-symmetric ZRC dimers using imaginary resistors, revealing oscillations and exceptional points.

Findings

Observation of real and imaginary voltage parts in ZRC cells

Identification of exceptional points in the system

Potential applications in oscillators and quantum devices

Abstract

We present in this work the first experimental observation of oscillations in Parity-Time symmetric ZRC dimers. The system obtained is of first order ordinary differential equation due to the use of imaginary resistors. The coupled cells must share the same type of frequency: positive or negative. We observed the real and imaginary parts of the voltage across the components of a ZRC cell. Exceptional points are well identified. This work may be very useful in the generation of new type of oscillators. It can also be used in the design of new optoelectronic devices for major applications in the transport of information and the mimics of two-level systems for quantum computing.