-symmetric electronics

By J. Schindler, Z. Lin, J. Lee, Hamidreza Ramezani, F. Ellis, T. F. D. O. Physics, Wesleyan University, Usa. 2012

225 citations recorded by the source corpus.

We show both theoretically and experimentally that a pair of inductively coupled active LRC circuits (dimer), one with amplification and another with an equivalent amount of attenuation, display all the features which characterize a wide class of non-Hermitian systems which commute with the joint parity-time operator: typical normal modes, temporal evolution, and scattering processes. Utilizing a Liouvilian formulation, we can define an underlying -symmetric Hamiltonian, which provides important insight for understanding the behavior of the system. When the -dimer is coupled to transmission lines, the resulting scattering signal reveals novel features which reflect the -symmetry of the scattering target. Specifically we show that the device can show two different behaviors simultaneously, an amplifier or an absorber, depending on the direction and phase relation of the interrogating waves. Having an exact theory, and due to its relative experimental simplicity, -symmetric electronics offers new insights into the properties of -symmetric systems which are at the forefront of the research in mathematical physics and related fields. This article is part of a special issue of Journal of Physics A: Mathematical and Theoretical devoted to ‘Quantum physics with non-Hermitian operators’.

Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/8daea39f96edbafc4427cb3ed685c768c9f042f6

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In Atomic and Molecular Physics, and Optics

  1. Xiang Zhang
  2. Jie Zhu
  3. Andrea Alù

In Statistical and Nonlinear Physics

  1. Xiang Zhang

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