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Updated: Feb 6, 2026

Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy ATOM
Published on: June 28, 2017
Realization of simultaneously parity-time-symmetric and parity-time-antisymmetric susceptibilities along the
Abstract:
We propose an all-optical-control scheme to simultaneously realize parity-time (๐ซ๐ฏ)-symmetric and ๐ซ๐ฏ-antisymmetric susceptibilities along the propagation direction of light by applying an external magnetic field. Through the light-atom interaction within a double-ฮ configuration, the resulting position-dependent susceptibilities for the interacting fields can be manipulated through the relative phase between them. In particular, for the probe field, one can switch its refractive index from the ๐ซ๐ฏ-symmetry to ๐ซ๐ฏ-antisymmetry by just varying the phase. Based on the quantum interference among transition channels in a closed loop, analytical formulas are also derived to illustrate the conditions for ๐ซ๐ฏ-symmetry and ๐ซ๐ฏ-antisymmetry.
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