Exciton-polariton condensates in zero-, one-, and two-dimensional lattices

TL;DR

This paper explores the behavior of exciton-polariton condensates in various lattice geometries, revealing complex quantum states and potential for quantum simulation applications.

Contribution

It reports the experimental observation of high-orbital condensates, including p-wave and d-orbital states, in zero-, one-, and two-dimensional lattices.

Findings

Observation of coherent π-state with p-wave order in 1D condensates

Detection of d-orbital states in 2D square lattices

Potential for probing dynamical quantum phase transitions

Abstract

Microcavity exciton-polaritons are quantum quasi-particles arising from the strong light-matter coupling. They have exhibited rich quantum dynamics rooted from bosonic nature and inherent non-equilibrium condition. Dynamical condensation in microcavity exciton-polaritons has been observed at much elevated temperatures in comparison to ultrocold atom condensates. Recently, we have investigated the behavior of exciton-polariton condensates in artificial trap and lattice geometries in zero-dimension, one-dimension (1D) and two-dimension (2D). Coherent $\pi$-state with p-wave order in a 1D condensate array and d-orbital state in a 2D square lattice are observed. We anticipate that the preparation of high-orbital condensates can be further extended to probe dynamical quantum phase transition in a controlled manner as quantum emulation applications.