Research in quantum fluids, where are we?

In this paper, we present a review of the recent progresses in the field of quantum fluids with a forward-looking perspective. The main research in this field is on superfluid phases of two helium isotopes and can be classified in two realms. One is to use helium as a platform for other related physics. For example, efforts in realizing ultra-high sensitive detection and qubits using superfluid helium-4 have attracted interests of researchers in related fields with potential impact for technology. In parallel a group of researchers continue their effort in unveiling the nature of these unique quantum systems with novel experimental techniques and fresh perspectives. Active investigation of the topological nature and the capability of engineering novel superfluid phases in helium-3 widened the scope of the research in this field. The recent progress in quantitative investigation of quantum turbulence are expected to produce exciting results in the near future. This discussion is based on the works presented at the conferences in the field and the record of publications in recent years [1].

[1] Y. Lee and W.P. Halperin, “Recent Progresses and New Challenges in Quantum Fluids and Solids”, J. Low Temp. Phys. 189, 1-14 (2017).