  Quantum Spin Liquids (QSLs) are phases of interacting spins that do not order
even at the absolute zero temperature, making it impossible to characterize
them by a local order parameter. In this article, we review the unique view
provided by the quantum entanglement on QSLs. We illustrate the crucial role of
Topological Entanglement Entropy in diagnosing the non-local order in QSLs,
using specific examples such as the Chiral Spin Liquid. We also demonstrate the
detection of anyonic quasiparticles and their braiding statistics using quantum
entanglement. In the context of gapless QSLs, we discuss the detection of
emergent fermionic spinons in a bosonic wavefunction, by studying the size
dependence of entanglement entropy.
