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## Laughlin anyon complexes with Bose properties

Two-dimensional electron systems in a quantizing magnetic field are regarded as of

exceptional interest, considering the possible role of anyons—quasiparticles with non-boson

and non-fermion statistics—in applied physics. To this day, essentially none but the fractional

states of the quantum Hall effect (FQHE) have been experimentally realized as a system with

anyonic statistics. In determining the thermodynamic properties of anyon matter, it is crucial

to gain insight into the physics of its neutral excitations. We form a macroscopic quasiequilibrium

ensemble of neutral excitations - spin one anyon complexes in the Laughlin state

ν = 1/3, experimentally, where ν is the electron filling factor. The ensemble is found to have

such a long lifetime that it can be considered the new state of anyon matter. The properties of

this state are investigated by optical techniques to reveal its Bose properties.