Student Posters Repository

The constituents of a quantum many-body system can be inextricably linked, a phenomenon known as quantum entanglement. Entanglement can be used as a resource for quantum computing and detecting phase transitions. It can be quantified via the von Neumann and Rényi entropies. Particle number superselection rules restrict the amount of entanglement that can be accessed as a resource. In this work, the accessible entanglement between spatial subregions of a 1D lattice of spinless fermions is quantified. Exact diagonalization results confirm the feasibility of the accessible entanglement entropy as a probe to detect quantum phase transitions.