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We study the signatures of disorder in the production of orbital electronentanglement in quantum wires. Disordered entanglers suffer the effects oflocalization of the electron wave function and random fluctuations in theentanglement production. This manifests in the statistics of the concurrence, ameasure of the produced two-qubit entanglement. We calculate the concurrencedistribution as a function of the disorder strength within a random-matrixapproach. We also identify significant constraints on the entanglementproduction as a consequence of the breaking/preservation of time-reversalinvariance. Additionally, our theoretical results are independently supportedby simulations of disordered quantum wires based on a tight-binding model.

Orbital entanglement and electron localization in quantum wires