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3-tangle 1ancilla measurements 1concurrence 1entanglement detection 1quantum circuits 1

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1 paper

quant-ph2026

Entanglement Detection for Two-Qubit and Three-Qubit Pure States via Unitary Transformations and Ancilla State Measurements

Yu-Hang Liu, Yuan-Hong Tao, Yi-Wen Liu +2

The paper presents quantum circuit designs that use unitary operations and ancilla qubits to directly measure two-qubit concurrence and three-qubit 3‑tangle, avoiding full state to…