Quantum algorithm estimates fidelity of commuting mixed states using density matrix exponentiation and interferometry with time complexity O(κ²N²/ε⁷).
Implementation of swap test for two unknown states in photons via cross-kerr nonlineari- ties under decoherence effect.Scientific Reports, 9:6167, April 2019
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Efficient algorithm for fidelity estimation of two quantum states
Quantum algorithm estimates fidelity of commuting mixed states using density matrix exponentiation and interferometry with time complexity O(κ²N²/ε⁷).