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quant-ph2025
Query-Optimal and Sample-Optimal Quantum Algorithms for Estimating Fidelity to a Pure State
Wang Fang, Qisheng Wang
We present two optimal quantum algorithms that estimate the (square root) fidelity of a mixed state to a pure state to within additive error : - Given query access to…
quant-ph2025
Approximation Methods for Simulation and Equivalence Checking of Noisy Quantum Circuits
Mingyu Huang, Ji Guan, Wang Fang +1
In the current NISQ (Noisy Intermediate-Scale Quantum) era, simulating and verifying noisy quantum circuits is crucial but faces challenges such as quantum state explosion and comp…