3 papers
quant-ph2025
Space-time tradeoff for sparse quantum state preparation
Jingquan Luo, Guanzhong Li, Lvzhou Li
In this work, we investigate the trade-off between the circuit depth and the number of ancillary qubits for preparing sparse quantum states. We prove that any -qubit -spare q…
quant-ph2025
Quantum phase discrimination with applications to quantum search on graphs
Guanzhong Li, Lvzhou Li, Jingquan Luo
We study the phase discrimination problem, in which we want to decide whether the eigenphase of a given eigenstate with eigenvalue is zero or not,…
quant-ph2024
Tolerant Quantum Junta Testing
Zhaoyang Chen, Lvzhou Li, Jingquan Luo
Junta testing for Boolean functions has sparked a long line of work over recent decades in theoretical computer science, and recently has also been studied for unitary operators in…