6 papers · 1 filter
Benchmarking Quantum Simulation of Chemical Hamiltonians using the Sorted-List Encoding
Calvin Ku, Yu-Cheng Chen, Alice Hu +1
Quantum Phase Estimation (QPE) is a cornerstone algorithm for fault-tolerant quantum computation, especially for electronic structure calculations of chemical systems. Optimal simu…
A Neural-Guided Variational Quantum Algorithm for Efficient Sign Structure Learning in Hybrid Architectures
Mengzhen Ren, Yu-Cheng Chen, Yangsen Ye +3
Variational quantum algorithms hold great promise for unlocking the power of near-term quantum processors, yet high measurement costs, barren plateaus, and challenging optimization…
Optimizing Quantum Chemistry Simulations with a Hybrid Quantization Scheme
Calvin Ku, Yu-Cheng Chen, Alice Hu +1
Complex quantum simulation workflows are often hindered by incompatible wavefunction representations adopted across different algorithmic frameworks. In particular, the mismatch be…
Hybrid Quantum-Classical Clustering for Preparing a Prior Distribution of Eigenspectrum
Mengzhen Ren, Yu-Cheng Chen, Ching-Jui Lai +2
Determining the energy gap in a quantum many-body system is critical to understanding its behavior and is important in quantum chemistry and condensed matter physics. The challenge…
Molecular Ground State Simulation by Subspace Restriction and Hund's Rule
Tsung-Chi Chiang, Calvin Ku, Jyh-Pin Chou +3
Simulation of molecular ground states on near-term quantum hardware is constrained by qubit availability and the cost of variational optimization. To address these challenges, the…
Optimal Particle-Conserved Linear Encoding for Practical Fermionic Simulation
M. H. Cheng, Yu-Cheng Chen, Qian Wang +4
Number-conserved subspace encoding reduces resources needed for quantum simulations, but scalable complexity trade-off bounds for modes and particles with $\mathcal{O}(N\lo…