91 citations · 101 across the 17 of their papers we have counts for
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Sample-based Quantum Diagonalization via Density Matrix Renormalization Group
Yuto Sugimoto, Tomonori Shirakawa, Yukio Kawashima +2
We introduce SqDMRG, which combines sample-based quantum diagonalization (SQD) with the density matrix renormalization group (DMRG). SqDMRG expands the sampled determinant space in…
Broken-Symmetry Reference States for Sample-Based Quantum Diagonalization with Near-DMRG Accuracy
Kunal Kumar, Tomonori Shirakawa, Boseong Kim +7
Sample-based quantum diagonalization (SQD) accuracy remains limited for strongly correlated systems like iron-sulfur clusters. This accuracy heavily depends on the mean-field refer…
Resolving Structure in Prethermal Floquet Dynamics with Precision Quantum Computation
Eyal Leviatan, Tasneem Watad, Roy Perry +38
Periodically driven interacting quantum many-body systems can exhibit long-lived prethermal dynamics, where local observables retain coherent structure even as entanglement and ope…
Filter-assisted quantum subspace diagonalization via wavefunction sparsity engineering
Han Xu, Tomonori Shirakawa, Seiji Yunoki
Subspace diagonalization techniques based on quantum sampling, such as quantum selected configuration interaction (QSCI) and sample-based quantum diagonalization (SQD), have recent…
Noise and Configuration Recovery Impact on Quantum Selected Configuration Interaction
Nonia Vaquero-Sabater, Abel Carreras, Lukas Broers +3
Quantum-selected configuration interaction (QSCI) is a promising hybrid quantum-classical approach in which a quantum device generates configurations for subsequent classical diago…
High-Precision Variational Quantum SVD via Classical Orthogonality Correction
Shohei Miyakoshi, Takanori Sugimoto, Tomonori Shirakawa +2
Evaluating the entanglement spectrum is essential for characterizing exotic quantum phases such as quantum criticality and topological order. However, for large quantum many-body s…
Crossing the 12,000-atom barrier with heterogeneous quantum-classical supercomputing: quantum chemistry of protein-ligand complexes
Kenneth M. Merz, Akhil Shajan, Danil Kaliakin +21
We develop a workflow decomposing a molecule into fragments via quantum embedding and simulating them with a heterogeneous quantum-classical (HQC) method. We sample fragment electr…
Phase transitions in parametrized quantum circuits
Xiaoyang Wang, Han Xu, Lukas Broers +2
Phase transitions are among the most intriguing phenomena in physical systems, yet their behavior near criticality remain challenging to study using classical algorithms. Parameter…
Probing many-body localization crossover in quasiperiodic Floquet circuits on a quantum processor
Kazuma Nagao, Tomonori Shirakawa, Rongyang Sun +2
Many-body localization (MBL) provides a mechanism by which interacting quantum systems evade thermalization, leading to persistent memory of initial conditions and slow entanglemen…
Observation of Improved Accuracy over Classical Sparse Ground-State Solvers using a Quantum Computer
William Kirby, Bibek Pokharel, Javier Robledo Moreno +25
Demonstrating quantum advantage over classical algorithms for ground state energy problems is an outstanding open problem in quantum computation. We experimentally demonstrate that…
GPU-Accelerated Selected Basis Diagonalization with Thrust for SQD-based Algorithms
Jun Doi, Tomonori Shirakawa, Yukio Kawashima +2
Selected Basis Diagonalization (SBD) plays a central role in Sample-based Quantum Diagonalization (SQD), where iterative diagonalization of the Hamiltonian in selected configuratio…
Extending the Handover-Iterative VQE to Challenging Strongly Correlated Systems: and Fe-S Cluster
Pilsun Yoo, Kyungmin Kim, Eyuel E. Elala +10
Accurately describing strongly correlated electronic systems remains a central challenge in quantum chemistry, as electron-electron interactions give rise to complex many-body wave…