Point Reyes Sound — Quantum Boltzmann Solver

We develop accelerated quantum chemistry solvers for advanced materials simulation and future quantum computers.

Continuous phase-space kinetics for strongly correlated electrons and entropic regularization of mean-field singularities via Quantum Boltzmann Equation Self-Consistent-Field (QBE-SCF).

Point Reyes Sound is excited to join Alchemist Chicago’s final selection stage in Chicago, October 19–23, as one of 30 companies selected for the program. Read institutional announcement → • Read UChicago Polsky Center press release →

About Point Reyes Sound — Discovery Without Deference

Point Reyes Sound develops accelerated quantum chemistry solvers for advanced materials simulation and future quantum computers. We pioneer continuous kinetic transport methods for strongly correlated electrons, replacing combinatorial configuration interaction (CI) bottlenecks with polynomial O(N³) computational scaling.

Core Scientific Pillars

01 Non-Equilibrium Kinetic Theory: Propagating reduced density matrices with BGK collision operators, replacing combinatorial CI scaling with polynomial O(N³) computational scaling.
02 Open Scientific Benchmarking: Open reproducibility across reference transition-metal dimers, radical singlet-triplet gaps, and multi-reference bond dissociations.

Research Themes & Commercial Applications

Semiconductor EDA & Wide-Bandgap Materials: Kinetic carrier transport and electron-phonon scattering simulation for GaN, SiC, and topological insulators.
Solid-State Battery Electrolytes & Clean Energy: Simulating open-shell radical stability and non-equilibrium charge transfer at cathode-electrolyte interphases.
Industrial Catalysis & Active Sites: Resolving multi-metallic transition complexes and nitrogenase active sites without factorial active-space blowup.
Fault-Tolerant Quantum Algorithm Compilation (FTQC): 1,747× reduction in Toffoli gate complexity for active-space driven quantum simulations on Cr₂.

Featured Research & Preprints

Quantum Boltzmann Equation Self-Consistent-Field for the Entropic Regularization of Mean-Field Singularities

Author: Dr. Romit Chakraborty | DOI: 10.48550/arXiv.2608.14979 | Preprint: arXiv:2608.14979

Smart Citations Index: scite.ai/reports/10.48550/arXiv.2608.14979

Quantum Boltzmann Equation Benchmark & QBE-SCF Benchmark (Zenodo Dataset)

Open Benchmark Dataset & Reproduction Suite: Permanent Zenodo Archive: DOI: 10.5281/zenodo.21940451 | Open-Access GitHub Reproduction Suite: point-reyes-sound/p1_qbescf.

QBE-SCF vs Conventional Quantum Chemistry Solvers

Conventional multireference solvers (CASSCF, DMRG, and Full Configuration Interaction / FCI) suffer from factorial combinatorial active-space explosion (O(e^N)) and catastrophic numerical divergences at mean-field singularity points. Point Reyes Sound's Quantum Boltzmann Equation Self-Consistent Field (QBE-SCF) replaces static Hamiltonian diagonalization with continuous kinetic relaxation of the one-electron reduced density matrix (1-RDM), delivering polynomial O(N³) computational scaling across multireference systems.

Validated Benchmark Suites in the Zenodo Dataset:

Symmetric H₃ Linear Dissociation: Resolves the Coulson-Fischer singular crossing and restores the Generalized Valence Bond (GVB) limit via zero-temperature kinetic ergodicity.
BeH₂ Conical Intersection: Continuous traversal of the C₂ᵥ → D_∞h avoided crossing, reconstructing correlated adiabatic energy surfaces without multi-reference wavefunctions.
H₄ Structural Automerization Distortion (D₂ₕ → D₄ₕ → D₂ₕ): Regularizes static correlation catastrophes and multireference degenerate seams with smooth C¹ gradient continuity.
Dinitrogen (N₂) Triple-Bond Dissociation: Smoothly dissociates the strongest homonuclear triple bond across STO-3G, 6-31G, and cc-pVTZ basis sets while strictly preserving the Hartree-Fock condition [F, P] = 0.

Founding Leadership & Institutional Support

Founder & Chief Scientific Officer: Dr. Romit Chakraborty (Academic Dossier | Curriculum Vitae | Ph.D. University of Chicago, Postdoc UC Berkeley / LBNL, former PsiQuantum Senior Computational Scientist).

Backed by NVIDIA Inception Program, Google Cloud Research Grants, USISTEF Quantum Materials Foundry, and selected for Alchemist Chicago Cohort 2 (University of Chicago Polsky Center / Duality Accelerator).