Cleveland Clinic, RIKEN, and IBM Model a 12,635-Atom Protein - the Largest Known to Be Simulated with Quantum Computers Accessibility Statement Skip Navigation Researchers at IBM, Cleveland Clinic, and RIKEN used quantum-centric supercomputing to model the protein trypsin, a 12,635-atom protein and the largest known to be simulated with quantum computers. (Credit: IBM, Cleveland Clinic, and RIKEN) Researchers at IBM, Cleveland Clinic, and RIKEN have rapidly scaled the size of molecules they can model using ...