{"id":6827,"date":"2026-07-03T11:02:50","date_gmt":"2026-07-03T06:02:50","guid":{"rendered":"https:\/\/cifrum.kz\/ibm-heron-hadronization-string-breaking-104-qubits\/"},"modified":"2026-07-03T11:02:50","modified_gmt":"2026-07-03T06:02:50","slug":"ibm-heron-hadronization-string-breaking-104-qubits","status":"publish","type":"post","link":"https:\/\/cifrum.kz\/en\/ibm-heron-hadronization-string-breaking-104-qubits\/","title":{"rendered":"IBM quantum computer models a key step in hadronization using 104 qubits"},"content":{"rendered":"\n

Oak Ridge, United States.<\/strong> Lawrence Berkeley National Laboratory researcher Anthony Ciavarella used 104 qubits of an IBM Heron processor to model color-string breaking, a key mechanism in hadronization. In this process, energy stored by the strong interaction becomes new quark-antiquark pairs that form bound particles.<\/p>\n\n\n\n

The Oak Ridge Leadership Computing Facility<\/a> highlighted the result on 30 June. The peer-reviewed study itself was published in Physical Review D in 2025<\/a>. This distinction matters: the recent item is a new account of the project, not a scientific paper first published on 1 July 2026.<\/p>\n\n\n\n

The demonstration is not a complete simulation of hadronization in quantum chromodynamics and does not establish quantum advantage over supercomputers. Ciavarella used a simplified theory and compared the output with a calculation accessible to classical methods. The value lies in testing a scalable way to prepare and evolve a quantum field on present-day noisy hardware.<\/p>\n\n\n\n

Hadronization: why quarks are not seen alone<\/h2>\n\n\n\n

Quarks and gluons carry color charge and obey the strong interaction. Unlike the electric force, the link between quarks does not simply weaken as their separation grows. A narrow region of color field forms between receding particles and can be pictured as a stretched string.<\/p>\n\n\n\n

When enough energy accumulates in that string, creating a new quark-antiquark pair becomes more favorable than stretching it further. The new particles connect to the original ends, turning one long string into two bound systems. In real collisions, a cascade of such events produces many hadrons.<\/p>\n\n\n\n

Protons and neutrons are hadrons, but Ciavarella\u2019s experiment did not model their complete formation. The theory tracked meson-like states made from a quark and an antiquark. CERN describes hadronization<\/a> as the transition of quarks and gluons, collectively called partons, into bound hadrons because of confinement.<\/p>\n\n\n\n

What actually ran on IBM Heron<\/h2>\n\n\n\n

Access to the quantum computer came through Oak Ridge\u2019s Quantum Computing User Program<\/a>. Using IBM\u2019s cloud platform, Ciavarella employed 104 qubits on a Heron processor identified in the study as ibm_torino.<\/p>\n\n\n\n

The circuit first prepared a quantum vacuum and a state containing one quark-antiquark pair. It then evolved the system in time while measurements tracked inelastic production of additional pairs and changes in the number of meson-like states.<\/p>\n\n\n\n

The large run used a lattice of 104 staggered sites, up to ten Trotter steps, 8,944 two-qubit CNOT operations and a maximum CNOT depth of 172. Trotterization replaces continuous evolution under a complicated Hamiltonian with a sequence of smaller operations executable by a digital quantum processor.<\/p>\n\n\n\n

Three simplifications made the calculation possible<\/h2>\n\n\n\n