Quantum simulations of hadron dynamics in the Schwinger model using 112 qubits

Hadron wave packets are prepared and time evolved in the Schwinger model using 112 qubits of IBM's 133-qubit Heron quantum computer ibm_torino. The initialization of the hadron wave packet is performed in two steps. First, the vacuum is prepared across the whole lattice using the recently developed SC-ADAPT-VQE algorithm and workflow. SC-ADAPT-VQE is then extended to the preparation of localized states, and used to establish a hadron wave packet on top of the vacuum. This is done by adaptively constructing low-depth circuits that maximize the overlap with an adiabatically prepared hadron wave packet. Due to the localized nature of the wavepacket, these circuits can be determined on a sequence of small lattices…

• UD
  U.S. Department of Energy

  Awards: KA2401032, -AC02-05CH11231, DE-FG02-97ER-41014, AC05-00OR22725, 05CH11231, AC02-05CH11231, DE-SC0020970, DE-AC02, DE-FG02-, DE-AC02-05CH11231, DE-AC05, DE-FG02, 00OR22725, DE-AC02-
• N
  Nvidia
• UO
  University of Washington
• OO
  Office of Science

  Awards: DE-AC05-00OR22725, DE-SC0020970, AC02-05CH11231, -AC02-05CH11231, DE-AC02, KA2401032, DE-FG02-97ER-41014, AC05-00OR22725
• HE
  High Energy Physics

  Awards: KA2401032, DE-AC05-00OR22725, DE-AC02-05CH11231
• NP
  Nuclear Physics

  Awards: DE-FG02-97ER-41014, DE-AC05-00OR22725, DE-SC0020970, DE-AC02-05CH11231