RQC Seminar

102nd RQC Seminar

• Speaker

  Dr. Emanuele Mendicelli
  ( Department of Physics and Astronomy, York University, Canada )

• Date

  16:00-17:00, December 15, 2023 (Friday)

• Venue

  Hybrid(ZOOM・ Wako Main Research 3F 345-347 Seminar Room C01）

• Title

  Two attempts to study a SU(2) pure gauge lattice theory on two quantum hardware.

• Inquiries

  rqc_info[at]ml.riken.jp

Abstract
Quantum computers have the potential to expand the utility of lattice gauge theory to investigate non-perturbative particle physics phenomena that cannot be accessed using a standard Monte Carlo method due to the sign problem. Thanks to the qubit, quantum computers can store Hilbert space in a more efficient way compared to classical computers. This allows the Hamiltonian approach to be computationally feasible, leading to absolute freedom from the sign-problem. But what the current noisy intermediate scale quantum hardware (NISQ) can achieve is under investigation. Therefore, in this talk we briefly report the use of D-Wave quantum annealer and the IBM gate-based quantum hardware to study the energy spectrum and the time evolution of a SU(2) pure gauge lattice theory in its Hamiltonian formulation. Since the NISQ hardware are still noisy and with few resources we rationed them by block diagonalizing the Hamiltonian and for the gate-based hardware by combining gates together to minimizing the circuit length. The error of the gate-based hardware was reduced by using various simple error mitigation techniques, like mitigation of measurement error, randomized compiling, zero noise extrapolation and our novel technique called Self-mitigation.