Quantum

Quantum simulation of real-time Yukawa dynamics with qubits and qumodes

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Briefings

A new quantum simulation study uses trapped ions to model real-time Yukawa dynamics in (1+1)-dimensional field theory. The research compares native qubit measurements against lattice perturbation theory, resolving corrections beyond the one-loop self-energy. This approach avoids Euclidean lattice limitations by directly encoding bosonic fields in qumodes.

Key points

• Trapped ions serve as the physical platform where fermions occupy internal states and the scalar field couples via spin-dependent displacement.
• The emulation successfully resolves quantum corrections beyond the Dyson summation of the one-loop self-energy, a capability not achieved by standard lattice perturbation theory.

Context

Quantum simulation of real-time field theories allows access to scattering and decay dynamics, circumventing the limitations of Euclidean lattice methods. This specific study applies the technique to the Yukawa theory to demonstrate native measurement capabilities on trapped ion devices.

Limitations

The study uses a single scalar particle and fermion-antifermion scattering scenario. Results are based on emulation with tensor networks and comparison with lattice perturbation theory, with no experimental data or direct device measurements provided.

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