4 papers
Hardware-efficient quantum simulation of intense-field QED
Zhuoyi Li, Bin Xu, Zhongtian Dong +4
Strong electromagnetic backgrounds make quantum electrodynamics a real-time nonperturbative problem involving dressed fermions and dynamical photons. We propose a trapped-ion proto…
Exponentially improved quantum simulation of scalar QFT
Qing-Hong Cao, Ying-Ying Li, Xiaohui Liu +2
Quantum simulations of scalar quantum field theories (QFT) provide important benchmarks for demonstrating quantum advantage. We revisit digitization in the occupation basis, which…
Block Encodings of Discrete Subgroups on Quantum Computer
Henry Lamm, Ying-Ying Li, Jing Shu +2
We introduce a block encoding method for mapping discrete subgroups to qubits on a quantum computer. This method is applicable to general discrete groups, including crystal-like su…
Quantum error thresholds for gauge-redundant digitizations of lattice field theories
Marcela Carena, Henry Lamm, Ying-Ying Li +1
In the quantum simulation of lattice gauge theories, gauge symmetry can be either fixed or encoded as a redundancy of the Hilbert space. While gauge-fixing reduces the number of qu…