Improved Hamiltonians for Quantum Simulations of Gauge Theories,Physical Review Letters

当前位置： X-MOL 学术 › Phys. Rev. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Improved Hamiltonians for Quantum Simulations of Gauge Theories
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-07-29 , DOI: 10.1103/physrevlett.129.051601
Marcela Carena _{1,

2,

3,

4} , Henry Lamm ₁ , Ying-Ying Li ₁ , Wanqiang Liu ₄

Affiliation

Quantum simulations of lattice gauge theories for the foreseeable future will be hampered by limited resources. The historical success of improved lattice actions in classical simulations strongly suggests that Hamiltonians with improved discretization errors will reduce quantum resources, i.e., require

≳ 2^{d}

fewer qubits in quantum simulations for lattices with

d

-spatial dimensions. In this work, we consider

O (a^{2})

-improved Hamiltonians for pure gauge theories and design the corresponding quantum circuits for its real-time evolution in terms of primitive gates. An explicit demonstration for