Improving approximate vacuum prepared by the adiabatic quantum computation

• URL: http://arxiv.org/abs/2204.03862v1
• Date: Fri, 8 Apr 2022 06:11:36 GMT
• Title: Improving approximate vacuum prepared by the adiabatic quantum computation
• Authors: Kazuto Oshima
• Abstract summary: According to the quantum adiabatic theorem, we can in principle obtain a true vacuum of a quantum system starting from a trivial vacuum of a simple Hamiltonian. In actual adiabatic digital quantum simulation with finite time length and non-infinitesimal time steps, we can only obtain an approximate vacuum that is supposed to be a superposition of a true vacuum and excited states.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: According to the quantum adiabatic theorem, we can in principle obtain a true vacuum of a quantum system starting from a trivial vacuum of a simple Hamiltonian. In actual adiabatic digital quantum simulation with finite time length and non-infinitesimal time steps, we can only obtain an approximate vacuum that is supposed to be a superposition of a true vacuum and excited states. We propose a procedure to improve the approximate vacuum.

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