%0 Conference Paper
%A Nocon, Madita
%A Willsch, Dennis
%A Jin, Fengping
%A De Raedt, Hans
%A Michielsen, Kristel
%T Superconducting flux qubits compared to ideal two-level systems as building blocks for quantum annealers
%M FZJ-2018-01746
%D 2018
%X For quantum computers, two theoretical models are nowadays considered to be the most important: the gate-based quantum computer and the quantum annealer.Gate-based quantum computers are based on computational gates just like classical computers, but have potentially more computational power due to the algebra behind quantum theory. A quantum annealer works fundamentally different: First the system is prepared in a known ground state of an initial Hamiltonian, then this Hamiltonian is adiabatically transformed into the final Hamiltonian whose ground state corresponds to the solution of a given problem, usually taken from the class of optimization problems.Quantum annealing works well in theory if the qubits can be modeled as two-level systems. However, in real devices, the qubits are not based on perfect two-level systems, but on a two-dimensional subspace of a larger system. This makes approximations in analytic calculations unavoidable.With a simulation utilizing the Suzuki-Trotter product-formula approach to solve the time-dependent Schrödinger equation, the time-evolution of the full state of such a device based onsuperconducting flux qubits is investigated.
%B NIC Symposium 2018
%C 22 Feb 2018 - 23 Feb 2018, Jülich (Germany)
Y2 22 Feb 2018 - 23 Feb 2018
M2 Jülich, Germany
%F PUB:(DE-HGF)24
%9 Poster
%U https://juser.fz-juelich.de/record/844313