TY  - CONF
AU  - Nocon, Madita
AU  - Willsch, Dennis
AU  - Jin, Fengping
AU  - De Raedt, Hans
AU  - Michielsen, Kristel
TI  - Superconducting flux qubits compared to ideal two-level systems as building blocks for quantum annealers
M1  - FZJ-2018-01746
PY  - 2018
AB  - 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.
T2  - NIC Symposium 2018
CY  - 22 Feb 2018 - 23 Feb 2018, Jülich (Germany)
Y2  - 22 Feb 2018 - 23 Feb 2018
M2  - Jülich, Germany
LB  - PUB:(DE-HGF)24
UR  - https://juser.fz-juelich.de/record/844313
ER  -