This title appears in the Scientific Report :
2018
Please use the identifier:
http://hdl.handle.net/2128/20337 in citations.
Superconducting flux qubits compared to ideal two-level systems as building blocks for quantum annealers
Superconducting flux qubits compared to ideal two-level systems as building blocks for quantum annealers
Quantum annealers provide a promising approach for solving optimization problems.The theory of quantum annealing is fundamentally different from gate-based quantum computing: In quantum annealing, the system is prepared in a known ground state of an initial Hamiltonian, then this Hamiltonian is adia...
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Personal Name(s): | Willsch, Madita (Corresponding author) |
---|---|
Willsch, Dennis / Jin, Fengping / De Raedt, Hans / Michielsen, Kristel | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Imprint: |
2018
|
Conference: | Bad Honnef Physics School on Quantum Technologies, Bad Honnef (Germany), 2018-08-05 - 2018-08-10 |
Document Type: |
Poster |
Research Program: |
Doktorand ohne besondere Förderung Computational Science and Mathematical Methods |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Quantum annealers provide a promising approach for solving optimization problems.The theory of quantum annealing is fundamentally different from gate-based quantum computing: In quantum annealing, 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 the given problem.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 on superconducting flux qubits is investigated and compared to the ideal two-level system. |