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Digital quantum simulation of fermionic models with a superconducting circuit
- Source :
- Nature Communications
- Publication Year :
- 2015
-
Abstract
- Simulating quantum physics with a device which itself is quantum mechanical, a notion Richard Feynman originated, would be an unparallelled computational resource. However, the universal quantum simulation of fermionic systems is daunting due to their particle statistics, and Feynman left as an open question whether it could be done, because of the need for non-local control. Here, we implement fermionic interactions with digital techniques in a superconducting circuit. Focusing on the Hubbard model, we perform time evolution with constant interactions as well as a dynamic phase transition with up to four fermionic modes encoded in four qubits. The implemented digital approach is universal and allows for the efficient simulation of fermions in arbitrary spatial dimensions. We use in excess of 300 single-qubit and two-qubit gates, and reach global fidelities which are limited by gate errors. This demonstration highlights the feasibility of the digital approach and opens a viable route towards analog-digital quantum simulation of interacting fermions and bosons in large-scale solid state systems.<br />Main text: 5 pages, 5 figures. Supplementary: 7 pages, 6 figures
- Subjects :
- Physics
Quantum network
Quantum Physics
Multidisciplinary
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed Matter - Superconductivity
General Physics and Astronomy
FOS: Physical sciences
General Chemistry
Bioinformatics
General Biochemistry, Genetics and Molecular Biology
Article
Quantum technology
Superconductivity (cond-mat.supr-con)
Open quantum system
Quantum error correction
Quantum process
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Quantum algorithm
Statistical physics
Quantum information
Quantum Physics (quant-ph)
Quantum computer
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....e74aca77c5eb6730435164204ea5858d