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Symmetry-protected adiabatic quantum transistors
- Autor(en)
- Dominic J. Williamson, Stephen D. Bartlett
- Abstrakt
Adiabatic quantum transistors (AQT) allow quantum logic gates to be performed by applying a large field to a quantum many-body system prepared in its ground state, without the need for local control. The basic operation of such a device can be viewed as driving a spin chain from a symmetry-protected (SP) phase to a trivial phase. This perspective offers an avenue to generalize theAQTand to design several improvements. The performance of quantum logic gates is shown to depend only on universal symmetry properties of a SP phase rather than any fine tuning of the Hamiltonian, and it is possible to implement a universal set of logic gates in this way by combining several different types of SP matter. Such SP AQTs are argued to be robust to a range of relevant noise processes.
- Organisation(en)
- Quantenoptik, Quantennanophysik und Quanteninformation
- Externe Organisation(en)
- The University of Sydney
- Journal
- New Journal of Physics
- Band
- 17
- Anzahl der Seiten
- 24
- ISSN
- 1367-2630
- DOI
- https://doi.org/10.1088/1367-2630/17/5/053019
- Publikationsdatum
- 05-2015
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103024 Quantenfeldtheorie, 103025 Quantenmechanik
- Schlagwörter
- ASJC Scopus Sachgebiete
- Allgemeine Physik und Astronomie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/6192bb3a-a01d-4860-82e7-427184b88418