Blueprint for quantum computing using electrons on helium
- We present a blueprint for building a fault-tolerant quantum computer using the spin states of electrons on the surface of liquid helium. We propose to use ferromagnetic micropillars to trap single electrons on top of them and to generate a local magnetic field gradient. Introducing a local magnetic field gradient hybridizes charge and spin degrees of freedom, which allows us to benefit from both the long coherence time of the spin state and the long-range Coulomb interaction that affects the charge state. We present concrete schemes to realize single- and two-qubit gates and quantum nondemolition readout. In our framework, the hybridization of charge and spin degrees of freedom is large enough to perform fast qubit gates and small enough not to degrade the coherence time of the spin state significantly, which leads to the realization of high-fidelity qubit gates.
| Author: | Erika Kawakami, Jiabao Chen, Monica BenitoORCiDGND, Denis Konstantinov |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-1043072 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/104307 |
| ISSN: | 2331-7019OPAC |
| Parent Title (English): | Physical Review Applied |
| Publisher: | American Physical Society |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2023 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2023/05/11 |
| Volume: | 20 |
| Issue: | 5 |
| First Page: | 054022 |
| DOI: | https://doi.org/10.1103/PhysRevApplied.20.054022 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Professur für Quantencomputing und Quantengeräte | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  Deutsches Urheberrecht |
