Input-output theory for spin-photon coupling in Si double quantum dots
- The interaction of qubits via microwave frequency photons enables long-distance qubit-qubit coupling and facilitates the realization of a large-scale quantum processor. However, qubits based on electron spins in semiconductor quantum dots have proven challenging to couple to microwave photons. In this theoretical work we show that a sizable coupling for a single electron spin is possible via spin-charge hybridization using a magnetic field gradient in a silicon double quantum dot. Based on parameters already shown in recent experiments, we predict optimal working points to achieve a coherent spin-photon coupling, an essential ingredient for the generation of long-range entanglement. Furthermore, we employ input-output theory to identify observable signatures of spin-photon coupling in the cavity output field, which may provide guidance to the experimental search for strong coupling in such spin-photon systems and opens the way to cavity-based readout of the spin qubit.
Author: | Mónica BenitoORCiDGND, Xiao Mi, Jacob M. Taylor, Jason R. Petta, Guido Burkard |
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URN: | urn:nbn:de:bvb:384-opus4-1042859 |
Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/104285 |
Parent Title (English): | Physical Review B |
Publisher: | American Physical Society (APS) |
Place of publication: | College Park, MD |
Type: | Article |
Language: | English |
Year of first Publication: | 2017 |
Publishing Institution: | Universität Augsburg |
Release Date: | 2023/05/10 |
Volume: | 96 |
First Page: | 235434 |
DOI: | https://doi.org/10.1103/PhysRevB.96.235434 |
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 |