Ultracoherent operation of spin qubits with superexchange coupling

Rancic, Marko J.; Burkard, Guido

Ultracoherent operation of spin qubits with superexchange coupling

Dateien

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Datum

2017

EU-Projektnummer

676108

Projekt

Spin-NANO

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review B. 2017, 96(20), 201304. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.96.201304

Zusammenfassung

With the use of nuclear-spin-free materials such as silicon and germanium, spin-based quantum bits (qubits) have evolved to become among the most coherent systems for quantum information processing. The new frontier for spin qubits has therefore shifted to the ubiquitous charge noise and spin-orbit interaction, which are limiting the coherence times and gate fidelities of solid-state qubits. In this paper we investigate superexchange, as a means of indirect exchange interaction between two single electron spin qubits, each embedded in a single semiconductor quantum dot (QD), mediated by an intermediate, empty QD. Our results suggest the existence of “supersweet spots”, in which the qubit operations implemented by superexchange interaction are simultaneously first-order-insensitive to charge noise and to errors due to spin-orbit interaction. The proposed spin-qubit architecture is scalable and within the manufacturing capabilities of semiconductor industry.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

RANCIC, Marko J., Guido BURKARD, 2017. Ultracoherent operation of spin qubits with superexchange coupling. In: Physical Review B. 2017, 96(20), 201304. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.96.201304

BibTex

@article{Rancic2017-05-10T11:21:53ZUltra-40849,
  year={2017},
  doi={10.1103/PhysRevB.96.201304},
  title={Ultracoherent operation of spin qubits with superexchange coupling},
  number={20},
  volume={96},
  issn={2469-9950},
  journal={Physical Review B},
  author={Rancic, Marko J. and Burkard, Guido},
  note={Article Number: 201304}
}

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Universitätsbibliographie

Ja