Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

QI: Fachverband Quanteninformation

QI 28: Spin Qubits

QI 28.7: Vortrag

Donnerstag, 9. März 2023, 12:45–13:00, F428

Manipulating electron spin entanglement with a scanning tunnelling microscope — •Carsten Henkel1 and Baruch Horovitz21Universität Potsdam, Institut für Physik und Astronomie — 2Ben Gurion University of the Negev, Department of Physics, Beer Sheva, Israel

The tunnel current of a scanning microscope contains, in its fluctuations, information about localised spin sites in the contact region. In a magnetic field, this provides an alternative take on electron spin resonance spectroscopy. We showed previously that the features of the current spectrum can be explained by two localised spins that provide interfering tunnelling pathways [1]. The two spins experience effective exchange and Dzyaloshinskii-Moriya couplings and decay channels when the electronic contacts are integrated out [2]. Observed spin spectra can be fitted to the results of a master equation [3]. We report on voltage quenches and current measurements that manipulate the two-spin state and analyse its entanglement [2].

[1] B. Horovitz and A. Golub, Phys. Rev. B 99 (2019) 241407(R)

[2] B. Horovitz and C. Henkel, Phys. Rev. B (Lett.) 104 (2021) L081405

[3] Y. Manassen, M. Jbara, M. Averbukh, Z. Hazan, C. Henkel, and B. Horovitz, Phys. Rev. B 105 (2022) 235438

100% | Bildschirmansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2023 > SAMOP