Project detail

Electric-field control of spin-qubits in quantum paraelectrics

Duration: 01.01.2023 — 31.12.2025

Funding resources

Czech Science Foundation - Standardní projekty

- whole funder

On the project

Manipulating electron spins by applying electric instead of magnetic fields is faster, more energy efficient and spatially confined, making the investigation one of the most active research fields in solid-state physics and materials science. We propose a unique approach to this topic by exploiting the unique dielectric properties of quantum paraelectrics KTaO3 and SrTiO3 doped with S-state paramagnetic ions. Due to high lattice polarizability (permittivity up to 25000), a significant (up to two orders of magnitude) amplification of coupling of electron spins with electric field is anticipated for these ions. Particular attention will be given to electric dipole centers, where a strong interplay between spins and electric dipoles is expected. Using advanced magnetic resonance techniques at frequencies up to 1 THz, we also intend to shed light on the promising applications of these materials in quantum information processing, as a media for hosting spin-qubits that can be substantially more energy efficiently and coherently controlled by electric fields.

Keywords
spin-electric control;quantum paraelectrics;electron paramagnetic resonance;spin coherence; spintronics;spin-qubits;quantum information processing

Mark

23-05578S

Default language

English

People responsible

Neugebauer Petr, doc. Dr. Ing., Ph.D. - principal person responsible

Units

Magneto-Optical and THz Spectroscopy
- beneficiary (2022-03-22 - not assigned)

Results

SOLODOVNYK, A.; LAGUTA, O.; PROKHOROV, A.; SEGANTINI, M.; NAYDENOV, B.; NEUGEBAUER, P.; GREULICH-WEBER, E.; KALABUKHOVA, E.; SAVCHENKO D. Spin dynamics of exchange-coupled nitrogen donors in heavily doped n-type 15R SiC monocrystals: Multifrequency EPR and EDMR study. PHYSICAL REVIEW B, 2023, vol. 107, no. 155202, ISSN: 2469-9969.
Detail

DUBNICKÁ MIDLÍKOVÁ, J.; ŠEDIVÝ, M.; SOJKA, A.; TADEU SANTANA, V.; DUBROKA, A.; NEUGEBAUER, P. A Versatile Setup for Fourier-Transform Infrared Magneto-Spectroscopy. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2023, vol. 72, no. 1, p. 1-11. ISSN: 1557-9662.
Detail

Panchenko, TV.; Trubitsyn, MP.; Laguta, V.; Sidak, VM.; Volnianskii, MD.; Osetsky, AY.; Laguta, O. Optical and EPR spectroscopy of manganese doped LiNaGe4O9 single crystals. OPTICAL MATERIALS, 2024, vol. 154, no. 115793, ISSN: 0925-3467.
Detail

LAGUTA, O.; NEUGEBAUER, P.; ZDEG, I.; LAGUTA, V. Structural instability and lattice site occupation of Mn2+ ions in the SrTiO3 quantum paraelectric. PHYSICAL REVIEW B, 2024, vol. 110, no. 2, ISSN: 2469-9950.
Detail

Laguta, V.; Bovtun, V.; Kempa, M.; Laguta, O.; Neugebauer, P.; Simenas, M.; Banys, J.; Kamba, S. Enhancement of microwave fields in pulse EPR of quantum paraelectrics. Applied Physics Letters, 2023, vol. 123, no. 21, ISSN: 1077-3118.
Detail

Responsibility: Neugebauer Petr, doc. Dr. Ing., Ph.D.