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Q: Fachverband Quantenoptik und Photonik

Q 12: Quantum Optics (Miscellaneous) II

Q 12.5: Vortrag

Montag, 14. März 2022, 17:30–17:45, Q-H14

Microwave Stimulated Raman Adiabatic Passage in the Electronic Ground State of the NV Center — •Florian Böhm¹, Niko Nikolay¹, Sascha Neinert¹, Christoph E. Nebel², and Oliver Benson¹ — ¹Institut für Physik IRIS Adlershof, Humboldt-Universität zu Berlin, Germany — ²Nanomaterials Research Institute, Kanazawa University, Japan

The nitrogen-vacancy (NV) center in diamond features an electronic qutrit ground state with long coherence times even at room temperature, which can conveniently be manipulated by microwave pulses and read-out optically [1]. The NV center is well-known for offering a broad range of quantum applications, which stimulates a great interest in developing new, or adapting known control schemes.

Here we present the well-known concept of stimulated Raman transitions [2], which can be used to excite transitions between two states not directly coupled to a radiation field, applied to the NV center’s triplet ground state. Depending on the two-photon microwave pulse sequence, either stimulated Raman transitions (SRT) or stimulated Raman adiabatic passage (STIRAP) could successfully be implemented in the NV center [3]. We show, that both schemes can successfully drive the dipole-forbidden m_s=−1↔ m_s=+1 transition. Furthermore we compare both mechanisms on their robustness and success of spin-swap, as well as their experimental challenges.

[1] Doherty, Marcus, et al., Physics Reports 528.1 (2013): 1-45

[2] Sola, Ignacio, et al., Adv. Mol. Opt. Phys., 67 (2018): 151-256.

[3] Böhm, Florian, et al., Phys. Rev. B, 104.3 (2021): 035201