Spectrally Stable Defect Qubits with no Inversion Symmetry for Robust Spin-To-Photon Interface

Udvarhelyi P, Nagy R, Kaiser F, Lee SY, Wrachtrup J, Gali A (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Physical Review Applied American Physical Society

Book Volume: 11

Article Number: 044022

Journal Issue: 4

DOI: 10.1103/PhysRevApplied.11.044022

Abstract

Scalable spin-to-photon interfaces require quantum emitters with strong optical-transition dipole moment and low coupling to phonons and stray electric fields. It is known that particularly for coupling to stray electric fields, these conditions can be simultaneously satisfied for emitters that show inversion symmetry. Here, we show that inversion symmetry is not a prerequisite criterion for a spectrally stable quantum emitter. We find that identical electron density in ground and excited states can eliminate the coupling to the stray electric fields. Further, a strong optical-transition dipole moment is achieved in systems with altering sign of the ground and excited wave functions. We use density-functional perturbation theory to investigate an optical center that lacks inversion symmetry. Our results show that this system close to ideally satisfies the criteria for an ideal quantum emitter. Our study opens an additional rationale in seeking promising materials and point defects towards the realization of robust spin-to-photon interfaces.

Authors with CRIS profile

Roland Nagy

Additional Organisation(s)

Lehrstuhl für Elektronische Bauelemente

Involved external institutions

Universität Stuttgart DE Germany (DE) Eötvös Loránd University / Eötvös Loránd Tudományegyetem (ELTE) HU Hungary (HU) Hungarian Academy of Sciences / Magyar Tudományos Akadémia (MTA) HU Hungary (HU) Korea Institute of Science and Technology (KIST) / 한국과학기술연구원 KR Korea, Republic of (KR)

How to cite

APA:

Udvarhelyi, P., Nagy, R., Kaiser, F., Lee, S.-Y., Wrachtrup, J., & Gali, A. (2019). Spectrally Stable Defect Qubits with no Inversion Symmetry for Robust Spin-To-Photon Interface. Physical Review Applied, 11(4). https://doi.org/10.1103/PhysRevApplied.11.044022

MLA:

Udvarhelyi, Peter, et al. "Spectrally Stable Defect Qubits with no Inversion Symmetry for Robust Spin-To-Photon Interface." Physical Review Applied 11.4 (2019).

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