Journal Article

FZJ-2022-03733

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Single quantum emitters with spin ground states based on Cl bound excitons in ZnSe

Karasahin, A. (Corresponding author) ; Pettit, R. M. ; von den Driesch, N.FZJ* ; Jansen, M. M.FZJ* ; Pawlis, A.FZJ* ; Waks, E.

2022
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/32083  doi:10.1103/PhysRevA.106.L030402

Abstract: Defects in wide-band-gap semiconductors are promising qubit candidates for quantum communication and computation. Epitaxially grown II-VI semiconductors are particularly promising host materials due to their direct band gap and potential for isotopic purification to a spin-zero nuclear background. Here, we show an alternative type of single photon emitter with potential electron spin qubits based on Cl impurities in ZnSe. We utilize a quantum well to increase the binding energies of donor emission and confirm single photon emission with short radiative lifetimes of 192 ps. Furthermore, we verify that the ground state of the Cl donor complex contains a single electron by observing two-electron-satellite emission, leaving the electron in higher orbital states. We also characterize the Zeeman splitting of the exciton transition by performing polarization-resolved magnetic spectroscopy on single emitters. Our results suggest single Cl impurities are suitable as a single photon source with a potential photonic interface.

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)
2. JARA-FIT (JARA-FIT)

Research Program(s):

1. 5224 - Quantum Networking (POF4-522) (POF4-522)
2. DFG project 337456818 - Entwicklung von Spin-Qubit Bauelementen aus ZnSe/ (337456818)

Appears in the scientific report 2022

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