Entanglement of dark electron-nuclear spin defects in diamond
Autor: | Aletta Meinsma, Tim H. Taminiau, M. J. Degen, Daniel J. Twitchen, Matthew Markham, S. J. H. Loenen, C. E. Bradley, H. P. Bartling |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Quantum information
Science FOS: Physical sciences General Physics and Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics 02 engineering and technology Quantum entanglement 01 natural sciences General Biochemistry Genetics and Molecular Biology Article Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences 010306 general physics Spin (physics) Quantum Physics Quantum Physics Multidisciplinary Condensed matter physics Spintronics Spins Condensed Matter - Mesoscale and Nanoscale Physics Quantum sensor General Chemistry 021001 nanoscience & nanotechnology 3. Good health Qubit Condensed Matter::Strongly Correlated Electrons Quantum Physics (quant-ph) 0210 nano-technology Qubits |
Zdroj: | Nature Communications Nature Communications, 12(1) Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021) |
ISSN: | 2041-1723 |
Popis: | A promising approach for multi-qubit quantum registers is to use optically addressable spins to control multiple dark electron-spin defects in the environment. While recent experiments have observed signatures of coherent interactions with such dark spins, it is an open challenge to realize the individual control required for quantum information processing. Here, we demonstrate the heralded initialisation, control and entanglement of individual dark spins associated to multiple P1 centers, which are part of a spin bath surrounding a nitrogen-vacancy center in diamond. We realize projective measurements to prepare the multiple degrees of freedom of P1 centers—their Jahn-Teller axis, nuclear spin and charge state—and exploit these to selectively access multiple P1s in the bath. We develop control and single-shot readout of the nuclear and electron spin, and use this to demonstrate an entangled state of two P1 centers. These results provide a proof-of-principle towards using dark electron-nuclear spin defects as qubits for quantum sensing, computation and networks. The use of optically addressable spins to control dark electron-spins is promising for multi-qubit platforms; however, control over darks spins has remained challenging. Here, the authors realize entanglement between individual dark spins associated with substitutional nitrogen defects in diamond. |
Databáze: | OpenAIRE |
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