Observation of period doubling and higher multiplicities in a driven single-spin system
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866916861655908352 |
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| author | Deshmukh, Dhruv González, Raúl B. Sailer, Roberto Jelezko, Fedor Said, Ressa S. Ankerhold, Joachim |
| author_facet | Deshmukh, Dhruv González, Raúl B. Sailer, Roberto Jelezko, Fedor Said, Ressa S. Ankerhold, Joachim |
| contents | One of the prime features of quantum systems strongly driven by external time-periodic fields is the subharmonic response with integer multiples of the drive period $k\, T_d$. Here we demonstrate experimentally based on a careful theoretical analysis period doubling and higher multiplicities ($k=2,\ldots 5$) for one of the most fundamental systems, namely, an individual spin-$1/2$. Realized as a nitrogen vacancy center in diamond, the particular coherence properties under ambient conditions, strong field sensitivity, and optical addressability allow to monitor coherent $k$-tupling oscillations over a broad set of driving parameters in the vicinity of the ideal manifolds. We verify an enhanced sensitivity within this domain which provides new means for improved sensing protocols. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_18387 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observation of period doubling and higher multiplicities in a driven single-spin system Deshmukh, Dhruv González, Raúl B. Sailer, Roberto Jelezko, Fedor Said, Ressa S. Ankerhold, Joachim Quantum Physics Mesoscale and Nanoscale Physics One of the prime features of quantum systems strongly driven by external time-periodic fields is the subharmonic response with integer multiples of the drive period $k\, T_d$. Here we demonstrate experimentally based on a careful theoretical analysis period doubling and higher multiplicities ($k=2,\ldots 5$) for one of the most fundamental systems, namely, an individual spin-$1/2$. Realized as a nitrogen vacancy center in diamond, the particular coherence properties under ambient conditions, strong field sensitivity, and optical addressability allow to monitor coherent $k$-tupling oscillations over a broad set of driving parameters in the vicinity of the ideal manifolds. We verify an enhanced sensitivity within this domain which provides new means for improved sensing protocols. |
| title | Observation of period doubling and higher multiplicities in a driven single-spin system |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2507.18387 |