Optical single-shot readout of spin qubits in silicon
Abstract Small registers of spin qubits in silicon can exhibit hour-long coherence times and exceeded error-correction thresholds. However, their connection to larger quantum processors is an outstanding challenge. To this end, spin qubits with optical interfaces offer key advantages: they can minim...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55552-9 |
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| _version_ | 1841559214047100928 |
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| author | Andreas Gritsch Alexander Ulanowski Jakob Pforr Andreas Reiserer |
| author_facet | Andreas Gritsch Alexander Ulanowski Jakob Pforr Andreas Reiserer |
| author_sort | Andreas Gritsch |
| collection | DOAJ |
| description | Abstract Small registers of spin qubits in silicon can exhibit hour-long coherence times and exceeded error-correction thresholds. However, their connection to larger quantum processors is an outstanding challenge. To this end, spin qubits with optical interfaces offer key advantages: they can minimize the heat load and give access to modular quantum computing architectures that eliminate cross-talk and offer a large connectivity. Here, we implement such an efficient spin-photon interface based on erbium dopants in a nanophotonic resonator. We demonstrate optical single-shot readout of a spin in silicon whose coherence exceeds the Purcell-enhanced optical lifetime, paving the way for entangling remote spins via photon interference. As erbium dopants can emit coherent photons in the minimal-loss band of optical fibers, and tens of such qubits can be spectrally multiplexed in each resonator, the demonstrated hardware platform offers unique promise for distributed quantum information processing based on scalable, integrated silicon devices. |
| format | Article |
| id | doaj-art-63c4d70852384cf7bd9e762fa159615b |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-63c4d70852384cf7bd9e762fa159615b2025-01-05T12:40:57ZengNature PortfolioNature Communications2041-17232025-01-011611710.1038/s41467-024-55552-9Optical single-shot readout of spin qubits in siliconAndreas Gritsch0Alexander Ulanowski1Jakob Pforr2Andreas Reiserer3TUM School of Natural Sciences, Department of Physics and Munich Center for Quantum Science and Technology (MCQST), Technical University of MunichTUM School of Natural Sciences, Department of Physics and Munich Center for Quantum Science and Technology (MCQST), Technical University of MunichTUM School of Natural Sciences, Department of Physics and Munich Center for Quantum Science and Technology (MCQST), Technical University of MunichTUM School of Natural Sciences, Department of Physics and Munich Center for Quantum Science and Technology (MCQST), Technical University of MunichAbstract Small registers of spin qubits in silicon can exhibit hour-long coherence times and exceeded error-correction thresholds. However, their connection to larger quantum processors is an outstanding challenge. To this end, spin qubits with optical interfaces offer key advantages: they can minimize the heat load and give access to modular quantum computing architectures that eliminate cross-talk and offer a large connectivity. Here, we implement such an efficient spin-photon interface based on erbium dopants in a nanophotonic resonator. We demonstrate optical single-shot readout of a spin in silicon whose coherence exceeds the Purcell-enhanced optical lifetime, paving the way for entangling remote spins via photon interference. As erbium dopants can emit coherent photons in the minimal-loss band of optical fibers, and tens of such qubits can be spectrally multiplexed in each resonator, the demonstrated hardware platform offers unique promise for distributed quantum information processing based on scalable, integrated silicon devices.https://doi.org/10.1038/s41467-024-55552-9 |
| spellingShingle | Andreas Gritsch Alexander Ulanowski Jakob Pforr Andreas Reiserer Optical single-shot readout of spin qubits in silicon Nature Communications |
| title | Optical single-shot readout of spin qubits in silicon |
| title_full | Optical single-shot readout of spin qubits in silicon |
| title_fullStr | Optical single-shot readout of spin qubits in silicon |
| title_full_unstemmed | Optical single-shot readout of spin qubits in silicon |
| title_short | Optical single-shot readout of spin qubits in silicon |
| title_sort | optical single shot readout of spin qubits in silicon |
| url | https://doi.org/10.1038/s41467-024-55552-9 |
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