Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors
Quantum processors based on color centers in diamond are promising candidates for future large-scale quantum computers thanks to their flexible optical interface, (relatively) high operating temperature, and high-fidelity operation. Similar to other quantum computing platforms, the electrical interf...
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Transactions on Quantum Engineering |
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| Online Access: | https://ieeexplore.ieee.org/document/10564136/ |
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| _version_ | 1832583984366747648 |
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| author | Luc Enthoven Masoud Babaie Fabio Sebastiano |
| author_facet | Luc Enthoven Masoud Babaie Fabio Sebastiano |
| author_sort | Luc Enthoven |
| collection | DOAJ |
| description | Quantum processors based on color centers in diamond are promising candidates for future large-scale quantum computers thanks to their flexible optical interface, (relatively) high operating temperature, and high-fidelity operation. Similar to other quantum computing platforms, the electrical interface required to control and read out such qubits may limit both the performance of the whole system and its scalability. To address this challenge, this work analyzes the requirements of the electrical interface and investigates how to efficiently implement the electronic controller in a scalable architecture comprising a large number of identical unit cells. Among the different discussed functionalities, a specific focus is devoted to the generation of the static and dynamic magnetic fields driving the electron and nuclear spins, because of their major impact on fidelity and scalability. Following the derived requirements, different system architectures, such as a qubit frequency-multiplexing scheme, are considered to identify the most power efficient approach, especially in the presence of inhomogeneity of the qubit Larmor frequency across the processor. As a result, a non-frequency-multiplexed 1-<inline-formula><tex-math notation="LaTeX">$\,\mathrm{m}\mathrm{m}^{2}$</tex-math></inline-formula> unit-cell architecture is proposed as the optimal solution, able to address up to one electron-spin qubit and nine nuclear-spin qubits within a 3-mW average power consumption, thus establishing the baseline for the scalable electrical interface for future large-scale color-center quantum computers. |
| format | Article |
| id | doaj-art-798d2cc1a6864770aa64031c2b3d1bf2 |
| institution | Kabale University |
| issn | 2689-1808 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Transactions on Quantum Engineering |
| spelling | doaj-art-798d2cc1a6864770aa64031c2b3d1bf22025-01-28T00:02:25ZengIEEEIEEE Transactions on Quantum Engineering2689-18082024-01-01511710.1109/TQE.2024.341683610564136Optimizing the Electrical Interface for Large-Scale Color-Center Quantum ProcessorsLuc Enthoven0https://orcid.org/0009-0009-0265-1759Masoud Babaie1https://orcid.org/0000-0001-7635-5324Fabio Sebastiano2https://orcid.org/0000-0002-8489-9409QuTech, Delft University of Technology, Delft, The NetherlandsQuTech, Delft University of Technology, Delft, The NetherlandsQuTech, Delft University of Technology, Delft, The NetherlandsQuantum processors based on color centers in diamond are promising candidates for future large-scale quantum computers thanks to their flexible optical interface, (relatively) high operating temperature, and high-fidelity operation. Similar to other quantum computing platforms, the electrical interface required to control and read out such qubits may limit both the performance of the whole system and its scalability. To address this challenge, this work analyzes the requirements of the electrical interface and investigates how to efficiently implement the electronic controller in a scalable architecture comprising a large number of identical unit cells. Among the different discussed functionalities, a specific focus is devoted to the generation of the static and dynamic magnetic fields driving the electron and nuclear spins, because of their major impact on fidelity and scalability. Following the derived requirements, different system architectures, such as a qubit frequency-multiplexing scheme, are considered to identify the most power efficient approach, especially in the presence of inhomogeneity of the qubit Larmor frequency across the processor. As a result, a non-frequency-multiplexed 1-<inline-formula><tex-math notation="LaTeX">$\,\mathrm{m}\mathrm{m}^{2}$</tex-math></inline-formula> unit-cell architecture is proposed as the optimal solution, able to address up to one electron-spin qubit and nine nuclear-spin qubits within a 3-mW average power consumption, thus establishing the baseline for the scalable electrical interface for future large-scale color-center quantum computers.https://ieeexplore.ieee.org/document/10564136/Cointegrationcolor centerscryo-CMOSfrequency-division multiple access (FDMA)magnetic field generationnitrogen-vacancy (NV) center |
| spellingShingle | Luc Enthoven Masoud Babaie Fabio Sebastiano Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors IEEE Transactions on Quantum Engineering Cointegration color centers cryo-CMOS frequency-division multiple access (FDMA) magnetic field generation nitrogen-vacancy (NV) center |
| title | Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors |
| title_full | Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors |
| title_fullStr | Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors |
| title_full_unstemmed | Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors |
| title_short | Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors |
| title_sort | optimizing the electrical interface for large scale color center quantum processors |
| topic | Cointegration color centers cryo-CMOS frequency-division multiple access (FDMA) magnetic field generation nitrogen-vacancy (NV) center |
| url | https://ieeexplore.ieee.org/document/10564136/ |
| work_keys_str_mv | AT lucenthoven optimizingtheelectricalinterfaceforlargescalecolorcenterquantumprocessors AT masoudbabaie optimizingtheelectricalinterfaceforlargescalecolorcenterquantumprocessors AT fabiosebastiano optimizingtheelectricalinterfaceforlargescalecolorcenterquantumprocessors |