Pauli spin blockade at room temperature in double-quantum-dot tunneling through individual deep dopants in silicon
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866912498572066816 |
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| author | Ban, Yoshisuke Kato, Kimihiko Iizuka, Shota Oka, Hiroshi Murakami, Shigenori Ishibashi, Koji Moriyama, Satoshi Mori, Takahiro Ono, Keiji |
| author_facet | Ban, Yoshisuke Kato, Kimihiko Iizuka, Shota Oka, Hiroshi Murakami, Shigenori Ishibashi, Koji Moriyama, Satoshi Mori, Takahiro Ono, Keiji |
| contents | Pauli spin blockade (PSB) is a spin-dependent charge transport process that typically appears in double quantum dot (QD) devices and is employed in fundamental research on single spins in nanostructures to read out semiconductor qubits. The operating temperature of PSB is limited by that of the QDs and remains below 10 K, limiting wide application development. Herein, we confirm that a single deep dopant in the channel of a silicon field effect transistor functions as a room-temperature QD; consequently, transport through two different deep dopants exhibits PSB up to room temperature. The characteristic magnetoconductance provides a means to identify PSB and enables the PSB device to function as a magnetic sensor with a sensitivity below geomagnetic field. Lifting in PSB caused by magnetic resonance (50 K) and Rabi oscillations (10 K) are also observed. Further development of this unique system may lead to room-temperature quantum technologies based on silicon technology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_10881 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Pauli spin blockade at room temperature in double-quantum-dot tunneling through individual deep dopants in silicon Ban, Yoshisuke Kato, Kimihiko Iizuka, Shota Oka, Hiroshi Murakami, Shigenori Ishibashi, Koji Moriyama, Satoshi Mori, Takahiro Ono, Keiji Mesoscale and Nanoscale Physics Quantum Physics Pauli spin blockade (PSB) is a spin-dependent charge transport process that typically appears in double quantum dot (QD) devices and is employed in fundamental research on single spins in nanostructures to read out semiconductor qubits. The operating temperature of PSB is limited by that of the QDs and remains below 10 K, limiting wide application development. Herein, we confirm that a single deep dopant in the channel of a silicon field effect transistor functions as a room-temperature QD; consequently, transport through two different deep dopants exhibits PSB up to room temperature. The characteristic magnetoconductance provides a means to identify PSB and enables the PSB device to function as a magnetic sensor with a sensitivity below geomagnetic field. Lifting in PSB caused by magnetic resonance (50 K) and Rabi oscillations (10 K) are also observed. Further development of this unique system may lead to room-temperature quantum technologies based on silicon technology. |
| title | Pauli spin blockade at room temperature in double-quantum-dot tunneling through individual deep dopants in silicon |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2409.10881 |