Electrical Read-Out of a Single Spin Using an Exchange-Coupled Quantum Dot
We present an original way of continuously reading-out the state of a single electronic spin. Our detection scheme is based on an exchange interaction between the electronic spin and a nearby read-out quantum dot. The coupling between the two systems results in a spin-dependent conductance through t...
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| Veröffentlicht in: | ACS nano 2017-04, Vol.11 (4), p.3984-3989 |
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| container_end_page | 3989 |
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| container_issue | 4 |
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| container_title | ACS nano |
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| creator | Godfrin, Clément Thiele, Stefan Ferhat, Abdelkarim Klyatskaya, Svetlana Ruben, Mario Wernsdorfer, Wolfgang Balestro, Franck |
| description | We present an original way of continuously reading-out the state of a single electronic spin. Our detection scheme is based on an exchange interaction between the electronic spin and a nearby read-out quantum dot. The coupling between the two systems results in a spin-dependent conductance through the read-out dot and establishes an all electrical and nondestructive single spin detection. With conductance variations up to 4% and read-out fidelities greater than 99.5%, this method represents an alternative to systems for which spin-to-charge conversion cannot be implemented. Using a semiclassical approach, we present an asymmetric exchange coupling model in good agreement with our experimental results. |
| doi_str_mv | 10.1021/acsnano.7b00451 |
| format | Article |
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| ispartof | ACS nano, 2017-04, Vol.11 (4), p.3984-3989 |
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| language | eng |
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| source | American Chemical Society Journals |
| subjects | Physics |
| title | Electrical Read-Out of a Single Spin Using an Exchange-Coupled Quantum Dot |
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