Title |
Electrically controlling single-spin qubits in a continuous microwave field
|
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Published in |
Science Advances, April 2015
|
DOI | 10.1126/sciadv.1500022 |
Pubmed ID | |
Authors |
Arne Laucht, Juha T. Muhonen, Fahd A. Mohiyaddin, Rachpon Kalra, Juan P. Dehollain, Solomon Freer, Fay E. Hudson, Menno Veldhorst, Rajib Rahman, Gerhard Klimeck, Kohei M. Itoh, David N. Jamieson, Jeffrey C. McCallum, Andrew S. Dzurak, Andrea Morello |
Abstract |
Large-scale quantum computers must be built upon quantum bits that are both highly coherent and locally controllable. We demonstrate the quantum control of the electron and the nuclear spin of a single (31)P atom in silicon, using a continuous microwave magnetic field together with nanoscale electrostatic gates. The qubits are tuned into resonance with the microwave field by a local change in electric field, which induces a Stark shift of the qubit energies. This method, known as A-gate control, preserves the excellent coherence times and gate fidelities of isolated spins, and can be extended to arbitrarily many qubits without requiring multiple microwave sources. |
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United Kingdom | 2 | 10% |
Australia | 1 | 5% |
Isle of Man | 1 | 5% |
Thailand | 1 | 5% |
Mexico | 1 | 5% |
France | 1 | 5% |
Unknown | 5 | 25% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 16 | 80% |
Scientists | 3 | 15% |
Science communicators (journalists, bloggers, editors) | 1 | 5% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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France | 3 | 1% |
Germany | 1 | <1% |
Switzerland | 1 | <1% |
Vietnam | 1 | <1% |
Australia | 1 | <1% |
United Kingdom | 1 | <1% |
Canada | 1 | <1% |
Japan | 1 | <1% |
United States | 1 | <1% |
Other | 0 | 0% |
Unknown | 193 | 95% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 66 | 32% |
Researcher | 36 | 18% |
Student > Master | 28 | 14% |
Student > Bachelor | 11 | 5% |
Student > Doctoral Student | 9 | 4% |
Other | 25 | 12% |
Unknown | 29 | 14% |
Readers by discipline | Count | As % |
---|---|---|
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Engineering | 22 | 11% |
Materials Science | 11 | 5% |
Chemistry | 9 | 4% |
Business, Management and Accounting | 1 | <1% |
Other | 5 | 2% |
Unknown | 29 | 14% |