| Autor: |
G.A. Oakes, L. Peri, L. Cochrane, F. Martins, L. Hutin, B. Bertrand, M. Vinet, A. Gomez Saiz, C.J.B. Ford, C.G. Smith, M.F. Gonzalez-Zalba |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
PRX Quantum, Vol 4, Iss 2, p 020346 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2691-3399 |
| DOI: |
10.1103/PRXQuantum.4.020346 |
| Popis: |
Silicon offers the enticing opportunity to integrate hybrid quantum-classical computing systems on a single platform. For qubit control and readout, high-frequency signals are required. Therefore, devices that can facilitate its generation are needed. Here, we present a quantum dot-based radio-frequency multiplier operated at cryogenic temperatures. The device is based on the nonlinear capacitance-voltage characteristics of quantum dot systems arising from their low-dimensional density of states. We implement the multiplier in a multigate silicon-nanowire transistor using two complementary device configurations: a single quantum dot coupled to a charge reservoir and a coupled double quantum dot. We study the harmonic voltage conversion as a function of the energy detuning, the multiplication factor, and the harmonic phase noise and find near ideal performance up to a multiplication factor of 10. Our results demonstrate a method for high-frequency conversion that could be readily integrated into silicon-based quantum computing systems and be applied to other semiconductors. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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