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| Home > Publications database > Scalable Cryogenic Qubit Control with Optimized CMOS Technologies |
| Poster (Other) | FZJ-2022-03646 |
2022
Please use a persistent id in citations: http://hdl.handle.net/2128/32027
Abstract: The scalability of electrically controlled qubits beyond about a few hundred to a thousand qubits will be limited by signal line density. An attractive solution is to move classical functionality to the immediate vicinity of the qubits. In order to achieve the necessary functionality density, the use of highly integrated approaches, such as those enabled by modern CMOS technologies, is essential. CMOS offers advantages in terms of industrial development maturity and highest integration density. The challenges for the operation of CMOS electronics at cryogenic temperatures are on the one hand the low available cooling power (depending on the temperature range some milliwatts below 1 K to some watts below < 10 K) and on the other hand, the temperature range for which the technologies are specified, which is typically from -40 to +150°C. This includes technology characterization at below 10 K, which will be conducted at the Central Institute of Engineering, Electronics and Analytics - Electronic Systems (ZEA-2) at the Forschungszentrum Jülich in their cryostat needle probing setup, in order to create cryogenic models for one of the most promising CMOS technologies for cryogenic applications, the GlobalFoundries (GF) 22nm FDSOI technology. In addition, a demonstrator IC for local cryogenic qubit control will be designed at the ZEA-2, which requires an optimized design and special circuit concepts for lowest power consumption and scalability as an active research field of the ZEA-2. The demonstrator IC will be fabricated by GF, displaying the full potential of the characterizations (cryogenic PDK) and cryogenic optimizations of the GF 22nm technology. This subproject thus contributes significantly to exploring new ways of scaling the number of simultaneously operable qubits far beyond what is possible with room-temperature electronics.
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