A SiGe BiCMOS amplifier for spin-qubits low-frequency readout: Towards a scalable quantum computer

The concept of quantum computing is gaining increasing popularity in the last years due to its potential for running certain classes of algorithms much more efficiently than classical computation. These algorithms span from simulation of quantum mechanical effects to factorization of large number, from simulation of molecules for drug discovery...

Design of a Cryo-CMOS Smart Temperature Sensor

Quantum computers exploit the quantum behavior of quantum bits (qubits) that are typically operated at cryogenic temperature. Qubits require an electronic control interface. Nowadays, such classical electronic controllers use bulky instruments operated far fromthe qubits outside the cryostat. To run practical quantum algorithms, thousands to...

Cryogenic Digital CMOS Memories for Quantum Computing

Scalable universal quantum computers require classical control hardware, physically close to the quantum devices at cryogenic temperatures. Such classical controllers need digital memory for various applications, ranging from high-speed queues to high-speed and low-speed lookup tables and working memory. The power consumption of the memories...

CMOS circuits and systems for cryogenic control of silicon quantum processors

Quantum computers can provide exponential speedup in solving certain computational problems pertaining to drug discovery, cybersecurity, weather forecasting, etc. Although a quantum computer with just 50-qubits has been shown to surpass the computing power of the best supercomputers in specific applications, millions of qubits would be required...

A 7-bit 1-GSa/s Cryo-CMOS ADC for Spin-Qubit Readout

Quantum computing offers exponential speed-up for problems that are computationally intractable with classical computing. However, quantum processors with thousands to millions of quantum bits (qubits) are needed. Room-temperature electronics are used to control and readout today's qubits operating at cryogenic temperature. As the number of...

Design of CMOS Voltage References for Ultra-Wide Temperature Ranges

Voltage references are one of the fundamental building blocks for designing any analog processing circuit. It serves as a reference for Analog to Digital Converters (ADCs), Digital to Analog Converters (DACs), power/voltage regulators and other measurement and control circuits. The performance of all these circuits cannot be better than the...

Characterization and Compact Modeling of Nanometer CMOS Transistors at Deep-Cryogenic Temperatures

Cryogenic characterization and modeling of two nanometer bulk CMOS technologies (0.16-μm and 40-nm) are presented in this paper. Several devices from both technologies were extensively characterized at temperatures of 4 K and below. Based on a detailed understanding of the device physics at deep-cryogenic temperatures, a compact...