A Cryo-CMOS Wideband Quadrature Receiver With Frequency Synthesizer for Scalable

Abstract

In this article, a cryo-CMOS receiver integrated with a frequency synthesizer for scalable multiplexed readout of qubits is presented, focusing on radio frequency (RF) reflectome- try readout of silicon-based semiconductor spin qubits/quantum dots. The proposed spin qubit readout chip consists of a wide- band low noise amplifier (LNA), a quadrature mixer, a com- plex filter, a pair of in-phase/quadrature (I/Q) intermediate frequency (IF) amplifier chains, and a type-II charge-pump phase-locked loop