Presentation Information
[21p-B204-14]Demonstration of a Fast Modulated Microwave SQUID Multiplexer Readout of Optical Transition Edge Sensors
〇Ryota Hayakawa1,2, Daiji Fukuda1,3, Kaori Hattori1,2,3, Fuminori Hirayama1, Takahiro Kikuchi1, Satoshi Kohjiro1, Akira Sato1, Hirotake Yamamori1 (1.AIST, 2.KEK/QUP, 3.OPERANDO-OIL)
Keywords:
Transition-Edge Sensor (TES),microwave SQUID multiplexing readout
An optical transition-edge sensor is a TES detector optimized for the visible to near-infrared wavelength range, and has recently begun to be applied to a variety of applications ranging from quantum information and bio-imaging to light dark-matter search. We are developing a system in which optical TES are arrayed in multipixel arrays to provide a large detection area, and the signals from these arrays are multiplexed and read out at high speed using a microwave SQUID multiplexing frequency division scheme (MW-Mux). We have reported on the evaluation of crosstalk in the readout circuit using an evaluation chip. This time, we have developed a new 40-pixel high-speed MW-Mux chip for optical TES readout with a resonance frequency interval of 80 MHz, a resonance frequency variation of 20 MHz, and a resonator bandwidth of 20 MHz. We report the evaluation results of the 40-pixel high-speed Mw-Mux chip.