Microwave SQUID multiplexer
- 13 September 2004
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 85 (11), 2107-2109
- https://doi.org/10.1063/1.1791733
Abstract
We describe a superconducting quantum interference device (SQUID) multiplexer operated at microwave frequencies. The outputs of multiple SQUIDs are simultaneously modulated at different frequencies and summed into the input of one high electron mobility transistor (HEMT). The large bandwidth and dynamic range provided by HEMT amplifiers should make it possible to frequency-division multiplex a large number of SQUIDs in one output coaxial cable. We measure low SQUID noise ( at ) and demonstrate the multiplexed readout of two direct current (dc) SQUIDs at different resonant frequencies. In this work, dc SQUIDs are used, but this approach is equally applicable to radio-frequency SQUIDs.
This publication has 12 references indexed in Scilit:
- In-focal-plane SQUID multiplexerNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2004
- A broadband superconducting detector suitable for use in large arraysNature, 2003
- Multiplexing of radio-frequency single-electron transistorsApplied Physics Letters, 2002
- Single superconducting quantum interference device multiplexer for arrays of low-temperature sensorsApplied Physics Letters, 2001
- Superconducting multiplexer for arrays of transition edge sensorsApplied Physics Letters, 1999
- Detection of single infrared, optical, and ultraviolet photons using superconducting transition edge sensorsApplied Physics Letters, 1998
- Radio-frequency amplifier based on a niobium dc superconducting quantum interference device with microstrip input couplingApplied Physics Letters, 1998
- Theory of RF SQUIDs Operating in the Presence of Large Thermal FluctuationsJournal of Low Temperature Physics, 1998
- A three channel SQUID-system using a multiplexed readoutIEEE Transactions on Magnetics, 1991
- Design and Operation of Stable rf-Biased Superconducting Point-Contact Quantum Devices, and a Note on the Properties of Perfectly Clean Metal ContactsJournal of Applied Physics, 1970