WASHINGTON, D.C., August 11, 2017 -- Investigators at the University of Colorado, Boulder and the National Institute of Standards and Technology (NIST) have developed a new sensor array-based instrument that offers ultra-low noise detection of small amounts of energy for a number of applications.
The instrument consists of 128 superconducting sensors and combines their output into a single channel provided by a pair of coaxial cables.
In the past, array size was limited by the bandwidth available to combine signals into a reasonable number of output channels.
This new research demonstrates a hundred-fold bandwidth improvement, and the investigators plan to do even better soon.
They overcame the bandwidth barrier by using very cold superconducting microwave circuitry and superconducting quantum interference device amplifiers, known as SQUIDs, capable of boosting the intensity of small signals.
The new device uses radiofrequency SQUIDs to regulate high-quality microwave resonators.