(DURIP) CRYOGENIC PROBE STATION AND CONTROL ELECTRONICS FOR MEASUREMENT OF NOVEL JOSEPHSON QUBIT DEVICES AND CIRCUITS
Abstract
This program requests funds for an off-the-shelf cryogenic probe station, room-temperature microwave electronics and for the assembly of cryogenic microwave control and readout lines that will be used to measure superconducting quantum circuits, built with traditional and novel Josephson tunnel junctions. The probe station is a stand-alone cryogen-free DC and RF probe station designed to achieve sample temperature down to 4.5 K. The microwave control electronics consist of a room-temperature FPGA-based arbitrary waveform generator-digitizer system, microwave signal generators and microwave signal processing electronics. The cryogenic control-readout lines are a set heavily filtered coaxial cables, ultra-low-noise microwave amplifiers and circulators which will be integrated into an existing dilution refrigerator cryostat in the PI’s laboratory. These three pieces of instrumentation will advance superconducting quantum information research at the University of Texas at Austin by accelerating the throughput of testing quantum devices. Projects of specific interest to the DOD include (1) improving the scalability of qubit readout by development of quantum-limited superconducting-FET microwave amplifiers, (2) developing superconducting quantum reservoir computers for information processing that is robust to system imperfections, (3) building qubits and other microwave quantum signal processing devices with Josephson tunnel junctions realized with III-V semiconductor and van der Waals heterostructures, and (4) developing photonic and phononic quantum interconnects to link remote superconducting quantum processors. Over the 15-year useful lifetime of these instruments, they will be used in the training and research of several dozens of students and will support national and international collaborations in quantum device engineering.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2023
- Source ID
- FA95502210111
Entities
People
- Shyam Shankar
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Texas at Austin