The Lab & Other Facilities
Cryogenic
We currently have one dilution refrigerator (base temp of 7mK) and will receive a second system (expected base temp of 4.5mK) in the late spring of 2008. Each system is constructed in the following way:
- Mounted on massive (~10 tonne) vibration isolation system
- 9T magnet, suitable for magnetomotive detection or adiabatic demagnetization refrigeration
- Located inside rf sheilded enclosure, 100db attenuation at 1GHz.
- Shielded room lined with radar absorbing material
- Optically isolated electrical feedthroughs (DC-60kHz)
We also have a number of basic systems for testing samples:
- 4K Ultra-low loss experimental Dewar
- 9 Tesla magnet system, 5" bore, 4K
- Dip probe configured for microwave measurements
- 1K refrigerator system
Nanofabrication
Our samples are fabricated at the Cornell Nanofabrication Facility (CNF), arguably the most advanced cleanroom in the academic community.
We have access to a suite of state-of-the-art materials characterization and inspection instruments at the Cornell Center for Materials Research (CCMR).
We have constructed a dedicated evaporator for the fabrication of Al tunnel junctions for single electron transistors and superconducting qubits. This system is cryopumped with base pressure of 1 10^-9 torr and is outfitted with a LN2 cooled, rotating sample stage.
Electronics
Our laboratory is outfitted with advanced electronic measurement instruments, capable of producing the most sensitive measurements possible.
- 9 kHz - 13.5 GHz Spectrum Analzer with 25MHz digitizing bandwidth, Agilent MXA
- 300 KHz - 13.5 GHz Network Analyzer, Agilent N5230A
- 1 GHz, 4 channel sampling oscilliscope
- 200 MHz RF lockin amplifier
- 240 MHz Arbitrary function generator
- Quantum Design DC squid system
- Delay / Pulse generator (Stanford Research)
- Various ultra-sensitive HEMT amplifiers spanning 1 to 12 GHz
