CAPST Facilities

The Quantum Science, Engineering, and Technology (QSET, or, []) Lab is being developed at NU as part of our SQMS effort. Some of the major equipment that is currently set up in the lab equipment currently includes but is not limited to:

• Dry Dilution Cryostat – Oxford Instruments Proteux MX500, capable of reaching a base temperature of ~ 10 mK, and cooling power > 450 uW at 100 mK and sample space bound by mixing chamber shield of 360 mm diameter by 650 mm height.
• 20 attenuated and 6 superconducting coaxes. 3 sets of HEMT low noise amplifiers and double and triple junction circulators
• Rohde Schwartz Vector Network Analyzer ZNA26
• Rohde Schwartz Signal Analyzer FSW26
• Rohde Schwartz Oscilloscope RTP164B
• Xylinx ZCU216 FPGA “QICK” board
• Pfeiffer Vacuum HiPace80 turbomolecular pump, dry roots ACP15 pump, ASM340 Dry leak detector

The Northwestern University Atomic and Nanoscale Characterization Experimental Center (NUANCE) consists of:

• Electron Probe Instrumentation Center (EPIC)
• Biological-Cryogenic Electron Microscopy (BioCryo) facility
• Keck Interdisciplinary Surface Science (Keck-II) facility
• Scanned Probe Imaging and Development (SPID) facility

These facilities house a wide variety of microscopy, spectronomy, and other instruments, including the IONTOF M6 Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS).

NUANCE also contains the Northwestern University Micro/Nano Fabrication Facility (NUFAB), which houses many characterization, deposition, and cleanroom tools.

CAPST member Dr. William Halperin is connected with the National High Magnetic Field Laboratory in Tallahassee, Florida, and has access to take measurements in extremely high (>40 Tesla) magnetic fields.

The Northwestern University Center for Atom-Probe Tomography (NUCAPT) operates equipment for atomic-scale imaging and analysis by atom probe tomography and relevant specimen preparation techniques. This equipment includes:

• LEAP 5000 XS Atom Probe Tompograph
• Ion-Beam Sputtering IBSe
• AM0.5 Arc Melter
• MAM-1 Arc Melter
• Electropolisher for APT tips
• Tenupol 5 Electropolisher

The Quantum Nanophotonics Lab is equipped with instrumentation for cryogenic optical, transport, and magneto-optical experiments. Techniques include microscopy, CW and ultrafast optical probes, and quantum optical spectroscopy. Major equipment capabilities include:

• Two low-vibration closed-cycle magneto-optical microscopy cryostats, providing 9T and 7T magnetic fields with microscope objectives and nanopositioning
• Single-photon counting modules and time-correlation electronics with ps resolution
• Cryogenic fiber coupling for photonic circuits
• Femtosecond pulsed lasers with optical parametric oscillator (Coherent Mira and OPO)
• Narrow-linewidth tunable Ti:Sa laser with visible frequency mixing (MSquared SolsTiS)
• Tunable wavelength diode lasers
• Grating spectrometers
• Nanomaterial heterostructure assembly glove box

Quantum Computing Lab One (QCL-1) features two state-of-the-art, extra-large dilution fridges serving as quantum testbeds with multi-qubit control capabilities for quantum computing, sensing and communication research. To allow researchers to perform multiple experiments in a single cooldown, each dilution refrigerator can hold multiple SRF cavities and qubit chips. The large refrigerators have the capacity for meter-long cavities with many cells for multimode operation. One fridge is designed to sustain larger heat loads at the two-kelvin stage for special quantum-sensing physics experiments, such as searches for dark matter.

Quantum Computing Lab One (QCL-2) is a high-flexibility nanofabrication facility to advance cutting-edge research in high-quality films and materials for next-generation superconducting qubits. Here, researchers will focus on superconducting films and quantum devices with capabilities beyond current state-of-the-art facilities. QCL-2 will offer high-quality film deposition tools, double-angle evaporation tools, imaging and characterization tools, wet-processing benches, and post-processing and packaging tools.

The newest SQMS Center flagship facility is one of the largest quantum research laboratories in the country. The former garage space was re-imagined, designed and built by the SQMS collaboration. The 6,000 sq ft lab space is home to five new extra-large dilution refrigerators and devices capable of generating millikelvin temperatures and extremely high and low magnetic field environments. The fridges host platforms developed by the SQMS collaboration for quantum computing, sensing, metrology and communications.

The material science lab offers state-of-the-art characterization equipment that allows for analysis at both room temperature and cryogenic temperatures. This includes time-of-flight secondary ion mass spectrometry, physical property measurement system, scanning probe microscopy, and scanning electron microscopy.