Magnetics Business & Technology - January/February 2023 - 9

FEATURE ARTICLE
achieve high system scalability.
" With FormFactor's probe socket solution, " he says, " we have
been able to eliminate wire-bonding for qubits, SFQ circuits,
and multi-chip modules for faster device characterization to
identify the known-good die for final quantum testing. This has
streamlined and improved our device characterization process
especially in providing fast feedback to our foundry fabricating
superconducting integrated circuits and multi-chip modules. "
Based in Elmsford, New York, and with facilities in London and
Naples, SEEQC is a spin-out of HYPRES, a leading developer
of superconductor electronics.
Test lab in Boulder, Colorado
In January 2022, FormFactor launched a cryogenic test service
enabling developers to dramatically reduce the time and cost
for quantum computing IC development and superconducting
qubit characterization. Its Advanced Cryogenics Lab in Colorado
features an integrated measurement solution developed
by FormFactor and Keysight for pre-screening qubit devices at
50 millikelvin.
Quantum system engineers can use the lab to collect critical
qubit performance data to quickly eliminate sub-optimal devices
before integrating them into quantum computers, enabling more
effective utilization of expensive dilution refrigerators. " This is
an excellent example of combining Keysight's Quantum Control
System with cryogenic systems and probes like FormFactor's to
capture pertinent data to accelerate quantum computing development
cycles, " said Liz Ruetsch, general manager of quantum
engineering services at Keysight.
The lab service follows FormFactor's acquisition in 2020 of
High Precision Devices, Inc., in Boulder, a maker of precision
cryogenic instruments including chip-scale cryogenic probe systems
and cryostats capable of extreme low temperatures that
added to FormFactor's line of cryogenic wafer probe systems,
and cryogenic engineering probes.
In 2021, FomFactor
launched its first product
for the quantum computing
market, the IQ1000, a scanning
SQUID (Superconducting
Quantum Interference
Device) microscope.
With rapid scan speed
and process automation,
it enables unattended and
high-throughput characterization
of trapped magnetic
flux in superconducting
circuits. It helps superconducting
device designers
to eliminate the guesswork
involved in the design of
resilient superconducting
circuits, and significantly
flux sensor over the sample surface with sub-micron resolution
to generate images of magnetic flux and material magnetic
susceptibility. The microscope also enables the study of vortex
dynamics in the circuit using XYZ-vectored magnetic fields,
precise sample temperature control, and direct manipulation
of vortices using the sensor field coils. These characterization
techniques allow circuit designers to see where vortices are
trapped in patterned superconducting thin films and understand
the effect of specific circuit layouts and material properties on
vortex trapping.
From its headquarters
in Livermore,
California, FormFactor
provides test and measurement
technologies
along the full IC life
cycle from metrology
and inspection, characterization,
modeling,
reliability, and design
debug, to qualification
and production test.
It has a network of facilities
in Asia, Europe
and North America. The company started in 1993 when former
IBM researcher, Igor Khandros, began developing products for
the semiconductor industry in a tiny New York lab.
For more info, see www.formfactor.com.
AN
EVOLUTION
IN POWER
MAGNETICS
IQ1000 SQUID microscope for studying
magnetic vortices in superconducting
circuits
reduce development time by locating and capturing detrimental
magnetic vortices to enhance device performance.
A SQUID is basically a superconducting loop configured to form
a sensor which converts magnetic flux to a signal current. The
current passing through it is directly related to the magnetic flux
passing through the loop. The IQ1000 scans a SQUID magnetic
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January/February 2023 * Magnetics Business & Technology 9
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Magnetics Business & Technology - January/February 2023

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