53 research outputs found
Ion traps fabricated in a CMOS foundry
We demonstrate trapping in a surface-electrode ion trap fabricated in a 90-nm
CMOS (complementary metal-oxide-semiconductor) foundry process utilizing the
top metal layer of the process for the trap electrodes. The process includes
doped active regions and metal interconnect layers, allowing for co-fabrication
of standard CMOS circuitry as well as devices for optical control and
measurement. With one of the interconnect layers defining a ground plane
between the trap electrode layer and the p-type doped silicon substrate, ion
loading is robust and trapping is stable. We measure a motional heating rate
comparable to those seen in surface-electrode traps of similar size. This is
the first demonstration of scalable quantum computing hardware, in any
modality, utilizing a commercial CMOS process, and it opens the door to
integration and co-fabrication of electronics and photonics for large-scale
quantum processing in trapped-ion arrays.Comment: 4 pages, 3 figure
Unconventional Low-Cost Fabrication and Patterning Techniques for Point of Care Diagnostics
The potential of rapid, quantitative, and sensitive diagnosis has led to many innovative ‘lab on chip’ technologies for point of care diagnostic applications. Because these chips must be designed within strict cost constraints to be widely deployable, recent research in this area has produced extremely novel non-conventional micro- and nano-fabrication innovations. These advances can be leveraged for other biological assays as well, including for custom assay development and academic prototyping. The technologies reviewed here leverage extremely low-cost substrates and easily adoptable ways to pattern both structural and biological materials at high resolution in unprecedented ways. These new approaches offer the promise of more rapid prototyping with less investment in capital equipment as well as greater flexibility in design. Though still in their infancy, these technologies hold potential to improve upon the resolution, sensitivity, flexibility, and cost-savings over more traditional approaches
Engineering of microfabricated ion traps and integration of advanced on-chip features
Atomic ions trapped in electromagnetic potentials have long been used for fundamental studies in quantum physics. Over the past two decades, trapped ions have been successfully used to implement technologies such as quantum computing, quantum simulation, atomic clocks, mass spectrometers and quantum sensors. Advanced fabrication techniques, taken from other established or emerging disciplines, are used to create new, reliable ion-trap devices aimed at large-scale integration and compatibility with commercial fabrication. This Technical Review covers the fundamentals of ion trapping before discussing the design of ion traps for the aforementioned applications. We overview the current microfabrication techniques and the various considerations behind the choice of materials and processes. Finally, we discuss current efforts to include advanced, on-chip features in next-generation ion traps
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