Quantum Nanostructures and
Nanofabrication Group

Prof. Karl K. Berggren and Dr. P. Donald Keathley

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New Publication “Nanoscale refractory doped titanium nitride field emitters”

New Publication “Nanoscale refractory doped titanium nitride field emitters”

Apr 30, 2021 | News Articles

Refractory materials exhibit high damage tolerance, which is attractive for the creation of nanoscale field-emission electronics and optoelectronics applications that require operation at high peak current densities and optical intensities. Recent results have...
New Publication  “On-chip sampling of optical fields with attosecond resolution”

New Publication “On-chip sampling of optical fields with attosecond resolution”

Apr 15, 2021 | News Articles

We demonstrate an on-chip, optoelectronic device capable of sampling arbitrary, low-energy, near-infrared waveforms under ambient conditions with sub-optical-cycle resolution. Our detector uses field-driven photoemission from resonant nanoantennas to create attosecond...
Owen Medeiros awarded NDSEG fellowship

Owen Medeiros awarded NDSEG fellowship

Apr 1, 2021 | News Articles

Congratulations to Owen Medeiros on receiving the National Defense Science and Engineering Graduate Fellowship. This prestigious and competitive award will support his work for three years.
Emma Batson and Owen Medeiros awarded NSF fellowship

Emma Batson and Owen Medeiros awarded NSF fellowship

Apr 1, 2021 | News Articles, Uncategorized

Congratulations to Emma Batson and Owen Medeiros on receiving the National Science Foundation Graduate Research Fellowship. This prestigious and competitive award will support their work for three years. a
New Publication  “Impact of DC bias on weak optical-field-driven electron emission in nano-vacuum-gap detectors”

New Publication “Impact of DC bias on weak optical-field-driven electron emission in nano-vacuum-gap detectors”

Feb 26, 2021 | News Articles

In this work, we investigate multiphoton and optical field tunneling emission from metallic surfaces with nanoscale vacuum gaps. Using time-dependent Schrödinger equation (TDSE) simulations, we find that the properties of the emitted photocurrent in such systems can...
New Publication  “Compact and Tunable Forward Coupler Based on High-Impedance Superconducting Nanowires”

New Publication “Compact and Tunable Forward Coupler Based on High-Impedance Superconducting Nanowires”

Feb 25, 2021 | News Articles

Developing compact, low-dissipation, cryogenic-compatible microwave electronics is essential for scaling up low-temperature quantum computing systems. In this paper, we demonstrate an ultracompact microwave directional forward coupler based on high-impedance slow-wave...
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