2,502 research outputs found
Thickness dependent interlayer transport in vertical MoS2 Josephson junctions
We report on observations of thickness dependent Josephson coupling and
multiple Andreev reflections (MAR) in vertically stacked molybdenum disulfide
(MoS2) - molybdenum rhenium (MoRe) Josephson junctions. MoRe, a chemically
inert superconductor, allows for oxide free fabrication of high transparency
vertical MoS2 devices. Single and bilayer MoS2 junctions display relatively
large critical currents (up to 2.5 uA) and the appearance of sub-gap structure
given by MAR. In three and four layer thick devices we observe orders of
magnitude lower critical currents (sub-nA) and reduced quasiparticle gaps due
to proximitized MoS2 layers in contact with MoRe. We anticipate that this
device architecture could be easily extended to other 2D materials.Comment: 18 pages, 6 figures including Supporting Informatio
Approaching ultra-strong coupling in Transmon circuit-QED using a high-impedance resonator
In this experiment, we couple a superconducting Transmon qubit to a
high-impedance microwave resonator. Doing so leads to a large
qubit-resonator coupling rate , measured through a large vacuum Rabi
splitting of MHz. The coupling is a significant fraction of the
qubit and resonator oscillation frequencies , placing our system close
to the ultra-strong coupling regime ( on resonance).
Combining this setup with a vacuum-gap Transmon architecture shows the
potential of reaching deep into the ultra-strong coupling
with Transmon qubits
Radiation Tolerant, FPGA-Based SmallSat Computer System
The Radiation Tolerant, FPGA-based SmallSat Computer System (RadSat) computing platform exploits a commercial off-the-shelf (COTS) Field Programmable Gate Array (FPGA) with real-time partial reconfiguration to provide increased performance, power efficiency and radiation tolerance at a fraction of the cost of existing radiation hardened computing solutions. This technology is ideal for small spacecraft that require state-of-the-art on-board processing in harsh radiation environments but where using radiation hardened processors is cost prohibitive
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