category: Quantum

category: IoT, Security & Automotive

Substitutional synthesis of sub-nanometer InGaN/GaN quantum wells with high indium content
By Technical Paper Link - 03 Nov, 2021 - Comments: 0

Abstract "InGaN/GaN quantum wells (QWs) with sub-nanometer thickness can be employed in short-period superlattices for bandgap engineering of efficient optoelectronic devices, as well as for exploiting topological insulator behavior in III-nitride semiconductors. However, it had been argued that the highest indium content in such ultra-thin QWs is kinetically limited to a maximum of 33%, narro... » read more

Materials and Device Simulations for Silicon Qubit Design and Optimization
By Technical Paper Link - 27 Oct, 2021 - Comments: 0

Abstract: "Silicon-based microelectronics technology is extremely mature, yet this profoundly important material is now also poised to become a foundation for quantum information processing technologies. In this article, we review the properties of silicon that have made it the material of choice for semiconductor-based qubits with an emphasis on the role that modeling and simulation have play... » read more

Buried nanomagnet realizing high-speed/low-variability silicon spin qubits: implementable in error-correctable large-scale quantum computers
By Technical Paper Link - 27 Oct, 2021 - Comments: 0

Abstract: "We propose a buried nanomagnet (BNM) realizing highspeed/low-variability silicon spin qubit operation, inspired by buried wiring technology, for the first time. High-speed quantum-gate operation results from large slanting magnetic-field generated by the BNM disposed quite close to a spin qubit, and low-variation of fidelity thanks to the self-aligned fabrication process. Employing ... » read more

Uniform Spin Qubit Devices with Tunable Coupling in an All-Silicon 300 mm Integrated Process
By Technical Paper Link - 26 Oct, 2021 - Comments: 0

Abstract: Larger arrays of electron spin qubits require radical improvements in fabrication and device uniformity. Here we demonstrate excellent qubit device uniformity and tunability from 300K down to mK temperatures. This is achieved, for the first time, by integrating an overlapping polycrystalline silicon-based gate stack in an ‘all-Silicon’ and lithographically flexible 300mm flow. ... » read more

MXene-GaN van der Waals metal-semiconductor junctions for high performance multiple quantum well photodetectors
By Technical Paper Link - 12 Oct, 2021 - Comments: 0

Abstract: "A MXene-GaN-MXene based multiple quantum well photodetector was prepared on patterned sapphire substrate by facile drop casting. The use of MXene electrodes improves the responsivity and reduces dark current, compared with traditional Metal-Semiconductor-Metal (MSM) photodetectors using Cr/Au electrodes. Dark current of the device using MXene-GaN van der Waals junctions is reduced b... » read more

Variational Quantum Algorithms (VQA)
By Technical Paper Link - 27 Aug, 2021 - Comments: 0

  Abstract "Applications such as simulating large quantum systems or solving large-scale linear algebra problems are immensely challenging for classical computers due their extremely high computational cost. Quantum computers promise to unlock these applications, although fault-tolerant quantum computers will likely not be available for several years. Currently available quantum device... » read more

Emergent magnetic monopoles isolated using quantum-annealing computer
By Technical Paper Link - 27 Jul, 2021 - Comments: 0

Using D-Wave’s quantum-annealing computer, Los Alamos National Laboratory has shown that it’s possible to isolate magnetic monopoles. This research could one day enable future nanomagnets.   Abstract: "Artificial spin ices are frustrated spin systems that can be engineered, wherein fine tuning of geometry and topology has allowed the design and characterization of exotic eme... » read more

Solution-processable integrated CMOS circuits based on colloidal CuInSe2 quantum dots
By Technical Paper Link - 11 Jan, 2021 - Comments: 0

Researchers at Los Alamos National Laboratory and University of California Irvine used quantum dots to create transistors which can be assembled into functional logic circuits. “Potential applications of the new approach to electronic devices based on non-toxic quantum dots include printable circuits, flexible displays, lab-on-a-chip diagnostics, wearable devices, medical testing, smart im... » read more

Microwave quantum illumination using a digital receiver
By Technical Paper Link - 31 Jan, 2020 - Comments: 0

Abstract "Quantum illumination is a powerful sensing technique that employs entangled signal-idler photon pairs to boost the detection efficiency of low-reflectivity objects in environments with bright thermal noise. The promised advantage over classical strategies is particularly evident at low signal powers, a feature which could make the protocol an ideal prototype for non-invasive biomed... » read more

Silicon CMOS Architecture For A Spin-based Quantum Computer
By Technical Paper Link - 24 Jan, 2018 - Comments: 1

Source: UNSW Sydney Authors: M. Veldhorst (1,2),  H.G.J. Eenink (2,3) , C.H. Yang (2), and A.S. Dzurak (2) 1 Qutech, TU Delft, The Netherlands 2 Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications,UNSW, Sydney, Australia 3 NanoElectronics Group, MESA+ Institute for Nanotechnology,University of Twente, The Netherlands Te... » read more

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