Jabez J. McClelland

130-nm CMOS-Integrated Superparamagnetic Tunnel Junction-Based p-bit

Ju-Young Yoon, Nuno Caçoilo, Advait Madhavan, Jabez J. McClelland et autres

Probabilistic computers offer promising solutions for computationally hard problems in domains such as combinatorial optimization and machine learning. A key building block in these systems is the probabilistic bit (p-bit), which relies on superparamagnetic tunnel junctions (sMTJs) as its source of randomness. …

jp, us (code pays fourni par la source)

Electron-beam induced modulation of surface conduction in hydrogen-terminated diamond

Sebastian Wood, Evgheni Strelcov, Junyeob Song, Albert Davydov et autres

Hydrogen-terminated diamond is a promising platform for diamond-based high-power-frequency electronics and radiation-hardened semiconductor devices exhibiting controllable electrical conduction through an accumulated sub-surface 2D hole-gas layer. The diamond conductivity is highly sensitive to local surface conditions, offering new opportunities for device engineering, quantum …

gb, us (code pays fourni par la source)

CMOS-integrated superparamagnetic tunnel junction-based p-bit

Ju-Young Yoon, Nuno Caçoilo, Advait Madhavan, Jabez J. McClelland et autres

Probabilistic computers offer promising solutions for computationally hard problems in domains such as combinatorial optimization and machine learning. A key building block in these systems is the probabilistic bit (p-bit), which relies on superparamagnetic tunnel junctions (sMTJs) as its source of randomness. …

CMOS-integrated superparamagnetic tunnel junction-based p-bit

Ju-Young Yoon, Nuno Caçoilo, Advait Madhavan, Jabez J. McClelland et autres

Probabilistic computers offer promising solutions for computationally hard problems in domains such as combinatorial optimization and machine learning. A key building block in these systems is the probabilistic bit (p-bit), which relies on superparamagnetic tunnel junctions (sMTJs) as its source of randomness. …

jp, us (code pays fourni par la source)

Electron-beam induced modulation of surface conduction in hydrogen-terminated diamond

Sebastian Wood, Evgheni Strelcov, Junyeob Song, Albert V. Davydov et autres

gb, in (code pays fourni par la source)

Sampling from exponential distributions in the time domain with superparamagnetic tunnel junctions

Temitayo N. Adeyeye, Sidra Gibeault, Daniel Perry Lathrop, Matthew W. Daniels et autres

This work explores time domain statistics of superparamagnetic tunnel junctions (SMTJs). We leverage a temporal encoding scheme to experimentally sample exponential distributions from the dwell time statistics of these devices. We develop SMTJ-based circuits called probabilistic delay cells to produce stochastic time-delayed …

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ReRAM/CMOS Array Integration and Characterization via Design of Experiments

Imtiaz Hossen, William A. Borders, Advait Madhavan, Shweta Joshi et autres

Abstract No two fabricated Resistive Random Access Memory (ReRAM) devices are alike. Each device can have its own individual optimal set of operating parameters that gives the best performance. However, in an array each device needs to be measured in similar operating …

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Investigation of key performance metrics in TiOX/TiN based resistive random-access memory cells

Brandon R. Zink, William A. Borders, Advait Madhavan, Brian D. Hoskins et autres

Abstract Resistive random-access memory (RRAM) is a promising beyond-CMOS technology due to its non-volatility, scalability, and high ON/OFF ratio. Furthermore, a single RRAM cell can operate as an analog resistor, meaning that it can be used in more novel computing applications such …

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Sampling from exponential distributions in the time domain with superparamagnetic tunnel junctions

Temitayo N. Adeyeye, Sidra Gibeault, Daniel Perry Lathrop, Matthew W. Daniels et autres

In the superparamagnetic regime, magnetic tunnel junctions switch between two resistance states due to random thermal fluctuations. The dwell-time distribution in each state is exponential. We sample this distribution using a temporal encoding scheme, in which information is encoded in the time …

us, fr (code pays fourni par la source)

Signal size and resolution of scanning thermal microscopy in air and vacuum

Jabez J. McClelland, Evgheni Strelcov, Ami Chand

We present measurements comparing scanning thermal microscopy in air and vacuum. Signal levels are compared and resolution is probed by scanning over the edge of a nanofabricated Ag square embedded in [Formula: see text]. Signals measured in air were seen to be …

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Layer ensemble averaging for fault tolerance in memristive neural networks

Osama Yousuf, Brian D. Hoskins, K Ramu, Mitchell Fream et autres

Artificial neural networks have advanced due to scaling dimensions, but conventional computing struggles with inefficiencies due to memory bottlenecks. In-memory computing architectures using memristor devices offer promise but face challenges due to hardware non-idealities. This work proposes layer ensemble averaging—a hardware-oriented fault …

us (code pays fourni par la source)

Sampling from exponential distributions in the time domain with superparamagnetic tunnel junctions

Temitayo N. Adeyeye, Sidra Gibeault, Daniel Perry Lathrop, Matthew W. Daniels et autres

In the superparamagnetic regime, magnetic tunnel junctions switch between two resistance states due to random thermal fluctuations. The dwell time distribution in each state is exponential. We sample this distribution using a temporal encoding scheme, in which information is encoded in the …