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We introduce the concept of a probabilistic or p-bit, intermediate between the standard bits of digital electronics and the emerging q-bits of quantum computing. We show that low barrier magnets or LBM's provide a natural physical…

Emerging Technologies · Computer Science 2020-07-16 Kerem Y. Camsari , Brian M. Sutton , Supriyo Datta

Probabilistic bits (p-bits) are stochastic hardware elements whose output probability can be tuned by an input bias, offering a route to energy-efficient architectures that exploit, rather than suppress, fluctuations. Here we report p-bit…

Probabilistic bits (p-bits) have recently been employed in neural networks (NNs) as stochastic neurons with sigmoidal probabilistic activation functions. Nonetheless, there remain a wealth of other probabilistic activation functions that…

The slowing down of Moore's Law has led to a crisis as the computing workloads of Artificial Intelligence (AI) algorithms continue skyrocketing. There is an urgent need for scalable and energy-efficient hardware catering to the unique…

Emerging Technologies · Computer Science 2023-10-11 Shuvro Chowdhury , Kerem Y. Camsari

Probabilistic (p-) bits implemented with low energy barrier nanomagnets (LBMs) have recently gained attention because they can be leveraged to perform some computational tasks very efficiently. Although more error-resilient than Boolean…

Mesoscale and Nanoscale Physics · Physics 2020-03-10 Justine L. Drobitch , Supriyo Bandyopadhyay

Ongoing semiconductor scaling challenges and the rise of neuromorphic computing have sparked interest in exploring novel computing schemes to achieve higher power efficiency and computational capabilities. Probabilistic computing is one…

Emerging Technologies · Computer Science 2026-04-28 Xuejian Zhang , John Arnesh Divakaruni Daniel , Neil Dilley , Zhihong Chen , Joerg Appenzeller

A bit-quantum map relates probabilistic information for Ising spins or classical bits to quantum spins or qubits. Quantum systems are subsystems of classical statistical systems. The Ising spins can represent macroscopic two-level…

Quantum Physics · Physics 2019-10-23 C. Wetterich

Probabilistic computing has emerged as a viable approach to treat optimization problems. To achieve superior computing performance, the key aspect during computation is massive sampling and tuning on the probability states of each…

Applied Physics · Physics 2025-02-07 Yadi Wang , Bin Chen , Wenping Gao , Biying Ye , Chang Niu , Wenbin Wang , Yinyan Zhu , Weichao Yu , Hangwen Guo , Jian Shen

Digital computers store information in the form of bits that can take on one of two values 0 and 1, while quantum computers are based on qubits that are described by a complex wavefunction, whose squared magnitude gives the probability of…

Emerging Technologies · Computer Science 2021-10-14 Jan Kaiser , Supriyo Datta

In this work we showcase the potential of peptides as versatile scaffolds for quantum computing and molecular spintronics. In particular, we focus on lanthanide-binding tags, which were originally developed in the field of biotechnology for…

Computation in the past decades has been driven by deterministic computers based on classical deterministic bits. Recently, alternative computing paradigms and domain-based computing like quantum computing and probabilistic computing have…

Emerging Technologies · Computer Science 2021-10-01 Jan Kaiser , Risi Jaiswal , Behtash Behin-Aein , Supriyo Datta

Probabilistic (p-) computing, which leverages the stochasticity of its building blocks (p-bits) to solve a variety of computationally hard problems, has recently emerged as a promising physics-inspired hardware accelerator platform. A…

Disordered Systems and Neural Networks · Physics 2025-05-02 Sagnik Banerjee , Shiva T. Konakanchi , Supriyo Datta , Pramey Upadhyaya

Probabilistic computing is a novel computing scheme that offers a more efficient approach than conventional CMOS-based logic in a variety of applications ranging from optimization to Bayesian inference, and invertible Boolean logic. The…

Mesoscale and Nanoscale Physics · Physics 2024-06-18 John Daniel , Zheng Sun , Xuejian Zhang , Yuanqiu Tan , Neil Dilley , Zhihong Chen , Joerg Appenzeller

Molecular nanomagnets are compounds characterized by a high-spin magnetic core that is protected by organic ligands. They have recently gained attention as potential quantum information carriers in solid-state quantum computing platforms,…

Quantum Physics · Physics 2026-01-21 Alessandra Cammarata , Steve Campbell , Mauro Paternostro

In this paper we present a concrete design for a probabilistic (p-) computer based on a network of p-bits, robust classical entities fluctuating between -1 and +1, with probabilities that are controlled through an input constructed from the…

Emerging Technologies · Computer Science 2020-08-25 Brian Sutton , Rafatul Faria , Lakshmi A. Ghantasala , Risi Jaiswal , Kerem Y. Camsari , Supriyo Datta

On-chip micromagnets enable electrically controlled quantum gates on electron spin qubits. Extending the concept to a large number of qubits is challenging in terms of providing large enough driving gradients and individual addressability.…

Mesoscale and Nanoscale Physics · Physics 2023-04-12 Michele Aldeghi , Rolf Allenspach , Gian Salis

Binary stochastic neurons (BSNs) are excellent activators for machine learning. An ideal platform for implementing them are low- or zero-energy-barrier nanomagnets (LBMs) possessing in-plane anisotropy (e.g. circular or slightly elliptical…

Mesoscale and Nanoscale Physics · Physics 2023-02-28 Rahnuma Rahman , Supriyo Bandyopadhyay

The use of $d$-level qudits instead of two-level qubits can largely increase the power of quantum logic for many applications, ranging from quantum simulations to quantum error correction. Molecular Nanomagnets are ideal spin systems to…

Low-dimensional quantum magnetism presents a seemingly unlimited source of rich, intriguing physics. Yet, as realistic experimental representations are hard to come by, the field remains predominantly theoretical. In recent years,…

Mesoscale and Nanoscale Physics · Physics 2015-04-21 A Spinelli , M P Rebergen , A F Otte

It has recently been shown that a suitably interconnected network of tunable telegraphic noise generators or "p-bits" can be used to perform even precise arithmetic functions like a 32-bit adder. In this paper we use simulations based on…

Mesoscale and Nanoscale Physics · Physics 2017-04-13 Rafatul Faria , Kerem Yunus Camsari , Supriyo Datta
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