Manuel Le Gallo-Bourdeau  Manuel Le Gallo-Bourdeau photo         

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Staff Research Scientist
Zurich Research Laboratory, Zurich, Switzerland
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Professional Associations:  IEEE Electron Devices Society (EDS)

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2022

ML-HW Co-Design of Noise-Robust TinyML Models and Always-On Analog Compute-in-Memory Edge Accelerator
Chuteng Zhou, Fernando Garcia Redondo, Julian B\"uchel, Irem Boybat, Xavier Timoneda Comas, SR Nandakumar, Shidhartha Das, Abu Sebastian, Manuel Le Gallo, Paul N Whatmough
IEEE Micro, IEEE, 2022

Memristive technologies for data storage, computation, encryption, and radio-frequency communication
Mario Lanza, Abu Sebastian, Wei D Lu, Manuel Le Gallo, Meng-Fan Chang, Deji Akinwande, Francesco M Puglisi, Husam N Alshareef, Ming Liu, Juan B Roldan
Science 376(6597), eabj9979, American Association for the Advancement of Science, 2022

Mechanism and Impact of Bipolar Current Voltage Asymmetry in Computational Phase-Change Memory
Syed Ghazi Sarwat, Manuel Le Gallo, Robert L Bruce, Kevin Brew, Benedikt Kersting, Vara Prasad Jonnalagadda, Injo Ok, Nicole Saulnier, Matthew BrightSky, Abu Sebastian
Advanced Materials, 2201238, 2022

Experimental validation of state equations and dynamic route maps for phase change memristive devices
Francesco Marrone, Jacopo Secco, Benedikt Kersting, Manuel Le Gallo, Fernando Corinto, Abu Sebastian, Leon O Chua
Scientific Reports 12(1), 1--10, Nature Publishing Group, 2022

HERMES-core—a 1.59-TOPS/mm 2 PCM on 14-nm CMOS in-memory compute core using 300-ps/LSB linearized CCO-based ADCs
Riduan Khaddam-Aljameh, Milos Stanisavljevic, Jordi Fornt Mas, Geethan Karunaratne, Matthias Br\"andli, Feng Liu, Abhairaj Singh, Silvia M M\"uller, Urs Egger, Anastasios Petropoulos, others
IEEE Journal of Solid-State Circuits 57(4), 1027--1038, IEEE, 2022

MNEMOSENE: Tile Architecture and Simulator for Memristor-based Computation-in-memory
Mahdi Zahedi, Muah Abu Lebdeh, Christopher Bengel, Dirk Wouters, Stephan Menzel, Manuel Le Gallo, Abu Sebastian, Stephan Wong, Said Hamdioui
ACM Journal on Emerging Technologies in Computing Systems (JETC) 18(3), 1--24, ACM New York, NY, 2022

Precision of bit slicing with in-memory computing based on analog phase-change memory crossbars
Manuel Le Gallo, SR Nandakumar, Lazar Ciric, Irem Boybat, Riduan Khaddam-Aljameh, Charles Mackin, Abu Sebastian
Neuromorphic Computing and Engineering 2(1), 014009, IOP Publishing, 2022

Optimised weight programming for analogue memory-based deep neural networks
Charles Mackin, Malte J Rasch, An Chen, Jonathan Timcheck, Robert L Bruce, Ning Li, Pritish Narayanan, Stefano Ambrogio, Manuel Le Gallo, SR Nandakumar, others
Nature communications 13(1), 1--12, Nature Publishing Group, 2022

2022 roadmap on neuromorphic computing and engineering
Dennis V Christensen, Regina Dittmann, Bernabe Linares-Barranco, Abu Sebastian, Manuel Le Gallo, Andrea Redaelli, Stefan Slesazeck, Thomas Mikolajick, Sabina Spiga, Stephan Menzel, others
Neuromorphic Computing and Engineering 2(2), 022501, IOP Publishing, 2022


2021

Temperature sensitivity of analog in-memory computing using phase-change memory
I Boybat, B Kersting, S Ghazi Sarwat, X Timoneda, RL Bruce, M BrightSky, M Le Gallo, A Sebastian
2021 IEEE International Electron Devices Meeting (IEDM), pp. 28--3

Phase-Change Memory as a Memristive System: The State Equations and Dynamic Route Maps
Francesco Marrone, Jacopo Secco, Benedikt Kersting, Manuel Le Gallo, Fernando Corinto, Abu Sebastian, Leon Ong Chua
2021

HERMES Core--A 14nm CMOS and PCM-based In-Memory Compute Core using an array of 300ps/LSB Linearized CCO-based ADCs and local digital processing
Riduan Khaddam-Aljameh, Milos Stanisavljevic, J Fornt Mas, Geethan Karunaratne, Matthias Braendli, Femg Liu, Abhairaj Singh, Silvia M M\"uller, Urs Egger, Anastasios Petropoulos, others
2021 Symposium on VLSI Circuits, pp. 1--2

A Multi-Memristive Unit-Cell Array with Diagonal Interconnects for In-Memory Computing
Riduan Khaddam-Aljameh, Michele Martemucci, Benedikt Kersting, Manuel Le Gallo, Robert L. Bruce, Matthew BrightSky, Abu Sebastian
IEEE Transactions on Circuits and Systems Ii-express Briefs 68(12), 3522-3526, IEEE, 2021
Abstract   crossbar switch, diagonal, cmos, in memory processing, transistor, time complexity, multiplication, electronic engineering, limit, computer science

Accurate weight mapping in a multi-memristive synaptic unit
M. Martemucci, B. Kersting, R. Khaddam-Aljameh, I. Boybat, S. R. Nandakumar, U. Egger, M. Brightsky, R. L. Bruce, M. Le Gallo, A. Sebastian
IEEE International Symposium on Circuits and Systems (ISCAS), 2021
Abstract

Measurement of onset of structural relaxation in melt-quenched phase change materials
Benedikt Kersting, Syed Ghazi Sarwat, Manuel Le Gallo, Kevin Brew, Sebastian Walfort, Nicole Saulnier, Martin Salinga, and Abu Sebastian
Advanced Functional Materials 31(2104422), Wiley, 2021

A Flexible and Fast PyTorch Toolkit for Simulating Training and Inference on Analog Crossbar Arrays
Malte J. Rasch, Diego Moreda, Tayfun Gokmen, Manuel Le Gallo, Fabio Carta, Cindy Goldberg, Kaoutar El Maghraoui, Abu Sebastian, Vijay Narayanan
IEEE International Conference on Artificial Intelligence Circuits and Systems, 2021
Abstract

Robust high-dimensional memory-augmented neural networks
Geethan Karunaratne, Manuel Schmuck, Manuel Le Gallo, Giovanni Cherubini, Luca Benini, Abu Sebastian, Abbas Rahimi
Nature Communications 12(1), 2468, 2021
Abstract

Energy Efficient In-memory Hyperdimensional Encoding for Spatio-temporal Signal Processing
Geethan Karunaratne, Manuel Le Gallo, Michael Hersche, Giovanni Cherubini, Luca Benini, Abu Sebastian, Abbas Rahimi
IEEE Transactions on Circuits and Systems II: Express Briefs, 1-1, 2021
Abstract

Mushroom-Type phase change memory with projection liner: An array-level demonstration of conductance drift and noise mitigation
Robert L. Bruce, Syed Ghazi Sarwat, Irem Boybat, C-W. Cheng, Wanki Kim, S. R. Nandakumar, Charles Mackin et al
IEEE International Reliability Physics Symposium (IRPS) , 2021

HERMES Core - A 14nm CMOS and PCM-based In-Memory Compute Core using an array of 300ps/LSB Linearized CCO-based ADCs and local digital processing
R. Khaddam-Aljameh, M. Stanisavljevic, J. Fornt Mas, G. Karunaratne, M. Braendli, F. Liu, A. Singh, S. M. Muller, U. Egger, A. Petropoulos, T. Antonakopoulos, K. Brew, S. Choi, I. Ok, F. L. Lie, N. Saulnier, V. Chan, I. Ahsan, V. Narayanan, S. R. Nandakumar, M. Le Gallo, P. A. Francese, A. Sebastian, E. Eleftheriou
2021 Symposium on VLSI Technology
Abstract   cmos, phase change memory, mnist database, very large scale integration, least significant bit, computational science, tops, deep learning, process control, computer science, artificial intelligence

Parallel convolutional processing using an integrated photonic tensor core
J. Feldmann, N. Youngblood, M. Karpov, H. Gehring, X. Li, M. Stappers, M. Le Gallo, X. Fu, A. Lukashchuk, A. S. Raja, J. Liu, C. D. Wright, A. Sebastian*, T. J. Kippenberg*, W. H. P. Pernice*, H. Bhaskaran*
Nature589, 52-58, 2021
Abstract


2020

Beyond von--Neumann Computing—Engineering Artificial Synapses for In--Memory Computing
Valeria Bragaglia, Benedikt Kersting, Prasad Jonnalagadda, Antonio La Porta, Daniel Jubin, Diana Davila, Iason Giannopoulos, Manuel Le Gallo, Ghazi Syed, Folkert Horst, others
Materials Research Society (MRS) Spring Meeting, 2020

An overview of phase-change memory device physics
Manuel Le Gallo, Abu Sebastian
Journal of Physics D: Applied Physics, 2020
Abstract

State dependence and temporal evolution of resistance in projected phase change memory
Benedikt Kersting*, Vladimir Ovuka, Vara Prasad Jonnalagadda, Marilyne Sousa, Valeria Bragaglia, Syed Ghazi Sarwat, Manuel Le Gallo, Martin Salinga & Abu Sebastian*
Scientific Reports, 2020
Abstract

Temperature Compensation Schemes for In-Memory Computing using Phase-Change Memory
Iason Giannopoulos, Manuel Le Gallo, Vara Prasad Jonnalagadda, Evangelos Eleftheriou, Abu Sebastian
2020 2nd IEEE International Conference on Artificial Intelligence Circuits and Systems (AICAS), pp. 286-290
Abstract   temperature measurement, resistive touchscreen, resistive random access memory, phase change memory, multiplier, in memory processing, explosive material, electronic engineering, crossbar switch, computer science

Experimental Demonstration of Supervised Learning in Spiking Neural Networks with Phase-Change Memory Synapses
S. R. Nandakumar, Irem Boybat, Manuel Le Gallo, Evangelos Eleftheriou, Abu Sebastian*, Bipin Rajendran*
Scientific Reports, 2020
Abstract

Memory devices and applications for in-memory computing
Abu Sebastian, Manuel Le Gallo, Riduan Khaddam-Aljameh, Evangelos Eleftheriou
Nature Nanotechnology, 2020
Abstract

In-memory hyperdimensional computing
Geethan Karunaratne, Manuel Le Gallo, Giovanni Cherubini, Luca Benini, Abbas Rahimi*, Abu Sebastian*
Nature Electronics, 2020
Abstract

Mixed-precision deep learning based on computational memory
SR Nandakumar, Manuel Le Gallo, Christophe Piveteau, Vinay Joshi, Giovanni Mariani, Irem Boybat, Geethan Karunaratne, Riduan Khaddam-Aljameh, Urs Egger, Anastasios Petropoulos, others
Frontiers in Neuroscience14, 406, 2020

Accurate deep neural network inference using computational phase-change memory
Vinay Joshi, Manuel Le Gallo*, Simon Haefeli, Irem Boybat, S. R. Nandakumar, Christophe Piveteau, Martino Dazzi, Bipin Rajendran, Abu Sebastian*, Evangelos Eleftheriou
Nature Communications, 2020
Abstract


2019

Phase-change memory enables energy-efficient brain-inspired computing
Manuel Le Gallo, Abu Sebastian, Evangelos Eleftheriou
2019 Device Research Conference (DRC), pp. 197-198
Abstract   scalability, physics, phase change memory, electronic engineering, efficient energy use, computing systems, computer architecture, cognitive computing, cognition

Computational phase-change memory: beyond von Neumann computing
Abu Sebastian, Manuel Le Gallo, Evangelos Eleftheriou
Journal of Physics D: Applied Physics, 2019
Abstract

Training Neural Networks using Memristive Devices with Nonlinear Accumulative Behavior
Christophe Piveteau*, Manuel Le Gallo, Riduan Khaddam-Aljameh, Abu Sebastian*
Proc. International Memory Workshop, 2019
Abstract

Phase-change memory models for deep learning training and inference
S. R. Nandakumar, I. Boybat, V. Joshi, C. Piveteau, M. Le Gallo, B. Rajendran, A. Sebastian, E. Eleftheriou
IEEE International Conference on Electronics Circuits and Systems (ICECS), 2019

Multi-ReRAM synapses for artificial neural network training
I. Boybat, C. Giovinazzo, E. Shahrabi, I. Krawczuk, I. Giannopoulos, C. Piveteau, M. Le Gallo, C. Ricciardi, A. Sebastian, E. Eleftheriou, Y. Leblebici
IEEE International Symposium on Circuits and Systems (ISCAS), 2019

Applications of Computation-In-Memory Architectures based on Memristive Devices
Said Hamdioui, Abu Sebastian, Sandeep Pande, Shidhartha Das, Geethan Karunaratne, Hoang Anh Du Nguyen, Manuel Le Gallo et al.
Proceedings of DATE, 2019
Abstract

Deep learning acceleration based on in-memory computing
E. Eleftheriou, M. L. Gallo, S. R. Nandakumar, C. Piveteau, I. Boybat, V. Joshi, R. Khaddam-Aljameh, M. Dazzi, I. Giannopoulos, G. Karunaratne, B. Kersting, M. Stanisavljevic, V. P. Jonnalagadda, N. Ioannou, K. Kourtis, P. A. Francese, A. Sebastian
IBM Journal of Research and Development 63(6), 7:1-7:16, 2019

Computational memory-based inference and training of deep neural networks
A. Sebastian, I. Boybat, M. Dazzi, I. Giannopoulos, V. Jonnalagadda, V. Joshi, G. Karunaratne, B. Kersting, R. Khaddam-Aljameh, S. R. Nandakumar, A. Petropoulos, C. Piveteau, T. Antonakopoulos, B. Rajendran, M. Le Gallo, E. Eleftheriou
VLSI Symposium, 2019

In-memory computing on a photonic platform
Carlos Rios, Nathan Youngblood, Zengguang Cheng, Manuel Le Gallo, Wolfram H. P. Pernice, C. David Wright, Abu Sebastian*, Harish Bhaskaran*
Science Advances 5(2), 2019
Abstract


2018

8-bit Precision In-Memory Multiplication with Projected Phase-Change Memory
I. Giannopoulos, A. Sebastian, M. Le Gallo, V.P. Jonnalagadda, M. Sousa, M.N. Boon, E. Eleftheriou
2018 IEEE International Electron Devices Meeting (IEDM)
Abstract   topology, scalar multiplication, resistive random access memory, physics, phase change memory, multiplication, electronic engineering, electrical measurements, computation, artificial neural network, 8 bit

Impact of conductance drift on multi-PCM synaptic architectures
I. Boybat, S. R. Nandakumar, M. Le Gallo, B. Rajendran, Y. Leblebici, A. Sebastian, E. Eleftheriou
Non-Volatile Memory Technology Symposium (NVMTS), 2018

Collective Structural Relaxation in PhaseChange Memory Devices
Manuel Le Gallo, Daniel Krebs, Federico Zipoli, Martin Salinga, Abu Sebastian
Advanced electronic materials 4(9), 2018
resistance drift, phase change memory, non volatile memory, materials science, condensed matter physics

Compressed Sensing With Approximate Message Passing Using In-Memory Computing
M. Le Gallo, A. Sebastian, G. Cherubini, H. Giefers, E. Eleftheriou
IEEE Transactions on Electron Devices 65(10), 4304-4312, 2018

Neuromorphic computing with multi-memristive synapses
Irem Boybat, Manuel Le Gallo, S. R. Nandakumar, Timoleon Moraitis, Thomas Parnell, Tomas Tuma, Bipin Rajendran, Yusuf Leblebici, Abu Sebastian & Evangelos Eleftheriou
Nature Communications 9(1), 2514, 2018

Monatomic phase change memory
Martin Salinga*, Benedikt Kersting, Ider Ronneberger, Vara Prasad Jonnalagadda, Xuan Thang Vu, Manuel Le Gallo, Iason Giannopoulos, Oana Cojocaru-Miredin, Riccardo Mazzarello, Abu Sebastian*
Nature Materials17, 681-685, 2018
Abstract

A phase-change memory model for neuromorphic computing
S. R. Nandakumar, M. Le Gallo, I. Boybat, B. Rajendran, A. Sebastian, and E. Eleftheriou
Journal of Applied Physics, 2018

Tutorial: Brain-inspired computing using phase-change memory devices
Abu Sebastian*, Manuel Le Gallo, Geoffrey W. Burr, Sangbum Kim, Matthew BrightSky, and Evangelos Eleftheriou
Journal of Applied Physics 124(11), 111101, 2018
Abstract

Mixed-precision architecture based on computational memory for training deep neural networks
Nandakumar S. R.*, Manuel Le Gallo, Irem Boybat, Bipin Rajendran, Abu Sebastian*, Evangelos Eleftheriou
The International Symposium on Circuits and Systems (ISCAS) , 2018
Abstract

Mixed-precision in-memory computing
Manuel Le Gallo*, Abu Sebastian*, Roland Mathis, Matteo Manica, Heiner Giefers, Tomas Tuma, Costas Bekas, Alessandro Curioni, Evangelos Eleftheriou
Nature Electronics1, 246-253, 2018
Abstract


2017

Supervised Learning in Spiking Neural Networks with MLC PCM Synapses
S. R. Nandakumar, I. Boybat, M. Le Gallo, A. Sebastian, B. Rajendran, and E. Eleftheriou
Device Research Conference (DRC), 2017

Memristive Effects in Oxygenated Amorphous Carbon Nanodevices
T. A. Bachmann, W. W. Koelmans, V. P. Jonnalagadda, M. Le Gallo, C. A. Santini, A. Sebastian, E. Eleftheriou, M. F. Craciun, C. D. Wright
Nanotechnology, 2017
Abstract

Fatiguing STDP: Learning from Spike-Timing Codes in the Presence of Rate Codes
T. Moraitis, A. Sebastian, I. Boybat, M. Le Gallo, T. Tuma, and E. Eleftheriou
International Joint Conference on Neural Networks (IJCNN) , 2017

Compressed Sensing Recovery using Computational Memory
M. Le Gallo*, A. Sebastian*, G. Cherubini, H. Giefers, and E. Eleftheriou
Proc. IEEE International Electron Devices Meeting, 2017
Abstract

Mixed-precision training of deep neural networks using computational memory
S. R. Nandakumar*, M. Le Gallo, I. Boybat, B. Rajendran, A. Sebastian*, and E. Eleftheriou
ArXiv, 2017
Abstract

Temporal correlation detection using computational phase-change memory
Abu Sebastian, Tomas Tuma, Nikolaos Papandreou, Manuel Le Gallo, Lukas Kull, Thomas Parnell, Evangelos Eleftheriou
Nature Communications 8(1), 1115, Nature Publishing Group, 2017

Stochastic weight updates in phase-change memory-based synapses and their influence on artificial neural networks
I. Boybat, M. Le Gallo, T. Moraitis, Y. Leblebici, A. Sebastian, and E. Eleftheriou
Conference on PhD Research in Microelectronics and Electronics (PRIME) , 2017

An efficient synaptic architecture for artificial neural networks
I. Boybat, M. Le Gallo, S.R. Nandakumar, T. Moraitis, T. Tuma, B. Rajendran, Y. Leblebici, A. Sebastian, and E. Eleftheriou
Non-Volatile Memory Technology Symposium (NVMTS), 2017

Neuromorphic computing using non-volatile memory
Burr, Geoffrey W and Shelby, Robert M and Sebastian, Abu and Kim, Sangbum and Kim, Seyoung and Sidler, Severin and Virwani, Kumar and Ishii, Masatoshi and Narayanan, Pritish and Fumarola, Alessandro and others
Advances in Physics: X 2(1), 89--124, Taylor & Francis, 2017
Abstract


2016

The complete time/temperature dependence of I-V drift in PCM devices
Manuel Le Gallo, Abu Sebastian, Daniel Krebs, Milos Stanisavljevic and Evangelos Eleftheriou
Proceedings of the International Reliability Physics Symposium (IRPS), 2016
Abstract

Detecting Correlations Using Phase-Change Neurons and Synapses
Tuma, Tomas and Le Gallo, Manuel and Sebastian, Abu and Eleftheriou, Evangelos
IEEE Electron Device Letters 37(9), 1238--1241, IEEE, 2016
Abstract

Inherent stochasticity in phase-change memory devices
Le Gallo, Manuel and Tuma, Tomas and Zipoli, Federico and Sebastian, Abu and Eleftheriou, Evangelos
Solid-State Device Research Conference (ESSDERC), 2016 46th European, pp. 373--376
Abstract

Evidence for thermally assisted threshold switching behavior in nanoscale phase-change memory cells
Manuel Le Gallo, Aravinthan Athmanathan, Daniel Krebs, Abu Sebastian
Journal of Applied Physics 119(2), 025704, 2016

Stochastic phase-change neurons
Tuma, Tomas and Pantazi, Angeliki and Le Gallo, Manuel and Sebastian, Abu and Eleftheriou, Evangelos
Nature nanotechnology 11(8), 693--699, Nature Research, 2016
Abstract


2015

A finite-element thermoelectric model for phase-change memory devices
Athmanathan, Aravinthan and Krebs, Daniel and Sebastian, Abu and Le Gallo, Manuel and Pozidis, Haralampos and Eleftheriou, Evangelos
2015 International Conference on Simulation of Semiconductor Processes and Devices (SISPAD), pp. 289--292

A collective relaxation model for resistance drift in phase change memory cells
Sebastian, Abu and Krebs, Daniel and Le Gallo, Manuel and Pozidis, Haralampos and Eleftheriou, Evangelos
2015 IEEE International Reliability Physics Symposium, pp. MY--5

High-field electrical transport in amorphous phase-change materials
Matthias Kaes, Manuel Le Gallo, Abu Sebastian, Martin Salinga, Daniel Krebs
Journal of Applied Physics 118(13), 135707, 2015

Subthreshold electrical transport in amorphous phase-change materials
Manuel Le Gallo, Matthias Kaes, Abu Sebastian, Daniel Krebs
New Journal of Physics 17(9), 093035, 2015


2014

Crystal growth within a phase change memory cell
Abu Sebastian, Manuel Le Gallo, Daniel Krebs
Nature communications 5(4314), 2014


2013

BIGT control optimisation for overall loss reduction
Papadopoulos, Charalampos and Storasta, Liutauras and Le Gallo, Manuel and Rahimo, Munaf and Schnell, Raffael and Baschnagel, Andreas
Power Electronics and Applications (EPE), 2013 15th European Conference on, pp. 1--10
Abstract