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Quantum-enhanced reconfigurable in-memory stochastic computing
Hong-Zhe Yang1,2, Jian-Peng Dou1,2, Feng Lu1,2
1Center for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of Photonics and Communications, Shanghai Jiao Tong University, Shanghai, China.
Light, Science & Applications
|March 19, 2026
Summary
This study demonstrates a novel quantum-enhanced in-memory computing system using room-temperature quantum memory. It accelerates computations via correlated photons and offers secure, stochastic results for advanced computing architectures.
Area of Science:
- Quantum Computing
- In-Memory Computing
- Stochastic Computing
Background:
- In-memory computing offers efficiency for parallel tasks but is limited to classical implementations.
- Exploring nonclassical approaches like quantum memory is crucial for advancing in-memory computing.
- Quantum memory's ability to manage quantum states provides unique advantages for computation.
Purpose of the Study:
- To demonstrate a quantum-enhanced, reconfigurable in-memory stochastic computing system.
- To leverage room-temperature quantum memory for novel computational capabilities.
- To explore the potential of nonclassical correlations in accelerating computing tasks.
Main Methods:
- Utilized a room-temperature quantum memory to generate correlated photons.
- Implemented in-memory stochastic computing by accumulating photon counts.
- Mapped diverse computing tasks to parallel photon count accumulations.
Main Results:
- Successfully demonstrated addition and multiplication operations through photon count accumulation.
- Achieved acceleration of multiple computing tasks via parallel processing.
- Ensured secure remote computation through stochastic results, hindering eavesdropping.
Conclusions:
- The developed system showcases a viable quantum-enhanced in-memory stochastic computing architecture.
- Nonclassical correlations significantly accelerate computing processes.
- This work may inspire future research in quantum-enhanced computing architectures and applications.
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