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About this paper
Koustubh Phalak, Avimita Chatterjee, Swaroop Ghosh
This paper from Penn State University offers a comprehensive and accessible survey of Quantum Random Access Memory (QRAM) architectures, detailing their fundamental principles, operational mechanisms, and proposed physical implementations. It classifies five distinct QRAM designs and outlines the current challenges and future directions for quantum memory development.
Key insights
- QRAM leverages quantum superposition to simultaneously access multiple memory locations, offering potential exponential speedups compared to classical RAM's single-address access.
- Diverse QRAM architectures exist, including Bucket-Brigade, Fanout, Flip-Flop, Qudits-based, and PQC-based designs, each with unique operational principles and trade-offs in efficiency and complexity.
- Scalability, noise resilience, and adherence to the no-cloning theorem remain core challenges for practical QRAM implementation, alongside specific issues like qudit instability.
Summary by alphaXiv.
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