Hardware-level Interfaces for Hybrid Quantum-Classical Computing Systems

• URL: http://arxiv.org/abs/2503.18868v1
• Date: Mon, 24 Mar 2025 16:43:42 GMT
• Title: Hardware-level Interfaces for Hybrid Quantum-Classical Computing Systems
• Authors: Konstantinos Rallis, Ioannis Liliopoulos, Evangelos Tsipas, Georgios D. Varsamis, Nikolaos Melissourgos, Ioannis G. Karafyllidis, Georgios Ch. Sirakoulis, Panagiotis Dimitrakis,
• Abstract summary: Hybrid Quantum-Classical computing systems is neither straightforward nor standardized while crucial for unlocking the real potential of QCs.<n>This study focuses on hardware approaches that enable effective hybrid quantum-classical operation.
• Score: 0.4697760524661718
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The technology of Quantum Computing (QC) is continuously evolving, as researchers explore new technologies and the public gains access to quantum computers with an increasing number of qubits. In addition, the research community and industry are increasingly interested in the potential use, application, and contribution of QCs to large-scale problems in the real world as a result of this technological enhancement. QCs operations are based on quantum mechanics, and their special properties are mainly exploited to solve computationally intensive problems in polynomial time, problems that are commonly unsolvable, even by High-Performance Computing systems (HPCs) in a feasible time. However, since QCs cannot perform as general-purpose computing machines, alternative computational approaches aiming to boost further their enormous computing abilities are requested, and their combination as an additional computing resource to HPC systems is considered as one of the most promising ones. In the proposed hybrid HPCs, the Quantum Processing Units (QPUs), similar to GPUs and CPUs, target specific problems that, through Quantum Algorithms, can exploit quantum properties like quantum entanglement and superposition to achieve substantial performance gains from the HPC point of view. This interconnection between classical HPC systems and QCs towards the creation of Hybrid Quantum-Classical computing systems is neither straightforward nor standardized while crucial for unlocking the real potential of QCs and achieving real performance improvements. The interconnection between the classical and quantum systems can be performed in the hardware, software (system), or application layer. In this study, a concise overview of the existing architectures for the interconnection interface between HPCs and QCs is provided, focusing on hardware approaches that enable effective hybrid quantum-classical operation.

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