Description
Crosstalk noise derives from phenomena in quantum devices which inhibit individual addressability or cause unintended interactions among qubits. It is widely considered one of the major problems to be solved for a quantum computing platform to operate at scales beyond one or two qubits. Despite this, detailed discussion of crosstalk is often neglected when quantum device performance is described both in the context of device benchmarking and individual algorithm execution. Additionally, while the potential for crosstalk exists in all quantum platforms, the mechanisms and severity of crosstalk between platforms vary significantly, increasing the barrier to entry associated with understanding and performing research on unfamiliar quantum platforms. While previous work focused on theoretical formalism or platform-specific details, we provide a comprehensive overview of crosstalk from quantum computing literature across a range of physical systems focusing on physical origins, methods of mitigation and known consequential security vulnerabilities. We describe multiple crosstalk mechanisms for all major quantum computing platforms, and how they are addressed through device design, tuning, and mitigation techniques. We also observe accelerating research regarding security implications, though many avenues remain for further exploration, especially for non-superconducting systems. This provides a comprehensive entry point for an audience interested in understanding and addressing the challenges arising from crosstalk phenomena in modern quantum computing systems.
| I am the presenting author | Yes |
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