Coherence Rather Than Error Rate Governs Privacy in Multi-Tenant Quantum Computing

arXiv:2609.34411 · quant-ph, cs.CR · Submitted 2026-09-28 · Read on arXiv

quant-ph, cs.CR

Submitted: 2026-09-28

Updated: 2026-10-01

Comments: Added an additional experiment

Code: https://github.com/farhadfarokhigit/multi-tenant_quantum_leakage

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Information Leakage — 31× in this paper · explained in 2 episodes
• Fidelity — 6× in this paper · explained in 2 episodes
• Calibration — 3× in this paper · explained in 7 episodes
• Trace — 3× in this paper · explained in 2 episodes
• Benchmarking — 2× in this paper · explained in 3 episodes
• Decoupling — 2× in this paper · explained in 2 episodes
• Differential Privacy — 2× in this paper · explained in 4 episodes
• Entanglement — 1× in this paper · explained in 3 episodes
• Lindblad master equation — 1× in this paper · explained in 2 episodes
• Quantum Circuits — 1× in this paper · explained in 2 episodes
• Trace Distance — 1× in this paper · explained in 3 episodes

Sources

• Crosstalk-induced Side Channel Threats in Multi-Tenant NISQ Computers
• SWAP Attack: Stealthy Side-Channel Attack on Multi-Tenant Quantum Cloud System
• Hardware-Agnostic Modeling of Quantum Side-Channel Leakage via Conditional Dynamics and Learning from Full Correlation Data
• Maximal quantum leakage: operational interpretation and quantum channel analysis
• When Does Quantum Differential Privacy Compose?

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