AB - © 2017 IEEE. More and more quantum algorithms have been designed for solving problems in machine learning, database search and data analytics. An important problem then arises: how privacy can be protected when these algorithms are used on private data? For classical computing, the notion of differential privacy provides a very useful conceptual framework in which a great number of mechanisms that protect privacy by introducing certain noises into algorithms have been successfully developed. This paper defines a notion of differential privacy for quantum information processing. We carefully examine how the mechanisms using three important types of quantum noise, the amplitude/phase damping and depolarizing, can protect differential privacy. A composition theorem is proved that enables us to combine multiple privacy-preserving operations in quantum information processing. AU - Zhou, L AU - Ying, M DA - 2017/09/25 DO - 10.1109/CSF.2017.23 EP - 262 JO - Proceedings - IEEE Computer Security Foundations Symposium PY - 2017/09/25 SP - 249 TI - Differential Privacy in Quantum Computation Y1 - 2017/09/25 Y2 - 2026/05/28 ER -