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# Open Problem: Learning Quantum Circuits with Queries

*Proceedings of The 28th Conference on Learning Theory*, PMLR 40:1767-1769, 2015.

#### Abstract

We pose an open problem on the complexity of learning the behavior of a quantum circuit with value injection queries. We define the learning model for quantum circuits and give preliminary results. Using the test-path lemma of Angluin et al. (2009a), we show that new ideas are likely needed to tackle value injection queries for the quantum setting.