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Experimental Demonstration of Quantum State Multi-meter and One-qubit Fingerprinting in a Single Quantum Device

Jiangfeng Du·Ping Zou·Daniel K. L. Oi·Xinhua Peng·L. C. Kwek·C. H. Oh·Artur Ekert
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Abstract

We experimentally demonstrate in NMR a quantum interferometric multi-meter for extracting certain properties of unknown quantum states without resource to quantum tomography. It can perform direct state determinations, eigenvalue/eigenvector estimations, purity tests of a quantum system, as well as the overlap of any two unknown quantum states. Using the same device, we also demonstrate one-qubit quantum fingerprinting.

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Jiangfeng Du, Ping Zou, Daniel K. L. Oi, Xinhua Peng, L. C. Kwek, C. H. Oh, Artur Ekert. 2004-12-08. Experimental Demonstration of Quantum State Multi-meter and One-qubit Fingerprinting in a Single Quantum Device. https://arxiv.org/abs/quant-ph/0411180

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