Measurement-device agnostic quantum tomography

• URL: http://arxiv.org/abs/2407.13011v2
• Date: Mon, 22 Jul 2024 12:39:22 GMT
• Title: Measurement-device agnostic quantum tomography
• Authors: Robert Stárek, Martin Bielak, Miroslav Ježek,
• Abstract summary: We show that a mismatch between actual and assumed constituent measurements limits the accuracy of this characterization. We use these artifacts to detect and quantify the mismatch and gain information about the actual measurement operators.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Characterization of quantum states and devices is paramount to quantum science and technology. The characterization consists of individual measurements, which are required to be precisely known. A mismatch between actual and assumed constituent measurements limits the accuracy of this characterization. Here, we show that such a mismatch introduces reconstruction artifacts in quantum state tomography. We use these artifacts to detect and quantify the mismatch and gain information about the actual measurement operators. It consequently allows the mitigation of systematic errors in quantum measurement and state preparation.

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