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arXiv · 2410.17516

Selective continuous-variable quantum process tomography

Virginia Feldman·Ariel Bendersky
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Abstract

Quantum process tomography is a useful tool for characterizing quantum processes. This task is essential for the development of different areas, such as quantum information processing. In this work, we present a protocol for selective continuous-variable quantum process tomography. Our proposal allows one to selectively estimate any element of an unknown continuous-variable quantum process in the position representation, without requiring the complete reconstruction of the process. By resorting to controlled squeezing and translation operations, and adaptatively discretizing the process, a direct measure of an estimate of any process element can be obtained. Furthermore, we show, supported by numerical simulations, how the protocol can be used to partially reconstruct on a region a continuous-variable quantum process.

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Virginia Feldman, Ariel Bendersky. 2024-10-23. Selective continuous-variable quantum process tomography. https://doi.org/10.1103/physreva.111.042409

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