期刊
JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS
卷 6, 期 6, 页码 S556-S559出版社
IOP PUBLISHING LTD
DOI: 10.1088/1464-4266/6/6/014
关键词
quantum state reconstruction; quantum homodyne tomography; maximum likelihood
I propose an iterative expectation maximization algorithm for reconstructing the density matrix of an optical ensemble from a set of balanced homodyne measurements. The algorithm applies directly to the acquired data, bypassing the intermediate step of calculating marginal distributions. The advantages of the new method are made manifest by comparing it with the traditional inverse Radon transformation technique.
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