Publication

Universal transformation of displacement operators and its application to homodyne tomography in differing relativistic reference frames

06/06/2019

Onoe, S; Ralph, TC

PHYSICAL REVIEW D, 99, 116001 (2019)

Universal transformation of displacement operators and its application to homodyne tomography in differing relativistic reference frames

In this paper, we study how a displacement of a quantum system appears under a change of relativistic reference frame. We introduce a generic method in which a displacement operator in one reference frame can be transformed into another reference frame. It is found that, when moving between noninertial reference frames, there can be distortions of phase information, modal structure, and amplitude. We analyze how these effects affect traditional homodyne detection techniques. We then develop an in-principle homodyne detection scheme which is robust to these effects, called the ideal homodyne detection scheme. We then numerically compare traditional homodyne detection with this in-principle method and illustrate regimes when the traditional homodyne detection schemes fail to extract full quantum information.

University: The University of Queensland

Authors Centre Participants: Mr. Sho Onoe, Prof. Tim C Ralph

Source: Physical Review D

Publication Type: Refereed Journal article

DOI Link: DOI Link

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