Tomographic markers and photon addition to coherent states of light: Comparison with experiment

Abstract

Photon addition to quantized light is of immense interest, both experimentally and theoretically. We identify a set of markers that play an important role in the context of photon addition to coherent states of light. These markers are directly computable from optical tomograms. We calculate the amplification gain due to photon addition, and the dependence of quadrature variances on relevant parameters, from the tomograms and compare them with results obtained after state reconstruction in a recent experiment. Our results match well with the fidelity plots reported by the experimenters. Our approach which circumvents state reconstruction could provide a viable procedure to identify specific aspects of photon addition to nonclassical light as well, from the tomograms themselves.

10 pages, 12 figures

References in corpus (10)

• Single-photon excitation of a coherent state: catching the elementary step of stimulated light emission
• Generating "squeezed" superpositions of coherent states using photon addition and subtraction
• Non-Gaussianity of quantum states: an experimental test on single-photon added coherent states
• Experimental preparation of multiphoton-added coherent states of light
• Production and applications of non-Gaussian quantum states of light
• Photon-by-photon quantum light state engineering
• Signatures of nonclassical effects in optical tomograms
• Sensing Single Photon in a Cat State
• Remote Phase Sensing by Coherent Single Photon Addition
• Optimal sensing of photon addition and subtraction on nonclassical light