Experimental preparation of multiphoton-added coherent states of light

IF 6.6 1区 物理与天体物理 Q1 PHYSICS, APPLIED
Jiří Fadrný, Michal Neset, Martin Bielak, Miroslav Ježek, Jan Bílek, Jaromír Fiurášek
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Abstract

Conditional addition of photons represents a crucial tool for optical quantum state engineering and it forms a fundamental building block of advanced quantum photonic devices. Here we report on experimental implementation of the conditional addition of several photons. We demonstrate the addition of one, two, and three photons to input coherent states with various amplitudes. The resulting highly nonclassical photon-added states are completely characterized with time-domain homodyne tomography, and the nonclassicality of the prepared states is witnessed by the negativity of their Wigner functions. We experimentally demonstrate that the conditional addition of photons realizes approximate noiseless quantum amplification of coherent states with sufficiently large amplitude. We also investigate certification of the stellar rank of the generated multiphoton-added coherent states, which quantifies the non-Gaussian resources required for their preparation. Our results pave the way towards the experimental realization of complex optical quantum operations based on combination of multiple photon additions and subtractions.

Abstract Image

光的多光子相干态的实验制备
光子的条件相加是光量子态工程的重要工具,也是先进量子光子设备的基本组成部分。在此,我们报告了多个光子条件相加的实验实现情况。我们演示了在不同振幅的输入相干态上添加一个、两个和三个光子。我们用时域同源层析成像技术完全表征了由此产生的高度非经典光子相加态,其维格纳函数的负性证明了所制备态的非经典性。我们通过实验证明,光子的有条件添加实现了具有足够大振幅的相干态近似无噪声量子放大。我们还研究了所产生的多光子相干态的恒星等级认证,它量化了制备这些相干态所需的非高斯资源。我们的研究成果为实验实现基于多光子加减组合的复杂光量子操作铺平了道路。
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来源期刊
npj Quantum Information
npj Quantum Information Computer Science-Computer Science (miscellaneous)
CiteScore
13.70
自引率
3.90%
发文量
130
审稿时长
29 weeks
期刊介绍: The scope of npj Quantum Information spans across all relevant disciplines, fields, approaches and levels and so considers outstanding work ranging from fundamental research to applications and technologies.
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