Generation of reconfigurable hypercubic graph states in one to four dimensions in a simple optical system.

Zhifan Zhou, Luís E E de Araujo, Matt DiMario, Jing Su, Meng-Chang Wu, B E Anderson, Jie Zhao, Kevin M Jones, Paul D Lett

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Article in Science advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Zhifan ZhouJoint Quantum Institute, National Institute of Standards and Technology and the University of Maryland, College Park, MD 20742, USA.ORCID 0000-0001-6323-6756

Luís E E de AraujoJoint Quantum Institute, National Institute of Standards and Technology and the University of Maryland, College Park, MD 20742, USA.

Matt DiMarioJoint Quantum Institute, National Institute of Standards and Technology and the University of Maryland, College Park, MD 20742, USA.

Jing SuJoint Quantum Institute, National Institute of Standards and Technology and the University of Maryland, College Park, MD 20742, USA.ORCID 0000-0002-5321-1974

Meng-Chang WuJoint Quantum Institute, National Institute of Standards and Technology and the University of Maryland, College Park, MD 20742, USA.ORCID 0000-0001-8556-7898

B E AndersonDepartment of Physics, American University, Washington DC 20016, USA.

Jie ZhaoJoint Quantum Institute, National Institute of Standards and Technology and the University of Maryland, College Park, MD 20742, USA.ORCID 0000-0002-7382-1964

Kevin M JonesDepartment of Physics, Williams College, Williamstown, MA 01267, USA.ORCID 0000-0003-3604-6089

Paul D LettJoint Quantum Institute, National Institute of Standards and Technology and the University of Maryland, College Park, MD 20742, USA.ORCID 0000-0002-7929-5547

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6 · The paper itself

Abstract

Entangled graph states can be used for quantum sensing and computing applications. In some measurement-based quantum computing schemes, error correction will require the construction of cluster states in at least three dimensions. Here, we generate one-, two-, three-, and four-dimensional optical frequency-mode graph states, which would become cluster states at higher squeezing levels than obtained here, by sending broadband two-mode vacuum-squeezed light through an electro-optical modulator (EOM) driven with multiple frequencies. We create the squeezed light using four-wave mixing in Rb atomic vapor and mix the sideband frequencies (qumodes) using an EOM, producing a pattern of entanglement correlations that constitute continuous-variable graph states containing up to several hundred qumodes. We verify the entanglement structure by using homodyne measurements to construct the covariance matrices and evaluate the nullifiers. This technique enables scaling of optical cluster states to multiple dimensions without increasing loss.

Identifiers

PMID42030396

DOI10.1126/sciadv.aea8426

PMCPMC13108543

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