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Conference on Lasers and Electro-Optics

Experimental preparation of Gottesman-Kitaev-Preskill states by photon-number-resolving detection

Miller Eaton, Rajveer Nehra, Olivier Pfister

Published May 5, 2019• 0 citations
Publisher

Abstract

We propose to expand “Fock state filtering” to photon-number-resolving detection and apply it to the generation of displaced single-photon states, cat states, and Gottesman-Kitaev-Preskill ancillas. © 2019 The Author(s)
DOI
10.23919/cleo.2019.8749628

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Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text M. Eaton, R. Nehra, and O. Pfister, "Experimental preparation of Gottesman-Kitaev-Preskill states by photon-number-resolving detection," in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2019), paper FTh4D.5. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Large-amplitude squeezed cat states and high-quality Gottesman-Kitaev-Preskill (GKP) states are essential for effective quantum error correction, yet their optical preparation has been hindered by challenges such as low success probabilities, small amplitudes, and insufficient squeezing. Addressing these limitations, our research introduces scalable optical schemes for the deterministic preparation of large-amplitude squeezed cat states from photon-number states. Fock states have the benefit of producing consistent cat states across all measurement outcomes and intrinsically provides a degree of squeezing. Notably, these squeezed cat states facilitate the deterministic generation of high-quality approximate GKP states via "breeding," showing that GKP error correction in optics is technically feasible in near-term experiments. Our schemes allow fault-tolerant quantum computation through the use of GKP error correction.