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Encoding qubits into oscillators with atomic ensembles and squeezed light Motes, K, Baragiola, B, Gilchrist, A and Menicucci, N 2017, 'Encoding qubits into oscillators with atomic ensembles and squeezed light', Physical Review A, vol. 95, no. 5, 053819, pp. 1-14. Document type: Journal Article Collection: Journal Articles Attached Files Name Description MIMEType Size n2006074567.pdf Accepted Manuscript application/pdf 1.73MB Title Encoding qubits into oscillators with atomic ensembles and squeezed light Author(s) Motes, K Baragiola, B Gilchrist, A Menicucci, N Year 2017 Journal name Physical Review A Volume number 95 Issue number 5 Article Number 053819 Start page 1 End page 14 Total pages 14 Publisher American Physical Society Abstract The Gottesman-Kitaev-Preskill (GKP) encoding of a qubit within an oscillator provides a number of advantages when used in a fault-tolerant architecture for quantum computing, most notably that Gaussian operations suffice to implement all single- and two-qubit Clifford gates. The main drawback of the encoding is that the logical states themselves are challenging to produce. Here we present a method for generating optical GKP-encoded qubits by coupling an atomic ensemble to a squeezed state of light. Particular outcomes of a subsequent spin measurement of the ensemble herald successful generation of the resource state in the optical mode. We analyze the method in terms of the resources required (total spin and amount of squeezing) and the probability of success. We propose a physical implementation using a Faraday-based quantum nondemolition interaction. Subject Quantum Information, Computation and Communication Quantum Optics Keyword(s) quantum error-correction continuous-variables cluster states entanglement computation information photon field spin DOI - identifier 10.1103/PhysRevA.95.053819 Copyright notice © 2017 American Physical Society ISSN 2469-9934 Related Links Link Description http://purl.org/au-research/grants/arc/DE120102204 Grant/Project Information   https://dx.doi.org/10.1103/PhysRevA.95.053819 Link to Published Version   Versions Version Filter Type Thu, 29 Jun 2017, 09:31:19 EST Fri, 16 Nov 2018, 12:36:06 EST Wed, 20 Mar 2019, 12:33:38 EST Filtered Full Citation counts:   Cited 13 times in Thomson Reuters Web of Science Article | Citations Cited 0 times in Scopus Article Altmetric details: Access Statistics: 80 Abstract Views, 14 File Downloads  -  Detailed Statistics Created: Thu, 29 Jun 2017, 08:27:00 EST by Catalyst Administrator