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Generating Greenberger-Horne-Zeilinger states with squeezing and postselection

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dc.contributor.author Alexander, B
dc.contributor.author Bollinger, JJ
dc.contributor.author Uys, Hermann
dc.date.accessioned 2021-04-06T08:22:23Z
dc.date.available 2021-04-06T08:22:23Z
dc.date.issued 2020-06
dc.identifier.citation Alexander, B., Bollinger, J. & Uys, H. 2020. Generating Greenberger-Horne-Zeilinger states with squeezing and postselection. <i>Physical Review A, 101.</i> http://hdl.handle.net/10204/11940 en_ZA
dc.identifier.issn 2469-9926
dc.identifier.issn 2469-9934
dc.identifier.uri https://arxiv.org/abs/1911.12404
dc.identifier.uri DOI:10.1103/PhysRevA.101.062303
dc.identifier.uri http://hdl.handle.net/10204/11940
dc.description.abstract Many quantum state preparation methods rely on a combination of dissipative quantum state initialization followed by unitary evolution to a desired target state. Here we demonstrate the usefulness of quantum measurement as an additional tool for quantum state preparation. Starting from a pure separable multipartite state, a control sequence, which includes rotation, spin squeezing via one-axis twisting, quantum measurement, and postselection, generates highly entangled multipartite states, which we refer to as projected squeezed (PS) states. Through an optimization method, we then identify parameters required to maximize the overlap fidelity of the PS states with the maximally entangled Greenberger-Horne-Zeilinger (GHZ) states. The method leads to an appreciable decrease in the state preparation time of GHZ states for successfully postselected outcomes when compared to preparation through unitary evolution with one-axis twisting only. en_US
dc.format Abstract en_US
dc.language.iso en en_US
dc.source Physical Review A, 101 en_US
dc.subject Greenberger-Horne-Zeilinger en_US
dc.subject GHZ en_US
dc.subject Quantum state preparation methods en_US
dc.title Generating Greenberger-Horne-Zeilinger states with squeezing and postselection en_US
dc.type Article en_US
dc.description.pages 8pp en_US
dc.description.note ©2020 American Physical Society. Due to copyright restrictions, the attached PDF file contains the abstract of the full-text item. For access to the full-text item, please consult the publisher's website: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.101.062303 en_US
dc.description.cluster Manufacturing en_US
dc.identifier.apacitation Alexander, B., Bollinger, J., & Uys, H. (2020). Generating Greenberger-Horne-Zeilinger states with squeezing and postselection. <i>Physical Review A, 101</i>, http://hdl.handle.net/10204/11940 en_ZA
dc.identifier.chicagocitation Alexander, B, JJ Bollinger, and Hermann Uys "Generating Greenberger-Horne-Zeilinger states with squeezing and postselection." <i>Physical Review A, 101</i> (2020) http://hdl.handle.net/10204/11940 en_ZA
dc.identifier.vancouvercitation Alexander B, Bollinger J, Uys H. Generating Greenberger-Horne-Zeilinger states with squeezing and postselection. Physical Review A, 101. 2020; http://hdl.handle.net/10204/11940. en_ZA
dc.identifier.ris TY - Article AU - Alexander, B AU - Bollinger, JJ AU - Uys, Hermann AB - Many quantum state preparation methods rely on a combination of dissipative quantum state initialization followed by unitary evolution to a desired target state. Here we demonstrate the usefulness of quantum measurement as an additional tool for quantum state preparation. Starting from a pure separable multipartite state, a control sequence, which includes rotation, spin squeezing via one-axis twisting, quantum measurement, and postselection, generates highly entangled multipartite states, which we refer to as projected squeezed (PS) states. Through an optimization method, we then identify parameters required to maximize the overlap fidelity of the PS states with the maximally entangled Greenberger-Horne-Zeilinger (GHZ) states. The method leads to an appreciable decrease in the state preparation time of GHZ states for successfully postselected outcomes when compared to preparation through unitary evolution with one-axis twisting only. DA - 2020-06 DB - ResearchSpace DP - CSIR J1 - Physical Review A, 101 KW - Greenberger-Horne-Zeilinger KW - GHZ KW - Quantum state preparation methods LK - https://researchspace.csir.co.za PY - 2020 SM - 2469-9926 SM - 2469-9934 T1 - Generating Greenberger-Horne-Zeilinger states with squeezing and postselection TI - Generating Greenberger-Horne-Zeilinger states with squeezing and postselection UR - http://hdl.handle.net/10204/11940 ER - en_ZA
dc.identifier.worklist 24091 en_US


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