High-dimensional one-way quantum processing implemented on d-level cluster states

被引：0
作者：
Christian Reimer
Stefania Sciara
Piotr Roztocki
Mehedi Islam
Luis Romero Cortés
Yanbing Zhang
Bennet Fischer
Sébastien Loranger
Raman Kashyap
Alfonso Cino
Sai T. Chu
Brent E. Little
David J. Moss
Lucia Caspani
William J. Munro
José Azaña
Michael Kues
Roberto Morandotti
机构：
[1] Institut National de la Recherche Scientifique (INRS-EMT),John A. Paulson School of Engineering and Applied Sciences
[2] Harvard University,Department of Energy, Information Engineering and Mathematical Models
[3] University of Palermo,Engineering Physics Department
[4] Polytechnique Montreal,Electrical Engineering Department
[5] Polytechnique Montreal,Department of Physics and Material Science
[6] City University of Hong Kong,State Key Laboratory of Transient Optics and Photonics
[7] Xi’an Institute of Optics and Precision Mechanics,Centre for Micro Photonics
[8] Chinese Academy of Science,Institute of Photonics, Department of Physics
[9] Swinburne University of Technology,NTT Basic Research Laboratories and NTT Research Center for Theoretical Quantum Physics
[10] University of Strathclyde,School of Engineering
[11] NTT Corporation,Institute of Fundamental and Frontier Sciences
[12] National Institute of Informatics,undefined
[13] University of Glasgow ,undefined
[14] University of Electronic Science and Technology of China,undefined
[15] ITMO University,undefined
来源：
Nature Physics | 2019年 / 15卷
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摘要：
Taking advantage of quantum mechanics for executing computational tasks faster than classical computers1 or performing measurements with precision exceeding the classical limit2,3 requires the generation of specific large and complex quantum states. In this context, cluster states4 are particularly interesting because they can enable the realization of universal quantum computers by means of a ‘one-way’ scheme5, where processing is performed through measurements6. The generation of cluster states based on sub-systems that have more than two dimensions, d-level cluster states, provides increased quantum resources while keeping the number of parties constant7, and also enables novel algorithms8. Here, we experimentally realize, characterize and test the noise sensitivity of three-level, four-partite cluster states formed by two photons in the time9 and frequency10 domain, confirming genuine multi-partite entanglement with higher noise robustness compared to conventional two-level cluster states6,11–13. We perform proof-of-concept high-dimensional one-way quantum operations, where the cluster states are transformed into orthogonal, maximally entangled d-level two-partite states by means of projection measurements. Our scalable approach is based on integrated photonic chips9,10 and optical fibre communication components, thus achieving new and deterministic functionalities.
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页码：148 / 153
页数：5
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