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Experimental realization of a controlled-NOT gate with four-photon six-qubit cluster states

We experimentally demonstrate an optical controlled-NOT (CNOT) gate with arbitrary single inputs based on a 4-photon 6-qubit cluster state entangled both in polarization and spatial modes. We first generate the 6-qubit state, and then, by performing single-qubit measurements, the CNOT gate is applie...

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Bibliographic Details
Main Authors: Gao, Wei-Bo (Author) , Xu, Ping (Author) , Yao, Xing-Can (Author) , Gühne, Otfried (Author) , Cabello, Adán (Author) , Lu, Chao-Yang (Author) , Peng, Cheng-Zhi (Author) , Chen, Zeng-Bing (Author) , Pan, Jian-Wei (Author)
Format: Article (Journal)
Language:English
Published: 13 January 2010
In: Physical review letters
Year: 2010, Volume: 104, Issue: 2, Pages: 1-4
ISSN:1079-7114
DOI:10.1103/PhysRevLett.104.020501
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.104.020501
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.104.020501
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Author Notes:Wei-Bo Gao, Ping Xu, Xing-Can Yao, Otfried Gühne, Adán Cabello, Chao-Yang Lu, Cheng-Zhi Peng, Zeng-Bing Chen, and Jian-Wei Pan
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Summary:We experimentally demonstrate an optical controlled-NOT (CNOT) gate with arbitrary single inputs based on a 4-photon 6-qubit cluster state entangled both in polarization and spatial modes. We first generate the 6-qubit state, and then, by performing single-qubit measurements, the CNOT gate is applied to arbitrary single input qubits. To characterize the performance of the gate, we estimate its quantum process fidelity and prove its entangling capability. In addition, our results show that the gate cannot be reproduced by local operations and classical communication. Our experiment shows that such hyper-entangled cluster states are promising candidates for efficient optical quantum computation.
Item Description:Gesehen am 10.10.2023
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.104.020501

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