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arXiv · 1705.00670

Experimental realization of nondestructive discrimination of Bell states using a five-qubit quantum computer

Mitali Sisodia·Abhishek Shukla·Anirban Pathak
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Abstract

A scheme for distributed quantum measurement that allows nondestructive or indirect Bell measurement was proposed by Gupta et al., (Int. J. Quant. Infor. \textbf{5} (2007) 627) and subsequently realized experimentally using an NMR-based three-qubit quantum computer by Samal et al., (J. Phys. B, \textbf{43} (2010) 095508). In the present work, a similar experiment is performed using the five-qubit super-conductivity-based quantum computer, which has been recently placed in cloud by IBM Corporation. The experiment confirmed that the Bell state can be constructed and measured in a nondestructive manner with a reasonably high fidelity. A comparison of the outcomes of this study and the results obtained earlier in the NMR-based experiment has also been performed. The study indicates that to make a scalable SQUID-based computer, errors by the gates (in the present technology) have to be reduced considerably.

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Mitali Sisodia, Abhishek Shukla, Anirban Pathak. 2017-05-01. Experimental realization of nondestructive discrimination of Bell states using a five-qubit quantum computer. https://doi.org/10.1016/j.physleta.2017.09.050

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