Asian Journal of Physics Vol. 33, No 11 (2024) 683-688

Bell state discrimination and error correction

Manu Gupta1, Abdul Q Batin2, Rajiuddin S K2 and Prasanta K Panigrahi2
1Digital Transformation and IT-Shahi Exports Pvt Ltd, Bangalore–560 102, India
2Center for Quantum Science and Technology, Siksha‘O’Anusandhan University, Bhubaneswar-751 030, India

An ancilla-based single particle measurement scheme is illustrated for Bell state discrimination which does not lead to the collapse of the wave function. It enables the extraction of partial information, e.g., parity and phase independently, that generalizes to multi-particle entangled states of qubits, which also applied to qudits. It can be used for error correction in a quantum circuit architecture involving basic gates like Hadamard and Controlled-NOT. It helps unravel the syndrome operators and, what is more, in the multi-partite state that the individual constituents lack. © Anita Publications. All rights reserved.
Doi: 10.54955/AJP.33.11.2024.683-688
Keywords: Bell state discrimination, Nondestructive discrimination, Quantum error correction.

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Method: Single- anonymous; Screened for Plagiarism? Yes
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