Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Faculty Publications Conference Paper Faculty Publications- Conference Papers Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Mukhopadhyay, Debarka; Bhattacharyya, Siddhartha; Plato, Jan; Zelinka, Ivan; Snasel, Vaclav Title A name given to the resource Development ofNew Fidelity Theorems inQuantum Communication Date A point or period of time associated with an event in the lifecycle of the resource 01-01-2026 Source A related resource from which the described resource is derived Lecture Notes in Networks and Systems;Volume;1508 LNNS;pp.405-417 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1007/978-981-96-8998-9_33" target="_blank" rel="noreferrer noopener">https://doi.org/10.1007/978-981-96-8998-9_33</a> <br /><br /><a href="https://www.scopus.com/pages/publications/105028250224?origin=resultslist" target="_blank" rel="noreferrer noopener">https://www.scopus.com/pages/publications/105028250224?origin=resultslist</a> Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Mukhopadhyay D., Department of Computer Science and Engineering, Christ University, Bangalore, India; Bhattacharyya S., VSB Technical University of Ostrava, Ostrava, Czech Republic; Plato J., VSB Technical University of Ostrava, Ostrava, Czech Republic; Zelinka I., VSB Technical University of Ostrava, Ostrava, Czech Republic; Snasel V., VSB Technical University of Ostrava, Ostrava, Czech Republic Description An account of the resource Fidelity estimates the closeness or degree of overlap between a pair of unknown quantum systems. In quantum information processing study, a primary task is to estimate the fidelity of a pure states pair in a 2-dimensional Hilbert space or between a mixed state, ?, and pure state existing in N dimensional Hilbert space while transmitting them through noisy environments. This paper suggests two theorems to estimate fidelity while proving and justifying them numerically. The first theorem computes fidelity between pure states and the second estimates fidelity between mixed and pure states. The mathematical basis of the theorems confirms accuracy in estimation while dealing with single- and multiqubit system environments. The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2026. Subject The topic of the resource Fidelity; No cloning theorem; Quantum computing; Quantum state; Qubits Publisher An entity responsible for making the resource available Springer Science and Business Media Deutschland GmbH Relation A related resource ISSN: 23673370; ISBN: 978-981968997-2; Language A language of the resource English Type The nature or genre of the resource Conference paper Rights Information about rights held in and over the resource Restricted Access; Hardcopy may be available in the library Format The file format, physical medium, or dimensions of the resource online