[Joint CQSE & NCTS Seminar] Quantum Resources Beyond Convexity for Quantum Technologies

Title: [Joint CQSE & NCTS Seminar] Quantum Resources Beyond Convexity for Quantum Technologies
Speaker: Dr. Jebarathinam Chellasamy (NCTS Physics)
Time: 2025/03/28 (Fri.) 14:30-15:30
Place: NCTS Physics Lecture Hall, 4F, Cosmology Hall, NTU
Online: https://nationaltaiwanuniversity-zbh.my.webex.com/nationaltaiwanuniversity-zbh.my/j.php?MTID=m2a963d31adcf732fcddcf95022ff7210
 

Abstract
Identifying what quantum-mechanical properties are a quantum resource to access a
superior performance in quantum technologies is a key question. Quantum advantages
for information processing were identified by different quantum resources, e.g.,
coherence and entanglement. The framework of quantum resource theory has been
applied to each of such quantum resources to analyze and understand them. All these
quantum resources have a convexity property for classicality. However, recognizing that
many physical resources are described by a non-convex set of free states, general
resource theories have been investigated to address the fundamental question of the
usefulness of quantum resources without a convexity assumption [1]. In this talk, I will
discuss the implication of classical randomness not being freely available for non-
convex quantum resources to quantum information processing. To this end, I will
present examples of quantum resources with and without convexity assumptions and
their quantum information applications. I will then present our research on non-convex
resources of quantum correlations for quantum technologies [2].

1. K. Kuroiwa, R. Takagi, G. Adesso, and H. Yamasaki, Phys. Rev. Lett. 132,150201 (2024).
2. C. Jebarathinam, H.-Y. Ku, H.-C. Cheng, and H.-S. Goan, arXiv:2410.04430 [quant-ph]
 
Biography
Jebarathinam Chellasamy got his Ph.D. from the Physics Department of the Indian Institute of
Science Education and Research Mohali. Dr. Jebarathinam’s main research interests are in
quantum foundations and quantum information. As a postdoc researcher in quantum information
and quantum foundations, he worked at the Physics Department of the Indian Institute of
Technology in Chennai, the Institute of Mathematical Sciences in Chennai, S. N. Bose National
Center for Basic Sciences in Kolkata, Physics Department of National Cheng Kung University
in Tainan and Center for Theoretical Physics of Polish Academy of Sciences in Warsaw.

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