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Kaushik Seshadreesan

University of Pittsburgh
Informatics and Networked Systems
Ph.D., Louisiana State University, 2015
Research Summary

Kaushik’s research broadly lies in quantum information science and technologies, spanning quantum information theory, quantum sensing, quantum communications, and quantum computation. He is currently primarily interested in quantum communication networks. As quantum technologies continue to grow and mature, interconnecting quantum gadgets such as quantum sensors or quantum computers is key to realizing their full potential. This requires the ability to communicate quantum information reliably and efficiently over such quantum networks. Kaushik is interested in addressing research questions and challenges that lie across the different layers of a full quantum networking stack towards realizing the future quantum internet.


Title Position Email
Nitish Kumar Chandra Graduate Student
Priyam Srivastava Graduate Student
Most Cited Publications

"Quantum Optical Technologies for Metrology, Sensing, and Imaging." Jonathan P. Dowling and Kaushik P. Seshadreesan. OSA Publishing.
"Parity detection achieves the Heisenberg limit in interferometry with coherent mixed with squeezed vacuum light." Kaushik P Seshadreesan, Petr M Anisimov, Hwang Lee and Jonathan P Dowling. IOP Science.
"Rényi generalizations of the conditional quantum mutual information." Mario Berta, Kaushik P. Seshadreesan, and Mark M. Wilde. AIP Journal of Mathematical Physics.
"Phase estimation at the quantum Cramér-Rao bound via parity detection." Kaushik P. Seshadreesan, Sejong Kim, Jonathan P. Dowling, and Hwang Lee. APS Physics.
"Fidelity of recovery, squashed entanglement, and measurement recoverability." Kaushik P. Seshadreesan and Mark M. Wilde. APS Physics.

Recent Publications

"Belief propagation with quantum messages for quantum-enhanced classical communications." N. Rengaswamy, K.P. Seshadreesan, S. Guha, et al.  npj Quantum Inf.
"Multiplexed quantum repeaters based on dual-species trapped-ion system."  Prajit Dhara, Norbert M. Linke, Edo Waks, Saikat Guha, and Kaushik P. Seshadreesan. arXiv.
"Coherent manipulation of graph states composed of finite-energy Gottesman-Kitaev-Preskill-encoded qubits." Kaushik P. Seshadreesan, Prajit Dhara, Ashlesha Patil, Liang Jiang, Saikat Guha. arXiv.
"Demonstration of quantum advantage by a joint detection receiver for optical communications using quantum belief propagation on a trapped-ion device." Conor Delaney, Kaushik P. Seshadreesan, Ian MacCormack, Alexey Galda, Saikat Guha, Prineha Narang. arXiv.
"Binary homodyne detection for observing quadrature squeezing in satellite links."  Christian R. Müller, Kaushik P. Seshadreesan, Christian Peuntinger, and Christoph Marquardt. APS Physics.