15 citations · 15 across the 2 of their papers we have counts for
6 papers
Ancilla Induced Amplification of Quantum Fisher Information
C. S. Sudheer Kumar, T. S. Mahesh
Given a quantum state with an unknown parameter, the Quantum Fisher Information (QFI) is a measure of the amount of information that an observable can extract about the parameter.…
Violation of space-time Bell-CHSH inequality beyond Tsirelson bound via post selection and quantum cryptography
C S Sudheer Kumar
Here we show that, if we insert context dependent unitary evolutions (which can be achieved via post selection) into spatial (i.e., normal) Bell-CHSH test, then it is possible to v…
Quantum Correlations in NMR systems
T. S. Mahesh, C. S. Sudheer Kumar, Udaysinh T. Bhosale
In conventional NMR experiments, the Zeeman energy gaps of the nuclear spin ensembles are much lower than their thermal energies, and accordingly exhibit tiny polarizations. Genera…
Discriminating between Lüders and von Neumann measuring devices: An NMR investigation
C. S. Sudheer Kumar, Abhishek Shukla, T. S. Mahesh
Measurement of an observable on a quantum system involves a probabilistic collapse of the quantum state and a corresponding measurement outcome. Lüders and von Neumann state update…
Ancilla assisted measurements on quantum ensembles: General protocols and applications in NMR quantum information processing
T. S. Mahesh, Abhishek Shukla, Swathi S. Hegde +4
Quantum ensembles form easily accessible architectures for studying various phenomena in quantum physics, quantum information science, and spectroscopy. Here we review some recent…
NMR investigation of contextuality in a quantum harmonic oscillator via pseudospin mapping
Hemant Katiyar, C. S. Sudheer Kumar, T. S. Mahesh
Physical potentials are routinely approximated to harmonic potentials so as to analytically solve the system dynamics. Often it is important to know when a quantum harmonic oscilla…