78 citations · 137 across the 7 of their papers we have counts for
7 papers
Simulated X-ray Emission in Galaxy Clusters with Feedback from Active Galactic Nuclei
Rudrani Kar Chowdhury, Soumya Roy, Suchetana Chatterjee +3
To investigate the effect of feedback from active galactic nuclei (AGN) on their surrounding medium, we study the diffuse X-ray emission from galaxy groups and clusters by coupling…
Nuclear Spins as Quantum Testbeds: Singlet States, Quantum Correlations, and Delayed-choice Experiments
Soumya Singha Roy
Nuclear Magnetic Resonance (NMR) forms a natural test-bed to perform quantum information processing (QIP) and has so far proven to be one of the most successful quantum information…
Evolution of Quantum Discord and its Stability in Two-Qubit NMR Systems
Hemant Katiyar, Soumya Singha Roy, T. S. Mahesh +1
We investigate evolution of quantum correlations in ensembles of two-qubit nuclear spin systems via nuclear magnetic resonance techniques. We use discord as a measure of quantum co…
NMR implementation of Quantum Delayed-Choice Experiment
Soumya Singha Roy, Abhishek Shukla, T. S. Mahesh
We report the first experimental demonstration of quantum delayed-choice experiment via nuclear magnetic resonance techniques. An ensemble of molecules each with two spin-1/2 nucle…
Study of Electromagnetically Induced Transparency using long-lived Singlet States
Soumya Singha Roy, T. S. Mahesh
The long-lived singlet states are useful to study a variety of interesting quantum phenomena. In this work we study electromagnetically induced transparency using a two-qubit syste…
Storing entanglement of nuclear spins via Uhrig Dynamical Decoupling
Soumya Singha Roy, T. S. Mahesh, G. S. Agarwal
Stroboscopic spin flips have already been shown to prolong the coherence times of quantum systems under noisy environments. Uhrig's dynamical decoupling scheme provides an optimal…
Initialization of NMR Quantum Registers using Long-Lived Singlet States
Soumya Singha Roy, T. S. Mahesh
An ensemble of nuclear spin-pairs under certain conditions is known to exhibit singlet state life-times much longer than other non-equilibrium states. This property of singlet stat…