71 citations · 426 across the 16 of their papers we have counts for
16 papers
Experimental Activation of Strong Local Passive States with Quantum Information
Nayeli A. Rodríguez-Briones, Hemant Katiyar, Eduardo Martín-Martínez +1
Strong local passivity is a property of multipartite quantum systems from which it is impossible to extract energy locally. Surprisingly, if the strong local passive state displays…
Fast Simulation of Magnetic Field Gradients for Optimization of Pulse Sequences
John P. S. Peterson, Hemant Katiyar, Raymond Laflamme
We study how to simulate, efficiently, pulse field gradients (PFG) used in nuclear magnetic resonance (NMR). An efficient simulation requires discretization in time and space. We s…
Exploration of an augmented set of Leggett-Garg inequalities using a noninvasive continuous-in-time velocity measurement
Shayan-Shawn Majidy, Hemant Katiyar, Galit Anikeeva +2
Macroscopic realism (MR) is the view that a system may possess definite properties at any time independent of past or future measurements, and may be tested experimentally using th…
Gradient-based closed-loop quantum optimal control in a solid-state two-qubit system
Guanru Feng, Franklin H. Cho, Hemant Katiyar +4
Quantum optimal control can play a crucial role to realize a set of universal quantum logic gates with error rates below the threshold required for fault-tolerance. Open-loop quant…
Enhancing quantum control by bootstrapping a quantum processor of 12 qubits
Dawei Lu, Keren Li, Jun Li +10
Accurate and efficient control of quantum systems is one of the central challenges for quantum information processing. Current state-of-the-art experiments rarely go beyond 10 qubi…
Experimentally superposing two pure states with partial prior knowledge
Keren Li, Guofei Long, Hemant Katiyar +4
Superposition, arguably the most fundamental property of quantum mechanics, lies at the heart of quantum information science. However, how to create the superposition of any two un…
Experimental violation of the Leggett-Garg inequality in a 3-level system
Hemant Katiyar, Aharon Brodutch, Dawei Lu +1
The Leggett-Garg (LG) test of macroscopic realism involves a series of dichotomic non-invasive measurements that are used to calculate a function which has a fixed upper bound for…
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…
NMR quantum information processing
Dawei Lu, Aharon Brodutch, Jihyun Park +3
Quantum computing exploits fundamentally new models of computation based on quantum mechanical properties instead of classical physics, and it is believed that quantum computers ar…
Estimating Franck-Condon factors using an NMR quantum processor
Sharad Joshi, Abhishek Shukla, Hemant Katiyar +2
Interaction of molecules with light may lead to electronic transitions and simultaneous vibrational excitations. Franck-Condon factors (FCFs) play an important role in quantifying…
Freezing a Quantum Magnet by Repeated Quantum Interference: An Experimental Realization
Swathi S. Hegde, Hemant Katiyar, T. S. Mahesh +1
We experimentally demonstrate the phenomenon of dynamical many-body freezing in a periodically driven Ising chain. Theoretically [Phys. Rev. B 82, 172402 (2010)], for certain value…
Inversion of moments to retrieve joint probabilities in quantum sequential measurements
H. S. Karthik, Hemant Katiyar, Abhishek Shukla +3
A sequence of moments encode the corresponding probability distribution. Probing if quantum joint probability distribution can be retrieved from the associated set of moments -- re…
Monogamy of quantum correlations reveals frustration in a quantum Ising spin system: Experimental demonstration
K. Rama Koteswara Rao, Hemant Katiyar, T. S. Mahesh +3
We report a nuclear magnetic resonance experiment, which simulates the quantum transverse Ising spin system in a triangular configuration and further show that the monogamy of quan…
Violation of Entropic Leggett-Garg Inequality in Nuclear Spins
Hemant Katiyar, Abhishek Shukla, Rama Koteswara Rao +1
We report an experimental study of recently formulated entropic Leggett-Garg inequality (ELGI) by Usha Devi et al. (arXiv: 1208.4491v2 (2012)). This inequality places a bound on th…
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…