activity
19992009
most citedUniversal state inversion and concurrence in arbitrary dimensions

860 citations · 1.4k across the 12 of their papers we have counts for

collaborators

12 papers

quant-ph2009★ 16 cited

Algorithmic approach to simulate Hamiltonian dynamics and an NMR simulation of Quantum State Transfer

Ashok Ajoy, Rama Koteswara Rao, Anil Kumar +1

We propose an iterative algorithm to simulate the dynamics generated by any -qubit Hamiltonian. The simulation entails decomposing the unitary time evolution operator (unita…

quant-ph2009★ 50 cited

Svetlichny's inequality and genuine tripartite nonlocality in three-qubit pure states

Ashok Ajoy, Pranaw Rungta

The violation of the Svetlichny's inequality (SI) [Phys. Rev. D, 35, 3066 (1987)] is sufficient but not necessary for genuine tripartite nonlocal correlations. Here we quantify the…

quant-ph2008★ 106 cited

Tripartite entanglement versus tripartite nonlocality in 3-qubit GHZ-class states

S. Ghose, N. Sinclair, S. Debnath +2

We analyze the relationship between tripartite entanglement and genuine tripartite nonlocality for 3-qubit pure states in the GHZ class. We consider a family of states known as the…

quant-ph2008★ 32 cited

Symmetry-noise interplay in quantum walk on an n-cycle

Subhashish Banerjee, R. Srikanth, C. M. Chandrashekar +1

Augmenting the unitary transformation which generates a quantum walk by a generalized phase gate G is a symmetry for both noisy and noiseless quantum walk on a line, in the sense t…

quant-ph2007★ 1 cited

The quadratic speedup in Grover's search algorithm from the entanglement perspective

Pranaw Rungta

We analyze the role played by entanglement in the dynamical evolution of Grover's search algorithm in the space of qubits. We show that the algorithm can be equivalently described…

quant-ph2005★ 1 cited

Quantum Random Walks without a Coin Toss

Apoorva Patel, K. S. Raghunathan, Pranaw Rungta

We construct a quantum random walk algorithm, based on the Dirac operator instead of the Laplacian. The algorithm explores multiple evolutionary branches by superposition of states…