124 citations · 527 across the 10 of their papers we have counts for
11 papers
Quantumness of noisy quantum walks: a comparison between measurement-induced disturbance and quantum discord
Balaji R. Rao, R. Srikanth, C. M. Chandrashekar +1
Noisy quantum walks are studied from the perspective of comparing their quantumness as defined by two popular measures, measurement-induced disturbance (MID) and quantum discord (Q…
Quantum Data Bus in Dipolar Coupled Nuclear Spin Qubits
Jingfu Zhang, Michael Ditty, Daniel Burgarth +6
We implement an iterative quantum state transfer exploiting the natural dipolar couplings in a spin chain of a liquid crystal NMR system. During each iteration a finite part of the…
Generic quantum walk using a coin-embedded shift operator
C. M. Chandrashekar
The study of quantum walk processes has been widely divided into two standard variants, the discrete-time quantum walk (DTQW) and the continuous-time quantum walk (CTQW). The conne…
Direct observation of quantum criticality in Ising spin chains
Jingfu Zhang, Fernando M. Cucchietti, C. M. Chandrashekar +6
We use NMR quantum simulators to study antiferromagnetic Ising spin chains undergoing quantum phase transitions. Taking advantage of the sensitivity of the systems near criticality…
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…
Optimizing the discrete time quantum walk using a SU(2) coin
C. M. Chandrashekar, R. Srikanth, Raymond Laflamme
We present a generalized version of the discrete time quantum walk, using the SU(2) operation as the quantum coin. By varying the coin parameters, the quantum walk can be optimized…