Arun Kumar Pati

Complementarity of quantum correlations in cloning and deleting of quantum states

2015 · Physical Review A

We quantify the amount of correlation generated between two different output modes in imperfect cloning and deletion processes. We use three different measures of quantum correlations and investigate their role in determining the fidelity of …

Nonlocal advantage of quantum coherence

2017 · Physical Review A

A bipartite state is said to be steerable if and only if it does not have a single-system description, i.e., the bipartite state cannot be explained by a local hidden state model. Several steering inequalities …

Quantum speed limits for information and coherence

2022 · New Journal of Physics

Abstract The quantum speed limit indicates the maximal evolution speed of the quantum system. In this work, we determine speed limits on the informational measures, namely the von Neumann entropy, maximal information, and coherence of …

Using Quantum Switches to Mitigate Noise in Grover's Search Algorithm

2024 · arXiv (Cornell University)

Grover's quantum search algorithm promises a quadratic speedup for unstructured search over its classical counterpart. But this advantage is affected by noise acting on the search space. Here, we show that a quantum switch can …