R. Srikanth

Secure quantum communication with orthogonal states

2016 · International Journal of Quantum Information

In majority of protocols of secure quantum communication (such as, BB84, B92, etc.), the unconditional security of the protocols are obtained by using conjugate coding (two or more mutually unbiased bases (MUBs)). Initially, all the …

Protocols for counterfactual and twin-field quantum digital signature

2023 · arXiv (Cornell University)

Quantum digital signature (QDS) is the quantum version of its classical counterpart, and can offer security against attacks of repudiation, signature forging and external eavesdropping, on the basis of quantum mechanical no-go principles. Here we …

Dissipation in fermionic two-body continuous-time quantum walk under the steepest entropy ascent formalism

2025 · Physical review. E

Quantum walks play a crucial role in quantum algorithms and computational problems. Many-body quantum walks can reveal and exploit quantum correlations that are unavailable for single-walker cases. Studying quantum walks under noise and dissipation, particularly …