74 citations · 188 across the 17 of their papers we have counts for
19 papers
Quantum Information-Theoretic Analysis of Optical Fiber Sensing via Stimulated Brillouin Scattering
Kiran Adhikari, Janis Nötzel
Stimulated Brillouin scattering (SBS) is a powerful mechanism for distributed sensing in optical fibers, as the Brillouin response is highly sensitive to local material parameters.…
Pseudo Entropy in Quantum Spin Chains: from Integrability to Chaos
Tara Bahadur Rana, Yadav Raj Dahal, Kiran Adhikari
In this work, we study pseudo entropy and spectral dynamics in quantum spin chains (Heisenberg XXZ model and the mixed-field Ising model) to investigate whether they can serve as d…
Certified Fidelity Susceptibility from Classical Shadows
Kiran Adhikari
Fidelity susceptibility is a useful probe of quantum phase transitions and quantum metrology, but its direct evaluation on a quantum device is challenging. By integrating Krylov-su…
Quantum-Limited Blind Source Separation of Classical Light
Janis Nötzel, Kiran Adhikari
Using the framework of quantum multiparameter estimation, we study the problem of separating independent thermal optical sources mixed by an unknown passive linear transformation,…
Pseudo entropy and topological phases of matter
Pramod Kamal Kharel, Manghang Limbu, Nabaraj Khatri +2
Entanglement entropy has proven to be a powerful probe of phenomena such as quantum chaos and phase transitions. Pseudo entropy is a recently proposed time-like generalization of a…
Cosmological Pseudo-Entropy
Manghang Limbu, Pramod Kamal Kharel, Rohit Bhattarai +1
We study pseudo entropy , a recent generalization of entanglement entropy, for scalar cosmological perturbations in de Sitter space with sound speed $0.024 \leq c_s \l…
Fundamental Limits of Eavesdropper Detection and Localization in Optical Fiber via Stimulated Brillouin Scattering
Kiran Adhikari, Janis Nötzel
Recent work investigated the use of Stimulated Brillouin Scattering (SBS) to measure changes in fiber parameters, thereby enhancing the security of a Quantum Key Distribution (QKD)…
Quantum ramp secret sharing from Haar scrambling
Kiran Adhikari
Quantum information scrambling has emerged as a powerful tool for studying the dynamics of chaotic quantum many-body systems, assessing benchmarking protocols, and even investigati…
Krylov Polynomials and Quantum Query Complexity
Kiran Adhikari
We show that the minimal query complexity for preparing is exactly the optimal polynomial approximation degree of in , where is the spectral measure…
Entanglement and particle production from cosmological perturbations: a quantum optical simulation approach
Pramod Kamal Kharel, Mausam Ghimire, Ashish Khanal +6
In this work, we develop a computational framework based on the Gaussian formalism and symplectic circuit representation to explore cosmological perturbations during inflation. The…
Out of the box approach to Black hole Information paradox
Kiran Adhikari
Suppose a black hole forms from a pure quantum state . The black hole information loss paradox arises from semiclassical arguments suggesting that, even in a closed system,…
Quantum optimization of coherent chaotic systems: A case for buses of Kathmandu
Kiran Adhikari, Aman Ganeju, Iva Kumari Lamichhane +4
In this paper, we propose a novel quantum computing approach to solve the real-world problem of optimizing transportation in bustling Kathmandu city. The transportation system in K…
Quantum information spreading and scrambling in a distributed quantum network: A Hasse/Lamport diagrammatic approach
Kiran Adhikari, Christian Deppe
Large-scale quantum networks, known as quantum internet, hold great promises for advanced distributed quantum computing and long-distance quantum communication. It is essential to…
Krylov Complexity of Fermionic and Bosonic Gaussian States
Kiran Adhikari, Adwait Rijal, Ashok Kumar Aryal +3
The concept of \emph{complexity} has become pivotal in multiple disciplines, including quantum information, where it serves as an alternative metric for gauging the chaotic evoluti…
Krylov Complexity in Quantum Field Theory
Kiran Adhikari, Sayantan Choudhury, Abhishek Roy
In this paper, we study the Krylov complexity in quantum field theory and make a connection with the holographic "Complexity equals Volume" conjecture. When Krylov basis matches wi…
Cosmological Krylov Complexity
Kiran Adhikari, Sayantan Choudhury
In this paper, we study the Krylov complexity () from the planar/inflationary patch of the de Sitter space using the two mode squeezed state formalism in the presence of an effe…
Circuit Complexity in
Kiran Adhikari, Sayantan Choudhury, Sourabh Kumar +6
Motivated by recent studies of circuit complexity in weakly interacting scalar field theory, we explore the computation of circuit complexity in Even Effective Fiel…
Primordial Gravitational Wave Circuit Complexity
Kiran Adhikari, Sayantan Choudhury, Hardey N. Pandya +1
In this article, we investigate various physical implications of quantum circuit complexity using squeezed state formalism of Primordial Gravitational Waves (PGW). Recently quantum…
Circuit Complexity as a novel probe of Quantum Entanglement: A study with Black Hole Gas in arbitrary dimensions
Kiran Adhikari, Sayantan Choudhury, Satyaki Chowdhury +2
In this article, we investigate the quantum circuit complexity and entanglement entropy in the recently studied black hole gas framework using the two-mode squeezed states formalis…