7 papers
Quantum computer-based simulation of Stark many-body localization in a 1D Fermi-Hubbard model
Abdul Kalam, Prasenjit Deb, Akitada Sakurai +3
Many-body localization (MBL) is a dynamical phenomenon that describes the non-ergodicity of isolated quantum many-body systems. In contrast to thermalization, this phenomenon leads…
Quantifying Entangling Power of Controlled Unitary Gates
Ankur Haldar, Pankaj Agrawal, Prasenjit Deb
Applying controlled unitary gates to generate entanglement between qubits is a routine task in both quantum communication and computation. The existing tools for predicting how muc…
Comparing quantum and classical finite state generators
Prasenjit Deb, Almut Beige, Lewis A. Clark
Bell-CHSH-like inequalities have been very successful in benchmarking {\it spatial} quantum correlations. However, as this paper illustrates, they are in general not sufficient for…
Estimation of trace distance between two arbitrary quantum states
Sanchita Ghosh, Anumita Mukhopadhyay, Anindita Bera +2
When it comes to discriminating between two quantum states, trace distance is one of the well-known metrics used in quantum computation and quantum information theory. While there…
Deterministic distribution of W-class states in quantum networks
Souvik Chatterjee, Prasenjit Deb, Chandan Datta +1
Multipartite entangled states possess a number of non-intuitive properties, making them a useful resource for various quantum information-processing tasks. The three-qubit W-state…
Modified security analysis of device-independent quantum key distribution with random key basis
Sawan Bhattacharyya, Turbasu Chatterjee, Pankaj Agrawal +1
Security analysis is a critical part in any cryptographic protocol, may it be classical or quantum. Without security analysis, one cannot ensure the secrecy of the distributed keys…
Efficient Quantum Information-Inspired Ansatz for Variational Quantum Eigensolver Algorithm: Applications to Atomic Systems
Abdul Kalam, Prasenjit Deb, Akitada Sakurai +3
We present a quantum information-inspired ansatz for the variational quantum eigensolver (VQE) and demonstrate its efficacy in calculating ground-state energies of atomic systems.…