7 papers
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…
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…
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…