1.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- S.N. Bose National Centre for Basic SciencesIN60 papers
- Saha Institute of Nuclear PhysicsIN55 papers
- Indian Statistical Institute, Bangalore CentreIN51 papers
- Jadavpur UniversityIN41 papers
- University of CalcuttaIN39 papers
- Indian Institute of Science BangaloreIN35 papers
- Institute of Mathematical SciencesIN34 papers
- Indian Institute of Technology MadrasIN28 papers
- Bose InstituteIN27 papers
- Centre National de la Recherche ScientifiqueFR26 papers
- Indian Statistical Institute, Delhi CentreIN20 papers
- Tata Institute of Fundamental ResearchIN20 papers
15 papers · 2 filters
Random-Receiver Quantum Communication
Some Sankar Bhattacharya, Ananda G. Maity, Tamal Guha +2
We introduce the task of random-receiver quantum communication, in which a sender transmits a quantum message to a receiver chosen from a list of n spatially separated parties. The…
Asymptotically Improved Circuit for -ary Grover's Algorithm with Advanced Decomposition of -qudit Toffoli Gate
Amit Saha, Ritajit Majumdar, Debasri Saha +2
The progress in building quantum computers to execute quantum algorithms has recently been remarkable. Grover's search algorithm in a binary quantum system provides considerable sp…
Multi-copy adaptive local discrimination: Strongest possible two-qubit nonlocal bases
Manik Banik, Tamal Guha, Mir Alimuddin +3
Ensembles of composite quantum states can exhibit nonlocal behaviour in the sense that their optimal discrimination may require global operations. Such an ensemble containing N pai…
Quantum Cycle in Relativistic Non-Commutative Space with Generalized Uncertainty Principle correction
Pritam Chattopadhyay, Tanmoy Pandit, Ayan Mitra +1
Quantum heat cycles and quantum refrigerators are analyzed using various quantum systems as their working mediums. For example, to evaluate the efficiency and the work done of the…
Exact Quantum Query Algorithms Outperforming Parity -- Beyond The Symmetric functions
Chandra Sekhar Mukherjee, Subhamoy Maitra
In Exact Quantum Query model, almost all of the Boolean functions for which non-trivial query algorithms exist are symmetric in nature. The most well known techniques in this domai…
On Actual Preparation of Dicke State on a Quantum Computer
Chandra Sekhar Mukherjee, Subhamoy Maitra, Vineet Gaurav +1
The exact number of CNOT and single qubit gates needed to implement a Quantum Algorithm in a given architecture is one of the central problems of Quantum Computation. In this work…
Cryptanalysis of Quantum Secure Direct Communication Protocol with Mutual Authentication Based on Single Photons and Bell States
Nayana Das, Goutam Paul
Recently, Yan et al. proposed a quantum secure direct communication (QSDC) protocol with authentication using single photons and Einstein-Podolsky-Rosen (EPR) pairs (Yan et al., CM…
Operational Resource Theory of Imaginarity
Kang-Da Wu, Tulja Varun Kondra, Swapan Rana +5
Wave-particle duality is one of the basic features of quantum mechanics, giving rise to the use of complex numbers in describing states of quantum systems, their dynamics, and inte…
Two Efficient Measurement Device Independent Quantum Dialogue Protocols
Nayana Das, Goutam Paul
Quantum dialogue is a process of two way secure and simultaneous communication using a single channel. Recently, a Measurement Device Independent Quantum Dialogue (MDI-QD) protocol…
Improving the Security of "Measurement-Device-Independent Quantum Communication without Encryption"
Nayana Das, Goutam Paul
Recently in 2018, Niu et al. proposed a measurement-device-independent quantum secure direct communication protocol using Einstein-Podolsky-Rosen pairs and generalized it to a quan…
Bell Nonlocality and the Reality of Quantum Wavefunction
Anandamay Das Bhowmik, Preeti Parashar, Manik Banik
Status of quantum wavefunction is one of the most debated issues in quantum foundations -- whether it corresponds directly to the reality or just represents knowledge or informatio…
Thermodynamic advancement in the causally inseparable occurrence of thermal maps
Tamal Guha, Mir Alimuddin, Preeti Parashar
Quantum mechanics allows the occurrence of events without having any definite causal order. Here, it is shown that the application of two different thermal channels in the causally…
Comment on "Quantum key agreement protocol"
Nayana Das, Ritajit Majumdar
The first two party Quantum Key Agreement (QKA) protocol, based on quantum teleportation, was proposed by Zhou et al. (Electronics Letters 40.18 (2004): 1149-1150). In this protoco…
Structure of passive states and its implication in charging quantum batteries
Mir Alimuddin, Tamal Guha, Preeti Parashar
In this article, in addition to the characterization of geometrical state spaces for the passive states, an operational approach has been introduced to distinguish them on their ch…
Quantum Advantage for Shared Randomness Generation
Tamal Guha, Mir Alimuddin, Sumit Rout +3
Sharing correlated random variables is a resource for a number of information theoretic tasks such as privacy amplification, simultaneous message passing, secret sharing and many m…