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
12 papers · 2 filters
Indefinite causal order enables perfect quantum communication with zero capacity channels
Giulio Chiribella, Manik Banik, Some Sankar Bhattacharya +6
Quantum mechanics is compatible with scenarios where the relative order between two events can be indefinite. Here we show that two independent instances of a noisy process can beh…
Two new results about quantum exact learning
Srinivasan Arunachalam, Sourav Chakraborty, Troy Lee +2
We present two new results about exact learning by quantum computers. First, we show how to exactly learn a -Fourier-sparse -bit Boolean function from …
Efficient Quantum Algorithms related to Autocorrelation Spectrum
Debajyoti Bera, Subhamoy Maitra, SAPV Tharrmashastha
In this paper, we propose efficient probabilistic algorithms for several problems regarding the autocorrelation spectrum. First, we present a quantum algorithm that samples from th…
Quantum error-correcting code for ternary logic
Ritajit Majumdar, Saikat Basu, Shibashis Ghosh +1
Ternary quantum systems are being studied because these provide more computational state space per unit of information, known as qutrit. A qutrit has three basis states, thus a qub…
Sharing of tripartite nonlocality by multiple observers measuring sequentially at one side
Sutapa Saha, Debarshi Das, Souradeep Sasmal +4
Standard tripartite nonlocality and genuine tripartite nonlocality can be detected by the violations of Mermin inequality and Svetlichny inequality, respectively. Since tripartite…
Environmental effects on nonlocal correlations
Tamal Guha, Bihalan Bhattacharya, Debarshi Das +6
Environmental interactions are ubiquitous in practical instances of any quantum information processing protocol. The interaction results in depletion of various quantum resources a…
Advantage of Quantum Theory Over Non-classical Models of Communication
Sutapa Saha, Some Sankar Bhattacharya, Tamal Guha +2
Quantum correlations provide dramatic advantage over the corresponding classical resources in several communication tasks. However a broad class of probabilistic theories exists th…
Necessary and sufficient condition for the existence of Schmidt decomposition in multipartite Hilbert spaces
Spandan Das, Goutam Paul
Pati (Physics Letters A, 2000) derived a sufficient condition for the existence of Schmidt decomposition in tripartite Hilbert spaces. In this paper, we show that the condition is…
Affect of Simulated Atmospheric Turbulence on Three Entangled Photons
Pritam Chattopadhyay, Ayan Mitra, Goutam Paul +1
The thorough experimental study for the measure of sustainability of the atmospheric turbulence of the entangled photons for two qubit has been analysed by G. Puentes et al. [Phys.…
Infinite Mode Quantum Gaussian States
B. V. Rajarama Bhat, Tiju Cherian John, R. Srinivasan
Quantum Gaussian states on Bosonic Fock spaces are quantum versions of Gaussian distributions. In this paper, we explore infinite mode quantum Gaussian states. We extend many of th…
Search of clustered marked states with lackadaisical quantum walks
Amit Saha, Ritajit Majumdar, Debasri Saha +2
Nature of quantum walk in presence of multiple marked state has been studied by Nahimovs and Rivosh \cite{10.1007/978-3-662-49192-8_31}. They have shown that if the marked states a…
From CCR to Levy Processes: An Excursion in Quantum Probability
K. R. Parthasarathy
This is an expositary article telling a short story made from the leaves of quantum probability with the following ingredients: (i) A special projective, unitary, irreducible and f…