314 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Indian Institute of Technology HyderabadIN6 papers
- Patna UniversityIN6 papers
- Bihar National CollegeIN3 papers
- Harish-Chandra Research InstituteIN3 papers
- Indian Institute of Science Education and Research KolkataIN3 papers
- Indian Institute of Technology JodhpurIN3 papers
- Jaypee Institute of Information TechnologyIN3 papers
- Pennsylvania State UniversityUS3 papers
- Jamia Millia IslamiaIN2 papers
- University of WarsawPL2 papers
- University of ZululandZA2 papers
- Amirkabir University of TechnologyIR1 paper
41 papers · 1 filter
Quantum interpretations, causality and quantum computation
Vivek Kumar, M. P. Singh, R. Srikanth
The interpretation of quantum mechanics continues to be debated, and quantum nonlocality accentuates the puzzle. Quantum interpretations can be classified broadly into two types: r…
Nonlocal correlations in an asymmetric quantum network
Souradeep Sasmal, Shyam Sundar Mahato, Alok Kumar Pan
The nonlocality revealed in a multiparty multisource network Bell experiment is conceptually different than the standard multiparty Bell nonlocality involving a single common sourc…
Device-independent certification of degeneracy-breaking measurements
Prabuddha Roy, Shyam Sundar Mahato, Sumit Mukherjee +1
In a device-independent Bell test, the devices are considered to be black boxes and the dimension of the system remains unspecified. The dichotomic observables involved in such a B…
Sharing nonlocality in a network using the quantum violation of chain network inequality
Rahul Kumar, A. K. Pan
Based on the quantum violation of suitable -local inequality in a star network for arbitrary inputs, we demonstrate the sharing of nonlocality in the network. Such a network…
Device-independent self-testing of unsharp measurements
Prabuddha Roy, A. K. Pan
Semi-device-independent certification of an unsharp instrument has recently been demonstrated [New J. Phys. 21, 083034 (2019)] based on the sequential sharing of quantum advantages…
Generalized -locality inequalities in linear-chain network for arbitrary inputs scenario and their quantum violations
Rahul Kumar, A. K. Pan
Multipartite nonlocality in a network is conceptually different from standard multipartite Bell nonlocality. In recent times, network nonlocality has been studied for various topol…
Sharing nonlocality in quantum network by unbounded sequential observers
Shyam Sundar Mahato, A. K. Pan
Of late, there has been an upsurge of interest in studying the sequential sharing of various forms of quantum correlations, viz., nonlocality, preparation contextuality, coherence,…
Discriminating mirror symmetric states with restricted contextual advantage
Sumit Mukherjee, Shivam Naonit, A. K. Pan
The generalized notion of noncontextuality provides an avenue to explore the fundamental departure of quantum theory from a classical explanation. Recently, extracting a different…
Characterizing nonlocal correlations through various -locality inequlities in quantum network
Sneha Munshi, A. K. Pan
The multipartite quantum networks feature multiple independent sources, in contrast to the conventional multipartite Bell experiment involving a single source. So far, network nonl…
Generalized -locality inequalities in star-network configuration and their optimal quantum violations
Sneha Munshi, A. K. Pan
Standard multiparty Bell experiments involve a single source shared by a set of observers. In contrast, network Bell experiments feature multiple independent sources, and each of t…
Lüders bounds of Leggett-Garg inequalities, - symmetric evolution and arrow-of-time
Asmita Kumari, A. K. Pan
Leggett Garg inequalities (LGIs) test the incompatibility between the notion of macrorealism and quantum mechanics. For unitary dynamics, the optimal quantum violation of an LGI is…
Oblivious communication game, self-testing of projective and non-projective measurements and certification of randomness
A. K. Pan
We provide an interesting two-party parity oblivious communication game whose success probability is solely determined by the Bell expression. The parity-oblivious condition in an…
Quantum violations of Lüders bound Leggett-Garg inequalities for quantum channel
Asmita Kumari, A. K. Pan
Leggett Garg inequalities (LGIs) provide an elegant way for probing the incompatibility between the notion of macrorealism and quantum mechanics. For unitary dynamics, the optimal…
Projective measurements under qubit quantum channels
Javid Naikoo, Subhashish Banerjee, A. K. Pan +1
The action of qubit channels on projective measurements on a qubit state is used to establish an equivalence between channels and properties of generalized measurements characteriz…
Direct experimental test of commutation relation via weak value
Richard Wagner, Wenzel Kersten, Armin Danner +3
The canonical commutation relation is the hallmark of quantum theory and Heisenberg's uncertainty relation is a direct consequence of it. But despite its fundamental role in quantu…
Two definitions of maximally -epistemic ontological model and preparation non-contextuality
A. K. Pan
An ontological model is termed as maximally -epistemic if the overlap between any two quantum states is fully accounted for by the overlap of their respective probability distri…
Lder rule, von Neumann rule and Cirelson's bound of Bell CHSH inequality
Asmita Kumari, A. K. Pan
In [PRL, 113, 050401 (2014)] the authors have shown that instead of Lder rule, if degeneracy breaking von Neumann projection rule is adopted for state reduction, the quan…
Semi-device independent randomness certification using Mermin's proof of Kochen-Specker contextuality
A. K. Pan
Randomness is a potential resource for cryptography, simulations and algorithms. Non-local correlations violating Bell's inequality certify the generation of bit strings whose rand…
Device-independent certification of Hilbert space dimension using a family of Bell expressions
A. K. Pan, Shyam Sundar Mahato
Dimension witness provides a device-independent certification of the minimal dimension required to reproduce the observed data without imposing assumptions on the functioning of th…
Interference experiment, anomalous weak value and Leggett-Garg test of macrorealism
A. K. Pan
Macrorealism is a classical world view asserting that the properties of macro-objects exist independently and irrespective of observation. One practical approach to test this view…
Disembodiment of arbitrary number of properties in quantum Cheshire cat experiment
A. K. Pan
The quantum Cheshire cat is an effect demonstrated within the framework of weak measurement aided with post-selection scenario where the property (say, grin) of a quantum particle…
Sharing non-locality and non-trivial preparation contextuality using same family of Bell expressions
Asmita Kumari, A. K. Pan
In [Phys. Rev. Lett. 114, 250401 (2015)] the sharing of non-locality by multiple observers was demonstrated through the quantum violation of Clauser-Horne-Shimony-Halt inequality.…
Revealing universal quantum contextuality through communication games
A. K. Pan
A theory is universal contextual if its prediction cannot be reproduced by an ontological model satisfying both preparation and measurement noncontextuality assumptions. In this re…
symmetric evolution, coherence and violation of Leggett-Garg inequalities
Javid Naikoo, Swati Kumari, A. K. Pan +1
We report an unusual buildup of the quantum coherence in a qubit subjected to non-Hermitian evolution generated by a Parity-Time () symmetric Hamiltonian, which is re…