24 citations · 130 across the 26 of their papers we have counts for
27 papers
Margenau-Hill distribution as a Necessary and Sufficient Signature of Measurement Incompatibility
Partha Patra, A. K. Pan
Measurement incompatibility and the negativity of quasi-probability distributions both demonstrate the signature of nonclassicality. However, their relations largely remained quali…
Certified quantum supremacy in entanglement-assisted prepare-measure random-access-code
Rajdeep Paul, Prabuddha Roy, A. K. Pan
We develop a family of semi-device-independent (SDI) entanglement-assisted prepare-measure (PM) communication games involving two parties, within the random-access…
Probing the robustness of various self-testing protocols for multipartite entangled states
Priyaranjan K. Jha, Ritesh K. Singh, A. K. Pan
Device-independent certification of multipartite entangled states plays a central role in a wide range of practical applications, including quantum networks, conference key agreeme…
Semi-device-independent self-testing of unitary operations
Rajdeep Paul, Prabuddha Roy, A. K. Pan
We present a hitherto unexplored semi-device-independent (SDI) self-testing protocol designed to certify unitary operations within a variant of prepare-measure framework. We consid…
Scalable Self-Testing of Mutually Anticommuting Observables and Maximally Entangled Two-Qudits
Souradeep Sasmal, Ritesh K. Singh, Prabuddha Roy +1
The next frontier in device-independent quantum information lies in the certification of scalable and parallel quantum resources, which underpin advanced quantum technologies. We p…
Self-testing in a constrained prepare-measure scenario sans assuming quantum dimension
Ritesh K. Singh, Souradeep Sasmal, S. Nautiyal +1
We present a device-independent (DI) self-testing protocol in a constrained prepare-measure scenario, based on the bit parity-oblivious multiplexing (POM) task. In this scenari…
Device-independent full network nonlocality for arbitrary-party and unbounded-input scenario
Sneha Munshi, A. K. Pan
The nonlocality arising in a multi-party network involving multiple independent sources radically differs from the standard multipartite Bell nonlocality involving a single source.…
Towards Necessary and sufficient state condition for violation of a multi-settings Bell inequality
Swapnil Bhowmick, Som Kanjilal, A. K. Pan +1
High dimensional quantum entanglement and the advancements in their experimental realization provide a playground for fundamental research and eventually lead to quantum technologi…
Constrained Measurement Incompatibility from Generalised Contextuality of Steered Preparation
Sumit Mukherjee, A. K. Pan
In a bipartite Bell scenario involving two local measurements per party and two outcome per measurement, the measurement incompatibility in one wing is both necessary and sufficien…
Unbounded Sharing of Nonlocality Using Projective Measurements
S. Sasmal, S. Kanjilal, A. K. Pan
It is a common perception that a sharp projective measurement in one side of the Bell experiment destroys the entanglement of the shared state, thereby preventing the demonstration…
Self-testing of an unbounded number of mutually commuting local observables
Sneha Munshi, A. K. Pan
Based on the optimal quantum violation of suitable Bell's inequality, the device-independent self-testing of state and observables has been reported. It is well-studied that locall…
Optimal quantum violations of n-locality inequalities with conditional dependence on inputs
Sneha Munshi, A. K. Pan
Bell experiment in the network gives rise to a form of quantum nonlocality which is conceptually different from traditional multipartite Bell nonlocality. Conventional multipartite…
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…
Generalized parity-oblivious communication games powered by quantum preparation contextuality
Prabuddha Roy, A. K. Pan
The parity-oblivious random-access-code (PORAC) is a class of communication games involving a sender (Alice) and a receiver (Bob). In such games, Alice's amount of communication to…
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…
Quantum violation of trivial and non-trivial preparation non-contextuality: Nonlocality and Steering
Prabuddha Roy, A. K. Pan
This paper illustrates a direct connection between quantum steering and non-trivial preparation contextuality. In two party-two measurement per party-two outcomes per measurement $…
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,…
Robust certification of unsharp instruments through sequential quantum advantages in a prepare-measure communication game
Abhyoudai. S. S., Sumit Mukherjee, A. K. Pan
Communication games are one of the widely used tools that are designed to demonstrate quantum supremacy over classical resources. In that, two or more parties collaborate to perfor…
Interplay of nonlocality and incompatibility breaking qubit channels
Swati Kumari, Javid Naikoo, Sibasish Ghosh +1
Incompatibility and nonlocality are not only of foundational interest but also act as important resources for quantum information theory. In the Clauser-Horne-Shimony-Holt (CHSH) s…
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…
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…