70 citations · 631 across the 35 of their papers we have counts for
35 papers
Single system based generation of certified randomness using Leggett-Garg inequality
Pingal Pratyush Nath, Debashis Saha, Dipankar Home +1
We theoretically formulate and experimentally demonstrate a secure scheme for semi-device-independent quantum random number generation by utilizing Leggett-Garg inequality violatio…
Precise probing and discrimination of third-generation scalar leptoquarks
Anupam Ghosh, Partha Konar, Debashis Saha +1
We explore the pair production of third-generation scalar leptoquark at the Large Hadron Collider to next-to-leading order accuracy in QCD, matched to parton shower for a precise p…
Scalable Bell inequalities for graph states of arbitrary prime local dimension and self-testing
Rafael Santos, Debashis Saha, Flavio Baccari +1
Bell nonlocality -- the existence of quantum correlations that cannot be explained by classical means -- is certainly one of the most striking features of quantum mechanics. Its ra…
Measurement incompatibility and quantum advantage in communication
Debashis Saha, Debarshi Das, Arun Kumar Das +2
Measurement incompatibility stipulates the existence of quantum measurements that cannot be carried out simultaneously on single systems. We show that the set of input-output proba…
Quantum contextuality provides communication complexity advantage
Shashank Gupta, Debashis Saha, Zhen-Peng Xu +2
Despite the conceptual importance of contextuality in quantum mechanics, there is a hitherto limited number of applications requiring contextuality but not entanglement. Here, we s…
Wigner's approach enabled detection of multipartite nonlocality using all different bipartitions
Sumit Nandi, Debashis Saha, Dipankar Home +1
Distinct from Bell's approach, Wigner had derived a form of local realist (LR) inequality which is quantum mechanically violated for a bipartite maximally entangled state. Subseque…
Self-testing of any pure entangled state with minimal number of measurements and optimal randomness certification in one-sided device-independent scenario
Shubhayan Sarkar, Jakub J. Borkała, Chellasamy Jebarathinam +3
Certification of quantum systems and their properties has become a field of intensive studies. Here, taking advantage of the one-sided device-independent scenario (known also as qu…
Quantum description of reality is epistemically incomplete
Anubhav Chaturvedi, Marcin Pawłowski, Debashis Saha
We ask whether the operational quantum description is complete at the level of preparations: can the empirically accessible properties of a finite preparation set be reproduced exa…
Robust certification of arbitrary outcome quantum measurements from temporal correlations
Debarshi Das, Ananda G. Maity, Debashis Saha +1
Certification of quantum devices received from unknown providers is a primary requirement before utilizing the devices for any information processing task. Here, we establish a pro…
Demonstration of quantum correlations that are incompatible with absoluteness of measurement
Shubhayan Sarkar, Debashis Saha
Exploiting the tension between the two dynamics of quantum theory (QT) in the Wigner's Friend thought experiment, we point out that the standard QT leads to inconsistency in observ…
Certification of incompatible measurements using quantum steering
Shubhayan Sarkar, Debashis Saha, Remigiusz Augusiak
In this letter we consider the problem of certification of quantum measurements with an arbitrary number of outcomes. We propose a simple scheme for certifying any set of -outco…
Perfect discrimination of quantum measurements using entangled systems
Chandan Datta, Tanmoy Biswas, Debashis Saha +1
Distinguishing physical processes is one of the fundamental problems in quantum physics. Although distinguishability of quantum preparations and quantum channels have been studied…
Sum-of-squares decompositions for a family of noncontextuality inequalities and self-testing of quantum devices
Debashis Saha, Rafael Santos, Remigiusz Augusiak
Violation of a noncontextuality inequality or the phenomenon referred to `quantum contextuality' is a fundamental feature of quantum theory. In this article, we derive a novel fami…
Di-vector boson production in association with a Higgs boson at hadron colliders
Pankaj Agrawal, Debashis Saha, Ambresh Shivaji
We consider the production of a Higgs boson in association with two electroweak vector bosons at hadron colliders. In particular, we examine , , , and …
Determining the Shape of Higgs Potential at Future Colliders
Pankaj Agrawal, Debashis Saha, Ling-Xiao Xu +2
Although the Higgs boson has been discovered, its self-couplings are poorly constrained. This leaves the nature of the Higgs boson undetermined. Motivated by different Higgs potent…
Multiparty quantum random access codes
Debashis Saha, Jakub J. Borkala
Random access code (RAC), a primitive for many information processing protocols, enables one party to encode n-bit string into one bit of message such that another party can retrie…
Operational foundations of complementarity and uncertainty relations
Debashis Saha, Michał Oszmaniec, Łukasz Czekaj +2
The so-called preparation uncertainty can be understood in purely operational terms. Namely, it occurs when for some pair of observables, there is no preparation, for which they bo…
Device independent witness of arbitrary dimensional quantum systems employing binary outcome measurements
Mikołaj Czechlewski, Debashis Saha, Armin Tavakoli +1
Device independent dimension witnesses (DW) are a remarkable way to test the dimension of a quantum system in a prepare-and-measure scenario imposing minimal assumptions on the int…
Preparation contextuality as an essential feature underlying quantum communication advantage
Debashis Saha, Anubhav Chaturvedi
The study of ontology (hidden variables) provides for a vital ground on which significant non-classical features of quantum theory are revealed. One such non-classical ontic-featur…
A No-go theorem for device-independent security in relativistic causal theories
Roberto Salazar, Michał Kamon, Dardo Goyeneche +4
A crucial task for secure communication networks is to determine the minimum of physical requirements to certify a cryptographic protocol. A widely accepted candidate for certifica…
State independent contextuality advances one-way communication
Debashis Saha, Paweł Horodecki, Marcin Pawłowski
Although `quantum contextuality' is one of the most fundamental non-classical feature, its generic role in information processing and computation is an open quest. In this article,…
Production of and at the hadron colliders
Pankaj Agrawal, Debashis Saha, Ambresh Shivaji
We consider the production of two Higgs bosons in association with a gauge boson or another Higgs boson at the hadron colliders. We compute the cross sections and distributions for…
Complementarity between entanglement-assisted and quantum distributed random access code
Alley Hameedi, Debashis Saha, Piotr Mironowicz +2
Collaborative communication tasks such as random access codes (RACs) employing quantum resources have manifested great potential in enhancing information processing capabilities be…
Gluon fusion contribution to () at the LHC
Ambresh Shivaji, Pankaj Agrawal, Debashis Saha
We have calculated one-loop amplitudes for the production of Higgs boson in association with two electroweak bosons () via gluon-gluon fusion. We present preliminary results…