8 citations · 15 across the 13 of their papers we have counts for
16 papers · 1 filter
Topology-independent quantum advantage in communication networks
Ankush Pandit, V. N. S. Meghanath Ashtakala, Leon George Padayatty +1
Quantum communication can outperform classical communication in a variety of information-processing tasks, but such advantages are typically established for a fixed communication n…
Self-testing ideal quantum measurements
Debashis Saha, Zhen-Peng Xu, Adán Cabello
A fundamental prediction of quantum mechanics is that observables can be measured through ideal measurements, that is, measurements that give the same outcome when repeated and do…
Nonlocality without entanglement for multipartite quantum measurements
Satyaki Manna, Debashis Saha
We show that a pair of two-qubit product measurements can be perfectly distinguished when accessed jointly, yet cannot be perfectly distinguished when their local components are di…
Semi-Device-Independent Quantum Key Distribution from Operational Assumptions
Anubhav Chaturvedi, Giuseppe Viola, Ekta Panwar +2
Semi-device-independent quantum key distribution leaves the measurement devices uncharacterized while placing a trusted assumption on Alice's source. We formulate this source assum…
Genuine certification of incompatible quantum instruments through sequential communication tasks
Arindam Mitra, Satyaki Manna, Debashis Saha
Quantum instruments constitute the general description of quantum dynamics, encompassing both quantum measurements and quantum channels as special cases. Consequently, the incompat…
Entanglement assisted communication complexity measured by distinguishability
Satyaki Manna, Ankush Pandit, Anubhav Chaturvedi +1
We investigate the quantum advantage that can arise in typical two-party communication scenarios, where the sender and the receiver are allowed to share prior correlations. Focusin…
Contextuality-based quantum key distribution with deterministic single-photon sources
Yu Meng, Debashis Saha, Mikkel Thorbjørn Mikkelsen +7
Photons are central to quantum technologies, with photonic qubits offering a promising platform for quantum communication. Semiconductor quantum dots stand out for their ability to…
Maximally epistemic models cannot explain gambling with two qubits
Sagnik Ray, Anubhav Chaturvedi, Debashis Saha
We investigate the minimal proof for ruling out maximally epistemic interpretations of quantum theory, in which the indistinguishable nature of two quantum states is fully expl…
Global versus Local Discrimination of Locally Implementable Multipartite Unitaries
Satyaki Manna, Sneha Suresh, Anandamay Das Bhowmik +1
We study single-shot distinguishability of locally implementable multipartite unitaries under Local Operations and Classical Communication (LOCC) and global operations. As unitary…
Communication scenario enables robust self-testing of n-party Greenberger-Horne-Zeilinger basis measurements
Barnik Bhaumik, Sagnik Ray, Debashis Saha
Entangled basis measurements play a crucial role in distributing quantum entanglement between parties across a quantum network. In this work, we adopt a semi-device-independent app…
Limits of Classical correlations and Quantum advantages under (Anti-)Distinguishability constraints in Multipartite Communication
Ankush Pandit, Soumyabrata Hazra, Satyaki Manna +2
We consider communication scenarios with multiple senders and a single receiver. Focusing on communication tasks where the distinguishability or antidistinguishability of the sende…
Limitation of maximally entangled probes for single-shot distinguishability of unitaries
Satyaki Manna, Anandamay Das Bhowmik, Debashis Saha
There have been many instances where the maximally entangled state as a probe acts better than the product and the non-maximally entangled states in the task of distinguishing quan…
Supersinglets can be self-tested with perfect quantum strategies
Debashis Saha, Adán Cabello
Supersinglets are states of spin-zero of particles of levels. They are invariant under unitary transformations of the form and have applications in me…
Single-shot Distinguishability and Anti-distinguishability of Quantum Measurements
Satyaki Manna, Sneha Suresh, Manan Singh Kachhawaha +1
Among the surprising features of quantum measurements, the problem of distinguishing and antidistinguishing general quantum measurements is fundamentally appealing. Unlike classica…
Failure of epistemic models to explain the antidistinguishability of quantum mixed preparations
Sagnik Ray, Visweshwaran R, Debashis Saha
We investigate the limits of epistemic models in reproducing the empirical predictions of general quantum preparations. This involves comparing the common quantum overlap determine…
Unbounded quantum advantage in communication complexity measured by distinguishability
Satyaki Manna, Anubhav Chaturvedi, Debashis Saha
Communication complexity is a fundamental aspect of information science, concerned with the amount of communication required to solve a problem distributed among multiple parties.…