23 citations · 36 across the 5 of their papers we have counts for
7 papers
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…
Experimentally Testable Quantum Advantage in Shallow Circuits
Kishor Bharti, Adán Cabello
Experimental tests of shallow-circuit quantum advantage require explicit classical bounds at finite circuit sizes. We refine the finite-size classical soundness bound of Aasnaess's…
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…
Experimental Certification of Quantum Measurements with Maximally Mixed States
Jia-He Liang, Ze-Yan Hao, Jia-Kun Li +6
So far, certifying quantum devices from their input-output statistics, under minimal assumptions, required the preparation of specific pure quantum states. Recently, Xu et al. [Phy…
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…
Certifying sets of quantum observables with any full-rank state
Zhen-Peng Xu, Debashis Saha, Kishor Bharti +1
We show that some sets of quantum observables are unique up to an isometry and have a contextuality witness that attains the same value for any initial state. We prove that these t…
Probing the limits of correlations in an indivisible quantum system
M. Malinowski, C. Zhang, F. M. Leupold +3
We employ a trapped ion to study quantum contextual correlations in a single qutrit using the 5-observable KCBS inequality, which is arguably the most fundamental non-contextuality…