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Conclusive Exclusion of Quantum States
Somshubhro Bandyopadhyay, Rahul Jain, Jonathan Oppenheim +1
In the task of quantum state exclusion we consider a quantum system, prepared in a state chosen from a known set. The aim is to perform a measurement on the system which can conclu…
Tight bounds on the distinguishability of quantum states under separable measurements
Somshubhro Bandyopadhyay, Michael Nathanson
One of the many interesting features of quantum nonlocality is that the states of a multipartite quantum system cannot always be distinguished as well by local measurements as they…
Unextendible Mutually Unbiased Bases from Pauli Classes
Prabha Mandayam, Somshubhro Bandyopadhyay, Markus Grassl +1
We provide a construction of sets of (d/2+1) mutually unbiased bases (MUBs) in dimensions d=4,8 using maximal commuting classes of Pauli operators. We show that these incomplete se…
Operational measure of incompatibility of noncommuting observables
Somshubhro Bandyopadhyay, Prabha Mandayam
Uncertainty relations are often considered to be a measure of incompatibility of noncommuting observables. However, such a consideration is not valid in general, motivating the nee…