19 citations · 23 across the 6 of their papers we have counts for
7 papers
On the undecidability of quantum channel capacities
Archishna Bhattacharyya, Arthur Mehta, Yuming Zhao
An important distinction in our understanding of capacities of classical versus quantum channels is marked by the following question: is there an algorithm which can compute (or ev…
Lifting the maximally-entangledness assumption in robust self-testing for synchronous games
Matthijs Vernooij, Yuming Zhao
Robust self-testing in non-local games allows a classical referee to certify that two untrustworthy players are able to perform a specific quantum strategy up to high precision. Pr…
Robust self-testing for nonlocal games with robust game algebras
Yuming Zhao
We give an operator-algebraic formulation of robust self-testing in terms of states on C*-algebras. We show that a quantum correlation p is a robust self-test only if among all (ab…
Postselection technique for optical Quantum Key Distribution with improved de Finetti reductions
Shlok Nahar, Devashish Tupkary, Yuming Zhao +2
The postselection technique is an important proof technique for proving the security of quantum key distribution protocols against coherent attacks. In this work, we go through mul…
Positivity is undecidable in tensor products of free algebras
Arthur Mehta, William Slofstra, Yuming Zhao
It is well known that an element of the algebra of noncommutative *-polynomials is positive in all *-representations if and only if it is a sum of squares. This provides an effecti…
Quantum delegation with an off-the-shelf device
Anne Broadbent, Arthur Mehta, Yuming Zhao
Given that reliable cloud quantum computers are becoming closer to reality, the concept of delegation of quantum computations and its verifiability is of central interest. Many mod…
An operator-algebraic formulation of self-testing
Connor Paddock, William Slofstra, Yuming Zhao +1
We give a new definition of self-testing for correlations in terms of states on -algebras. We show that this definition is equivalent to the standard definition for any class…