26 citations · 104 across the 13 of their papers we have counts for
Showing 2020 · quant-phShow all
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quant-ph2020★ 16 cited
The PPT conjecture holds for all Choi-type maps
Satvik Singh, Ion Nechita
We prove that the PPT conjecture holds for linear maps between matrix algebras which are covariant under the action of the diagonal unitary group. Many salient examples, like t…
quant-ph2020★ 8 cited
Can entanglement hide behind triangle-free graphs?
Satvik Singh
We present an alternative approach to unveil a different kind of entanglement in bipartite quantum states whose diagonal zero patterns in suitable matrix representations admit a ni…
quant-ph2020★ 26 cited
Diagonal unitary and orthogonal symmetries in quantum theory
Satvik Singh, Ion Nechita
We analyze bipartite matrices and linear maps between matrix algebras, which are respectively, invariant and covariant, under the diagonal unitary and orthogonal groups' actions. B…