45 citations · 675 across the 61 of their papers we have counts for
6 papers · 1 filter
Volkov-Pankratov states on the edge of a quantum spin Hall system
Vivekananda Adak, Subhadeep Chakraborty, Krishanu Roychowdhury +1
Volkov-Pankratov (VP) states are a family of sub-gap states which appear at the smooth interface/domain wall between topologically distinct gapped states. We study the emergence of…
Spontaneous fractional Josephson current from parafermions
Kishore Iyer, Amulya Ratnakar, Aabir Mukhopadyaya +2
We study a parafermion Josephson junction (JJ) comprising a pair of counter-propagating edge modes of two quantum Hall (QH) systems, proximitized by an s-wave superconductor. We sh…
Non-local spin entanglement in a fermionic chain
Sayan Jana, Anant V. Varma, Arijit Saha +1
An effective two-spin density matrix (TSDM) for a pair of spin- degree of freedom, residing at a distance of in a spinful Fermi sea, can be obtained from the two-electron…
Essential role of quantum speed limit in violation of Leggett-Garg inequality across a PT-transition
Anant V. Varma, Jacob E. Muldoon, Sourav Paul +2
We study Leggett-Garg inequality (LGI) of a two level system (TLS) undergoing non-Hermitian dynamics governed by a non-linear Bloch equation (derived in J. Phys. A: Math. Theor. 54…
Tunneling density of states in Luttinger Liquid in proximity to a superconductor: Effect of non-local interaction
Amulya Ratnakar, Sourin Das
A recent study have shown that it is possible to have enhancement, in contrast to an expected suppression, in tunneling density of states (TDOS) in a Luttinger liquid (LL) which is…
-qubit states with maximum entanglement across all bipartitions: A graph state approach
Sowrabh Sudevan, Sourin Das
We discuss the construction of -qubit pure states with maximum bipartite entanglement across all possible choices of vs bi-partitioning, which implies that the Von Neu…