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quant-ph2022
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…
quant-ph2022★ 11 cited
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…