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pro vyhledávání: '"J., Harikrishnan K."'
Autor:
J, Harikrishnan K, Pal, Amit Kumar
We propose a protocol for concentrating bipartite entanglement over a qubit-qudit system from arbitrary number of qubit-qudit states via a truncation of the Hilbert space corresponding to the subsystem containing the qubits to a space that hosts a si
Externí odkaz:
http://arxiv.org/abs/2410.15892
Autor:
J, Harikrishnan K, Pal, Amit Kumar
We investigate the topological-to-non-topological quantum phase transitions (QPTs) occurring in the Kitaev code under local perturbations in the form of local magnetic field and spin-spin interactions of the Ising-type using fidelity susceptibility (
Externí odkaz:
http://arxiv.org/abs/2405.00416
We consider a star-network of $n=n_0+n_p$ spin-$\frac{1}{2}$ particles, where interaction between $n_0$ central spins and $n_p$ peripheral spins are of the XYZ-type. In the limit $n_0/n_p\ll 1$, we show that for odd $n$, the ground state is doubly de
Externí odkaz:
http://arxiv.org/abs/2307.15949
Publikováno v:
Physics Letters A 511 (2024) 129543
We consider transfer of single and multi-qubit states on a quasi-1D lattice, where the time evolutions involved in the state transfer protocol are generated by only 1D Hamiltonians. We use the quasi-1D isotropic Heisenberg model under a magnetic fiel
Externí odkaz:
http://arxiv.org/abs/2306.08440
Publikováno v:
Phys. Rev. A 110, 032408 (2024)
In this paper, we calculate entanglement in the isotropic Heisenberg model in a magnetic field on a two-dimensional rectangular zig-zag lattice in the strong rung-coupling limit, using the one-dimensional XXZ model as a proxy. Focusing on the leading
Externí odkaz:
http://arxiv.org/abs/2301.04615
Autor:
J., Harikrishnan K., Pal, Amit Kumar
Publikováno v:
Phys. Rev. A 108, 032404 (2023)
Characterizing large noisy multiparty quantum states using genuine multiparty entanglement is a challenging task. In this paper, we calculate lower bounds of genuine multiparty entanglement localized over a chosen multiparty subsystem of multi-qubit
Externí odkaz:
http://arxiv.org/abs/2211.01064
Publikováno v:
Phys. Rev. A 107, 042411(2023)
We investigate the relation between the amount of entanglement localized on a chosen subsystem of a multi-qubit system via local measurements on the rest of the system, and the bipartite entanglement that is lost during this measurement process. We s
Externí odkaz:
http://arxiv.org/abs/2206.07731
Autor:
J., Harikrishnan K., Pal, Amit Kumar
Publikováno v:
Phys. Rev. A 105, 052421 (2022)
We investigate the static and the dynamical behavior of localizable entanglement and its lower bounds on nontrivial loops of topological quantum codes with parallel magnetic field. Exploiting the connection between the stabilizer states and graph sta
Externí odkaz:
http://arxiv.org/abs/2108.11198
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Publikováno v:
BioInvasions Record; Mar2023, Vol. 12 Issue 1, p196-207, 12p, 2 Color Photographs, 2 Diagrams, 1 Chart, 1 Map
