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8 papers · 2 filters
Pseudochaotic Many-Body Dynamics as a Pseudorandom State Generator
Wonjun Lee, Hyukjoon Kwon, Gil Young Cho
Quantum chaos is central to understanding quantum dynamics and is crucial for generating random quantum states, a key resource for quantum information tasks. In this work, we intro…
Improved bounds on quantum uncommon information
Yonghae Lee, Joonwoo Bae, Hayata Yamasaki +1
In classical information theory, channel capacity quantifies the maximum number of messages that can be reliably transmitted using shared information. An equivalent concept, termed…
Krylov fractality and complexity in generic random matrix ensembles
Budhaditya Bhattacharjee, Pratik Nandy
Krylov space methods provide an efficient framework for analyzing the dynamical aspects of quantum systems, with tridiagonal matrices playing a key role. Despite their importance,…
Investigating controlled teleportation capability of quantum states with respect to -separability
Minjin Choi, Jeonghyeon Shin, Gunho Lee +1
Quantum teleportation is an essential application of quantum entanglement. The examination of teleportation fidelity in two-party standard teleportation schemes reveals a critical…
Covariant quantum field theory of tachyons is unphysical
Krzysztof Jodłowski
Tachyons have fascinated generations of physicists due to their peculiar behavior, but they did not solve any real physical problem. This may have changed with the recent works of…
Pseudo-Hermitian Topology of Multiband Non-Hermitian Systems
Jung-Wan Ryu, Jae-Ho Han, Chang-Hwan Yi +2
The complex eigenenergies and non-orthogonal eigenstates of non-Hermitian systems exhibit unique topological phenomena that cannot appear in Hermitian systems. Representative examp…