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- Seoul National UniversityKR22 papers
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6 papers · 1 filter
Detection and typicality of bound entangled states
Joonwoo Bae, Markus Tiersch, Simeon Sauer +4
We derive an explicit analytic estimate for the entanglement of a large class of bipartite quantum states which extends into bound entanglement regions. This is done by using an ef…
Immeasurability of Zero-point Energy in the Cosmological Constant problem
Daegene Song
A huge discrepancy between the zero-point energy calculated from quantum theory and the observed quantity in the Universe has been one of the most illusive problems in physics. In…
Multi-dimensional trio coherent states
Hyo Seok Yi, Ba An Nguyen, Jaewan Kim
We introduce a novel class of higher-order, three-mode states called K-dimensional trio coherent states. We study their mathematical properties and prove that they form a complete…
Hillery-type squeezing in fan-states
Minh Duc Truong, Ba An Nguyen
We study the Hillery-type, i.e. -th power, amplitude squeezing in the fan-state characterized by , and a nonlinear operator-v…
Secure quantum cryptographic network based on quantum key distribution
Sora Choi, Soojoon Lee, Dong Pyo Chi
We present a protocol for quantum cryptographic network consisting of a quantum network center and many users, in which any pair of parties with members chosen from the whole users…
Decoherence from Internal Dynamics in Macroscopic Matter-Wave Interferometry
Sang Wook Kim, Hwa-Kyun Park
Usually, decoherence is generated from the coupling with an outer environment. However, a macroscopic object generically possesses its own environment in itself, namely the complic…