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4 papers · 2 filters
Unsolvability of the Halting Problem in Quantum Dynamics
Daegene Song
It is shown that the halting problem cannot be solved consistently in both the Schrodinger and Heisenberg pictures of quantum dynamics. The existence of the halting machine, which…
Demonstrating multipartite entanglement of single-particle W states: linear optical schemes
Hyunchul Nha, Jaewan Kim
We present two linear optical schemes using nonideal photodetectors to demonstrate inseparability of W-type N-partite entangled states containing only a single photon. First, we sh…
GHZ-type and W-type entangled coherent states: generation and Bell-type inequality tests without photon counting
Hyunseok Jeong, Nguyen Ba An
We study GHZ-type and W-type three-mode entangled coherent states. Both the types of entangled coherent states violate Mermin's version of the Bell inequality with threshold photon…
Quantum Separability of the vacuum for Scalar Fields with a Boundary
Jae-Weon Lee, Jaewan Kim, Taeseung Choi
Using the Green's function approach we investigate separability of the vacuum state of a massless scalar field with a single Dirichlet boundary. Separability is demonstrated using…