56 citations · 247 across the 25 of their papers we have counts for
25 papers
Incompleteness in the Bell Theorem Using Non-contextual Local Realistic Model
Koji Nagata, Tadao Nakamura, Han Geurdes
Here, we consider the Bell experiment for a system described by multipartite states in the case where n-dichotomic observables are measured per site. If n is two, we consider a two…
A note on the possibility of incomplete theory
Han Geurdes, Koji Nagata, Tadao Nakamura +1
In the paper it is demonstrated that Bells theorem is an unprovable theorem.
Whether quantum mechanics can be almighty even in information science
Koji Nagata, Tadao Nakamura
We discuss that there is a crucial contradiction within quantum mechanics. We derive a proposition concerning a quantum expectation value under the assumption of the existence of t…
New Method to Reveal the Conflict Between Local Realism and Quantum Mechanics
Koji Nagata, Jaewook Ahn
We formulate the expectation value of the Bell-Zukowski operator acting on qubit states of a two-particle Bell experiment. By using the equivalence between a set of N copies of a t…
Multi-setting Bell inequality for qudits
Se-Wan Ji, Jinhyoung Lee, James Lim +2
We propose a generalized Bell inequality for two three-dimensional systems with three settings in each local measurement. It is shown that this inequality is maximally violated if…
Unconditional no-hidden-variables theorem
Koji Nagata
Recently, [{arXiv:0810.3134}] is accepted and published. We present ultimate version of no-hidden-variables theorem. We derive a proposition concerning the quantum theory under the…