2014 Fiscal Year Annual Research Report
| Project/Area Number |
24540427
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | Non-commutativity / Entanglement / Quantum processes / Quantum correlation / Weak values / Quantum measurement |
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| Outline of Annual Research Achievements |
In last years research, I investigated and developed several new strategies for the direct experimental observation of non-classical correlations between non-commuting physical properties. In addition to the already published results on quantum-controlled measurements, it was discovered that the Einstein-Podolsky-Rosen type correlations of maximally entangled states can be used to analyze the dynamics of measurement processes, so that correlations between measurement errors appear as imaginary contributions to the error probabilities in the final analysis. A more detailed analysis of measurement processes also revealed that the relation between microscopic and macroscopic quantities is described by entanglement, which resulted in the proposal of a new class of quantum states represented by a single photon frequency comb state, which combines microscopic properties in time and frequency with conjugate macroscopic properties in time and frequency.
This years research also resulted in many new questions regarding the practical aspects of quantum physics. In particular, my work is at the forefront of new developments in the explanation of quantum correlations by statistical models, with the first statistical approach that can actually identify causality in quantum mechanics based on experimentally feasible means of control. As a result, it has been possible to identify quantum paradoxes with specific quantum gate operations. Specific circuits such as the quantum-controlled swap are now being designed by experimental groups for the purpose of implementing these new ideas.
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