2015 Fiscal Year Final Research Report
Quantum information theoretical research on multipartite non-classical correlations
| Project/Area Number |
24540405
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Mathematical physics/Fundamental condensed matter physics
|
|---|
| Research Institution | Hiroshima University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2012-04-01 – 2016-03-31
|
| Keywords | 量子相関 / ベル不等式 / エンタングルメント / 情報因果律 |
|---|
| Outline of Final Research Achievements |
Information causality (IC) states that the information obtainable by a receiver
cannot be greater than the communication bits from a sender. We extended
the formula of IC to include the effects of randomness that is intrinsic in quantum mechanics. The obtained formula is tight and saturated at some quantum mechanical boundary in the space of no-signaling correlations, and the strength of the quantum correlations at the boundary is considered to be limited by a cryptographic principle rather than IC. Moreover, we developed a device-independent method to calculate a lower bound of the degree of the remote randomness.
|
| Free Research Field |
量子情報理論
|
