2012 Fiscal Year Final Research Report
High fidelity entanglement swapping at telecommunication wavelength using single-photon detectors based on compound semiconductors
| Project/Area Number |
23760053
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Applied optics/Quantum optical engineering
|
|---|
| Research Institution | Nihon University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2011 – 2012
|
| Keywords | 量子もつれ交換 / 単一光子検出 / 通信波長帯 |
|---|
| Research Abstract |
Entanglement swapping experiment was carried out using spatially separated, polarization entangled photon sources at 1550 nm. In this experiment, we employed sinusoidally gated InGaAs/InP avalanche photodiodes which achieve high repetition frequencies and low dark counts. The high-performance single-photon detectors enable us to obtain ~ 0.9 of a fidelity of the entanglement swapping. The high-fidelity entanglement swapping will be able to be applied to the quantum key distribution over an optical fiber network.
|
Research Products
(9 results)
