Scalable fiber integrated source for higher-dimensional path-entangled photonic quNits
| Autor: | Schaeff, Christoph, Polster, Robert, Lapkiewicz, Radek, Fickler, Robert, Ramelow, Sven, Zeilinger, Anton |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Optics Express 20, 16145-16153,2012 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1364/OE.20.016145 |
| Popis: | Integrated photonic circuits offer the possibility for complex quantum optical experiments in higher-dimensional photonic systems. However, the advantages of integration and scalability can only be fully utilized with the availability of a source for higher-dimensional entangled photons. Here, a novel fiber integrated source for path-entangled photons in the telecom band at 1.55\mum using only standard fiber technology is presented. Due to the special design the source shows good scalability towards higher-dimensional entangled photonic states (quNits), while path entanglement offers direct compatibility with on-chip path encoding. We present an experimental realization of a path-entangled two-qubit source. A very high quality of entanglement is verified by various measurements, i.a. a tomographic state reconstruction is performed leading to a background corrected fidelity of (99.45+-0.06)%. Moreover, we describe an easy method for extending our source to arbitrarily high dimensions. Comment: 9 pages, 3 figures, to be published in Optics Express Vol. 20, No. 10 (05/07/2012) |
| Databáze: | arXiv |
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