Measuring Qutrit-Qutrit Entanglement of Orbital Angular Momentum States of an Atomic Ensemble and a Photon
| Autor: | Inoue, R., Yonehara, T., Miyamoto, Y., Koashi, M., Kozuma, M. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 103 (2009) 110503 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.103.110503 |
| Popis: | Three-dimensional entanglement of orbital angular momentum states of an atomic qutrit and a single photon qutrit has been observed. Their full state was reconstructed using quantum state tomography. The fidelity to the maximally entangled state of Schmidt rank 3 exceeds the threshold 2/3. This result confirms that the density matrix cannot be decomposed into ensemble of pure states of Schmidt rank 1 or 2. That is, the Schmidt number of the density matrix must be equal to or greater than 3. Comment: 5 pages, 4 figures |
| Databáze: | arXiv |
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