Measuring qutrit-qutrit entanglement of orbital angular momentum states of an atomic ensemble and a photon
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 resul...
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| Veröffentlicht in: | Physical review letters 2009-09, Vol.103 (11), p.110503-110503, Article 110503 |
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| container_title | Physical review letters |
| container_volume | 103 |
| creator | Inoue, R Yonehara, T Miyamoto, Y Koashi, M Kozuma, M |
| description | 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 an 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. |
| doi_str_mv | 10.1103/physrevlett.103.110503 |
| format | Article |
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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 an ensemble of pure states of Schmidt rank 1 or 2. 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| identifier | ISSN: 0031-9007 |
| ispartof | Physical review letters, 2009-09, Vol.103 (11), p.110503-110503, Article 110503 |
| issn | 0031-9007 1079-7114 |
| language | eng |
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| source | American Physical Society Journals |
| subjects | ANGULAR MOMENTUM BOSONS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DENSITY MATRIX DIAGNOSTIC TECHNIQUES ELEMENTARY PARTICLES MASSLESS PARTICLES MATRICES ORBITAL ANGULAR MOMENTUM PHOTONS QUANTUM ENTANGLEMENT THREE-DIMENSIONAL CALCULATIONS TOMOGRAPHY |
| title | Measuring qutrit-qutrit entanglement of orbital angular momentum states of an atomic ensemble and a photon |
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