Experimental realization of an approximate transpose operation for qutrit systems using a structural physical approximation
SCIE
SCOPUS
- Title
- Experimental realization of an approximate transpose operation for qutrit systems using a structural physical approximation
- Authors
- Lim, HT; Kim, YS; Ra, YS; Bae, J; Kim, YH
- Date Issued
- 2012-10-24
- Publisher
- AMER PHYSICAL SOC
- Abstract
- Although important for detecting entanglement, the transpose operation cannot be directly realized in laboratory because it is a nonphysical operation. It is, however, possible to find an approximate transpose operation using the method known as the structural physical approximation (SPA); recently, SPA-based implementations of the transpose and partial transpose have been demonstrated for a single-qubit [Phys. Rev. A 83, 020301(R) (2011)] and an entangled two-qubit system [Phys. Rev. Lett. 107, 160401 (2011)]. In this work, we expand SPA-transpose to a three-dimensional quantum system: a qutrit. The photonic qutrit state is encoded in the polarization, and path degrees of freedom of a single-photon and the SPA-transpose operation, which is based on measurement and preparation of quantum states, is implemented with linear optics. Our work paves the way toward entanglement detection for higher-dimensional quantum systems.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11943
- DOI
- 10.1103/PHYSREVA.86.042334
- ISSN
- 1050-2947
- Article Type
- Article
- Citation
- PHYSICAL REVIEW A, vol. 86, no. 4, 2012-10-24
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