|
| related topics |
| {photon, photons, single} |
| {state, phys, rev} |
| {state, states, entangled} |
| {qubit, qubits, gate} |
| {entanglement, phys, rev} |
| {states, state, optimal} |
| {cos, sin, state} |
| {phase, path, phys} |
| {vol, operators, histories} |
|
Linear Optical Implemention of a Quantum Network for Quantum Estimation
Zhi-Wei Wang, Jian Li, Yun-Feng Huang, Yong-Sheng Zhang, Xi-Feng Ren, Pei Zhang, Guang-Can Guo
abstract: We present a scheme for simulating the quantum network of quantum estimation
proposed by A. K. Ekert et al. [Phys. Rev. Lett. 88, 217901 (2002)]. We
experimentally implement the scheme with linear optical elements. We perform
overlap measurements of two single-qubit states and entanglement-witness
measurements of some two-qubit states. In addition, it can also be used for
entanglement quantification for some kinds of states. From the other
perspective, we physically realize the positive but not completely positive
map, transposition.
- oai_identifier:
- oai:arXiv.org:quant-ph/0607189
- categories:
- quant-ph
- comments:
- 8 pages,4 figures. Revised edition
- arxiv_id:
- quant-ph/0607189
- created:
- 2006-07-26
- updated:
- 2006-09-26
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