| Title | Realizing quantum advantage without entanglement in single-photon states |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | A.. Maldonado-Trapp, P. Solano, A. Hu, and C. W. Clark |
| Journal | NEW JOURNAL OF PHYSICS |
| Volume | 19 |
| Pagination | 053009 |
| Date Published | MAY 16 |
| Type of Article | Article |
| ISSN | 1367-2630 |
| Keywords | encoding process, entanglement, quantum advantage, quantum discord, single photons, X-states |
| Abstract | We propose an optical circuit for attaining quantum measurement advantage in a system that has no quantum entanglement. Our device produces symmetric two-qubit X-states with controllable anti-diagonal elements, and does not require entangled states as input. We discuss the use of this device in a two-qubit quantum game. When entanglement is absent, the maximum quantum advantage in this game is 1/3 bit. A slightly diminished quantum advantage, 0.311 bit, can be realized with a simplified transaction protocol.}, %%Address = {TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| DOI | 10.1088/1367-2630/aa6cf4 |
