dorsal/arxiv
View SchemaEntanglement generation by Fock-state filtration
| Authors | K. J. Resch, J. L. O'Brien, T. J. Weinhold, K. Sanaka, A. G. White |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0608052 |
| URL | https://arxiv.org/abs/quant-ph/0608052 |
| DOI | 10.1103/PhysRevLett.98.203602 |
| Journal | Physical Review Letters 98, 203602 (2007) |
Abstract
We demonstrate a Fock-state filter which is capable of preferentially blocking single photons over photon pairs. The large conditional nonlinearities are based on higher-order quantum interference, using linear optics, an ancilla photon, and measurement. We demonstrate that the filter acts coherently by using it to convert unentangled photon pairs to a path-entangled state. We quantify the degree of entanglement by transforming the path information to polarisation information, applying quantum state tomography we measure a tangle of T=(20+/-9)%.
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"abstract": "We demonstrate a Fock-state filter which is capable of preferentially\nblocking single photons over photon pairs. The large conditional nonlinearities\nare based on higher-order quantum interference, using linear optics, an ancilla\nphoton, and measurement. We demonstrate that the filter acts coherently by\nusing it to convert unentangled photon pairs to a path-entangled state. We\nquantify the degree of entanglement by transforming the path information to\npolarisation information, applying quantum state tomography we measure a tangle\nof T=(20+/-9)%.",
"arxiv_id": "quant-ph/0608052",
"authors": [
"K. J. Resch",
"J. L. O\u0027Brien",
"T. J. Weinhold",
"K. Sanaka",
"A. G. White"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.98.203602",
"journal_ref": "Physical Review Letters 98, 203602 (2007)",
"title": "Entanglement generation by Fock-state filtration",
"url": "https://arxiv.org/abs/quant-ph/0608052"
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