dorsal/arxiv
View SchemaImplementation of projective measurements with linear optics and continuous photon counting
| Authors | Masahiro Takeoka, Masahide Sasaki, Peter van Loock, Norbert Lütkenhaus |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0410133 |
| URL | https://arxiv.org/abs/quant-ph/0410133 |
| DOI | 10.1103/PhysRevA.71.022318 |
| Journal | Phys. Rev. A 71, 022318 (2005) |
Abstract
We investigate the possibility of implementing a given projection measurement using linear optics and arbitrarily fast feedforward based on the continuous detection of photons. In particular, we systematically derive the so-called Dolinar scheme that achieves the minimum error discrimination of binary coherent states. Moreover, we show that the Dolinar-type approach can also be applied to projection measurements in the regime of photonic-qubit signals. Our results demonstrate that for implementing a projection measurement with linear optics, in principle, unit success probability may be approached even without the use of expensive entangled auxiliary states, as they are needed in all known (near-)deterministic linear-optics proposals.
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"abstract": "We investigate the possibility of implementing a given projection measurement\nusing linear optics and arbitrarily fast feedforward based on the continuous\ndetection of photons. In particular, we systematically derive the so-called\nDolinar scheme that achieves the minimum error discrimination of binary\ncoherent states. Moreover, we show that the Dolinar-type approach can also be\napplied to projection measurements in the regime of photonic-qubit signals. Our\nresults demonstrate that for implementing a projection measurement with linear\noptics, in principle, unit success probability may be approached even without\nthe use of expensive entangled auxiliary states, as they are needed in all\nknown (near-)deterministic linear-optics proposals.",
"arxiv_id": "quant-ph/0410133",
"authors": [
"Masahiro Takeoka",
"Masahide Sasaki",
"Peter van Loock",
"Norbert L\u00fctkenhaus"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.022318",
"journal_ref": "Phys. Rev. A 71, 022318 (2005)",
"title": "Implementation of projective measurements with linear optics and continuous photon counting",
"url": "https://arxiv.org/abs/quant-ph/0410133"
},
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