dorsal/arxiv
View SchemaExploring a New Post-Selection Condition for Efficient Linear Optics Quantum Computation
| Authors | R. Coen Cagli, P. Aniello, N. Cesario, F. Foncellino |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0412207 |
| URL | https://arxiv.org/abs/quant-ph/0412207 |
| Journal | Int.J.Quant.Inf. 3 (2005) 611-621 |
Abstract
Recently, it was shown that fundamental gates for theoretically efficient quantum information processing can be realized by using single photon sources, linear optics and quantum counters. One of these fundamental gates is the NS-gate, that is, the one-mode non-linear sign shift. In this work, firstly, we prove by a new rigorous proof that the upper bound of success probability of NS-gates with only one helper photon and an undefined number of ancillary modes is bounded by 0.25. Secondly, we explore the upper bound of success probability of NS-gate with a new post-selection measurement. The idea behind this new post-selection measurement is to condition the success of NS-gate transformation to the observation of only one helper photon in whichever of the output modes.
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"abstract": "Recently, it was shown that fundamental gates for theoretically efficient\nquantum information processing can be realized by using single photon sources,\nlinear optics and quantum counters. One of these fundamental gates is the\nNS-gate, that is, the one-mode non-linear sign shift. In this work, firstly, we\nprove by a new rigorous proof that the upper bound of success probability of\nNS-gates with only one helper photon and an undefined number of ancillary modes\nis bounded by 0.25. Secondly, we explore the upper bound of success probability\nof NS-gate with a new post-selection measurement. The idea behind this new\npost-selection measurement is to condition the success of NS-gate\ntransformation to the observation of only one helper photon in whichever of the\noutput modes.",
"arxiv_id": "quant-ph/0412207",
"authors": [
"R. Coen Cagli",
"P. Aniello",
"N. Cesario",
"F. Foncellino"
],
"categories": [
"quant-ph"
],
"journal_ref": "Int.J.Quant.Inf. 3 (2005) 611-621",
"title": "Exploring a New Post-Selection Condition for Efficient Linear Optics Quantum Computation",
"url": "https://arxiv.org/abs/quant-ph/0412207"
},
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