dorsal/arxiv
View SchemaInteraction-free generation of entanglement
| Authors | Hiroo Azuma |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0304031 |
| URL | https://arxiv.org/abs/quant-ph/0304031 |
| DOI | 10.1103/PhysRevA.68.022320 |
| Journal | Phys. Rev. A 68, 022320 (2003) |
Abstract
In this paper, we study how to generate entanglement by interaction-free measurement. Using Kwiat et al.'s interferometer, we construct a two-qubit quantum gate that changes a particle's trajectory according to the other particle's trajectory. We propose methods for generating the Bell state from an electron and a positron and from a pair of photons by this gate. We also show that using this gate, we can carry out the Bell measurement with the probability of 3/4 at the maximum and execute a controlled-NOT operation by the method proposed by Gottesman and Chuang with the probability of 9/16 at the maximum. We estimate the success probability for generating the Bell state by our procedure under imperfect interaction.
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"abstract": "In this paper, we study how to generate entanglement by interaction-free\nmeasurement. Using Kwiat et al.\u0027s interferometer, we construct a two-qubit\nquantum gate that changes a particle\u0027s trajectory according to the other\nparticle\u0027s trajectory. We propose methods for generating the Bell state from an\nelectron and a positron and from a pair of photons by this gate. We also show\nthat using this gate, we can carry out the Bell measurement with the\nprobability of 3/4 at the maximum and execute a controlled-NOT operation by the\nmethod proposed by Gottesman and Chuang with the probability of 9/16 at the\nmaximum. We estimate the success probability for generating the Bell state by\nour procedure under imperfect interaction.",
"arxiv_id": "quant-ph/0304031",
"authors": [
"Hiroo Azuma"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.68.022320",
"journal_ref": "Phys. Rev. A 68, 022320 (2003)",
"title": "Interaction-free generation of entanglement",
"url": "https://arxiv.org/abs/quant-ph/0304031"
},
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