dorsal/arxiv
View SchemaConditional sign flip via teleportation
| Authors | Gian Luca Giorgi, Ferdinando de Pasquale, Simone Paganelli |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0404139 |
| URL | https://arxiv.org/abs/quant-ph/0404139 |
| DOI | 10.1103/PhysRevA.70.022319 |
| Journal | Phys. Rev. A 70, 022319 (2004) |
Abstract
We present a model to realize a probabilistic conditional sign flip gate using only linear optics. The gate operates in the space of number state qubits and is obtained by a nonconventional use of the teleportation protocol. Both a destructive and a nondestructive version of the gate are presented. In the former case an Hadamard gate on the control qubit is combined with a projective teleportation scheme mixing control and target. The success probability is 1/2. In the latter case we need a quantum encoder realized via the interaction of the control qubit with an ancillary state composed of two maximally entangled photons. The success probability is 1/4.
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"abstract": "We present a model to realize a probabilistic conditional sign flip gate\nusing only linear optics. The gate operates in the space of number state qubits\nand is obtained by a nonconventional use of the teleportation protocol. Both a\ndestructive and a nondestructive version of the gate are presented. In the\nformer case an Hadamard gate on the control qubit is combined with a projective\nteleportation scheme mixing control and target. The success probability is 1/2.\nIn the latter case we need a quantum encoder realized via the interaction of\nthe control qubit with an ancillary state composed of two maximally entangled\nphotons. The success probability is 1/4.",
"arxiv_id": "quant-ph/0404139",
"authors": [
"Gian Luca Giorgi",
"Ferdinando de Pasquale",
"Simone Paganelli"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.70.022319",
"journal_ref": "Phys. Rev. A 70, 022319 (2004)",
"title": "Conditional sign flip via teleportation",
"url": "https://arxiv.org/abs/quant-ph/0404139"
},
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