dorsal/arxiv
View SchemaReversibility of continuous-variable quantum cloning
| Authors | R. Filip, J. Fiurasek, P. Marek |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0310123 |
| URL | https://arxiv.org/abs/quant-ph/0310123 |
| DOI | 10.1103/PhysRevA.69.012314 |
| Journal | Phys. Rev. A 69, 012314 (2004). |
Abstract
We analyze a reversibility of optimal Gaussian $1\to 2$ quantum cloning of a coherent state using only local operations on the clones and classical communication between them and propose a feasible experimental test of this feature. Performing Bell-type homodyne measurement on one clone and anti-clone, an arbitrary unknown input state (not only a coherent state) can be restored in the other clone by applying appropriate local unitary displacement operation. We generalize this concept to a partial LOCC reversal of the cloning and we show that this procedure converts the symmetric cloner to an asymmetric cloner. Further, we discuss a distributed LOCC reversal in optimal $1\to M$ Gaussian cloning of coherent states which transforms it to optimal $1\to M'$ cloning for $M'<M$. Assuming the quantum cloning as a possible eavesdropping attack on quantum communication link, the reversibility can be utilized to improve the security of the link even after the attack.
{
"annotation_id": "f0d17589-6b25-4a96-a666-9656af935861",
"date_created": "2026-03-02T18:02:03.346000Z",
"date_modified": "2026-03-02T18:02:03.346000Z",
"file_hash": "ad071a54d6fc3d6bea889b2d5a034a47c3e1ce839635f13ba16b42762c64ae1e",
"private": false,
"record": {
"abstract": "We analyze a reversibility of optimal Gaussian $1\\to 2$ quantum cloning of a\ncoherent state using only local operations on the clones and classical\ncommunication between them and propose a feasible experimental test of this\nfeature. Performing Bell-type homodyne measurement on one clone and anti-clone,\nan arbitrary unknown input state (not only a coherent state) can be restored in\nthe other clone by applying appropriate local unitary displacement operation.\nWe generalize this concept to a partial LOCC reversal of the cloning and we\nshow that this procedure converts the symmetric cloner to an asymmetric cloner.\nFurther, we discuss a distributed LOCC reversal in optimal $1\\to M$ Gaussian\ncloning of coherent states which transforms it to optimal $1\\to M\u0027$ cloning for\n$M\u0027\u003cM$. Assuming the quantum cloning as a possible eavesdropping attack on\nquantum communication link, the reversibility can be utilized to improve the\nsecurity of the link even after the attack.",
"arxiv_id": "quant-ph/0310123",
"authors": [
"R. Filip",
"J. Fiurasek",
"P. Marek"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.69.012314",
"journal_ref": "Phys. Rev. A 69, 012314 (2004).",
"title": "Reversibility of continuous-variable quantum cloning",
"url": "https://arxiv.org/abs/quant-ph/0310123"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "5d9bf7ac-47ec-4c94-9ba5-13098c9e5892",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}