dorsal/arxiv
View SchemaMeasurement-Based Teleportation Along Quantum Spin Chains
| Authors | J. P. Barjaktarevic, J. Links, G. J. Milburn, Ross H. McKenzie |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0501180 |
| URL | https://arxiv.org/abs/quant-ph/0501180 |
| DOI | 10.1103/PhysRevLett.95.230501 |
Abstract
We consider teleportation of an arbitrary spin-1/2 target quantum state along the ground state of a quantum spin chain. We present a decomposition of the Hilbert space of the many body quantum state into 4 vector spaces. Within each of these subspaces, it is possible to take any superposition of states, and use projective measurements to perform unit fidelity teleportation. Any such superposition is necessarily a spin liquid state. We also show that all total spin-0 quantum states belong in the same space, so that it is possible to perform unit fidelity teleportation over any one-dimensional spin-0 many body quantum state. We generalise to $n$-Bell states, and present some general bounds on fidelity of teleportation given a general state of a quantum spin chain.
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"abstract": "We consider teleportation of an arbitrary spin-1/2 target quantum state along\nthe ground state of a quantum spin chain. We present a decomposition of the\nHilbert space of the many body quantum state into 4 vector spaces. Within each\nof these subspaces, it is possible to take any superposition of states, and use\nprojective measurements to perform unit fidelity teleportation. Any such\nsuperposition is necessarily a spin liquid state. We also show that all total\nspin-0 quantum states belong in the same space, so that it is possible to\nperform unit fidelity teleportation over any one-dimensional spin-0 many body\nquantum state. We generalise to $n$-Bell states, and present some general\nbounds on fidelity of teleportation given a general state of a quantum spin\nchain.",
"arxiv_id": "quant-ph/0501180",
"authors": [
"J. P. Barjaktarevic",
"J. Links",
"G. J. Milburn",
"Ross H. McKenzie"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.95.230501",
"title": "Measurement-Based Teleportation Along Quantum Spin Chains",
"url": "https://arxiv.org/abs/quant-ph/0501180"
},
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