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Classical-communication cost in distributed quantum-information processing: A generalization of quantum-communication complexity

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Lo, Hoi-Kwong·2000·Physical Review A

Abstract

We study the amount of classical communication needed for distributed quantum-information processing. In particular, we introduce the concept of ``remote preparation'' of a quantum state. Given an ensemble of states, Alice's task is to help Bob in a distant laboratory to prepare a state of her choice. We find several examples of an ensemble with an entropy S where the remote preparation can be done with a communication cost lower than the amount $(2S)$ required by standard teleportation. We conjecture that, for an arbitrary N-dimensional pure state, its remote preparation requires $2{\mathrm{log}}_{2}N$ bits of classical communication, as in standard teleportation.

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Metadata

Authors
Lo, H.-K.
Venue
Physical Review A
Published
2000-06-16
Volume
62
Issue
1
ISSN
  • 0556-2791 (ISSN-L)
  • 1050-2947
  • 1094-1622
OpenAlex
W2086651839
Cited by
671
References
2
FWCI
13.33
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Classical-communication cost in distributed quantum-information processing: A generalization of quantum-communication complexity. https://app.cochat.ai/papers/10.1103/physreva.62.012313
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Lo, H.-K. (2000). Classical-communication cost in distributed quantum-information processing: A generalization of quantum-communication complexity. Physical Review A. https://doi.org/10.1103/physreva.62.012313

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.