Quantum Dense Coding with Atomic Qubits
Abstract
We report the implementation of quantum dense coding on individual atomic qubits with the use of two trapped 9Be+ ions. The protocol is implemented with a complete Bell measurement that distinguishes the four operations used to encode two bits of classical information. We measure an average transmission fidelity of 0.85(1) and determine a channel capacity of 1.16(1).
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Performance of the PPBS gates is limited almost exclusively by mode matching, primarily spatial.
“Performance of the PPBS gates are limited almost exclusively by mode matching, primarily spatial, making these gates promising candidates for micro-or integrated-optical implementations, where nonclassical mode matching in excess of 99% can be expected [21].”
From Demonstration of a Simple Entangling Optical Gate and Its Use in Bell-State Analysis (2005) · cites this paper as [21]
The PPBS gates are promising candidates for micro- or integrated-optical implementations.
“Performance of the PPBS gates are limited almost exclusively by mode matching, primarily spatial, making these gates promising candidates for micro-or integrated-optical implementations, where nonclassical mode matching in excess of 99% can be expected [21].”
From Demonstration of a Simple Entangling Optical Gate and Its Use in Bell-State Analysis (2005) · cites this paper as [21]
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- Authors
- Schaetz, T., Barrett, M. D., Leibfried, D., Chiaverini, J., Britton, J., Itano, W. M., Jost, J. D., Langer, C., & Wineland, D. J.
- Affiliations
- National Institute of Standards and Technology (US)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2004-07-22
- Volume
- 93
- Issue
- 4
- Pages
- 040505-040505
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2097200546
- Cited by
- 132
- References
- 29
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 11 · 2023: 26 · 2022: 9 · 2021: 5 · 2020: 7 · 2019: 3 · 2018: 2 · 2016: 7 · 2015: 4 · 2014: 1 · 2013: 2 · 2012: 3
- FWCI
- 7.10
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
- Keywords
- quantum dense coding, atomic qubits, trapped ions, quantum channel capacity, transmission fidelity, quantum information encoding
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