Coupled quantized mechanical oscillators
Open accessAbstract
The harmonic oscillator is one of the simplest physical systems but also one of the most fundamental. It is ubiquitous in nature, often serving as an approximation for a more complicated system or as a building block in larger models. Realizations of harmonic oscillators in the quantum regime include electromagnetic fields in a cavity and the mechanical modes of a trapped atom or macroscopic solid. Quantized interaction between two motional modes of an individual trapped ion has been achieved by coupling through optical fields, and entangled motion of two ions in separate locations has been accomplished indirectly through their internal states. However, direct controllable coupling between quantized mechanical oscillators held in separate locations has not been realized previously. Here we implement such coupling through the mutual Coulomb interaction of two ions held in trapping potentials separated by 40 μm (similar work is reported in a related paper). By tuning the confining wells into resonance, energy is exchanged between the ions at the quantum level, establishing that direct coherent motional coupling is possible for separately trapped ions. The system demonstrates a building block for quantum information processing and quantum simulation. More broadly, this work is a natural precursor to experiments in hybrid quantum systems, such as coupling a trapped ion to a quantized macroscopic mechanical or electrical oscillator.
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An equivalent system has been implemented with two ions held in two Paul traps at a distance of 40 μm.
“An equivalent system has been implemented with two ions held in two Paul traps at a distance of 40 lm.43”
From Coherent coupling of a trapped electron to a distant superconducting microwave cavity (2020) · cites this paper as [43]
The paper describes two ions, each confined in a separate trapping well, with the wells 40 μm apart (pp. 1–2). It describes one surface-electrode trap producing those two wells, rather than two distinct Paul traps. (LLM, conf=0.85)
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- Authors
- Brown, K. R., Ospelkaus, C., Colombe, Y., Wilson, A. C., Leibfried, D., & Wineland, D. J.
- Affiliations
- National Institute of Standards and Technology (US)
- Corresponding author
- Brown, K. R.
- Venue
- Nature
- Published
- 2011-02-23
- Volume
- 471
- Issue
- 7337
- Pages
- 196-199
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W2005357928
- Cited by
- 279
- References
- 36
- Citations by year
- 2026: 9 · 2025: 15 · 2024: 15 · 2023: 14 · 2022: 13 · 2021: 22 · 2020: 18 · 2019: 14 · 2018: 15 · 2017: 17 · 2016: 21 · 2015: 15 · 2014: 23 · 2013: 23 · 2012: 24
- FWCI
- 15.77
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Institute of Standards and Technology
- Intelligence Advanced Research Projects Activity
- Office of Naval Research
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Mechanical and Optical Resonators
- 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
- Keywords
- trapped ions, electrostatic interactions, 9Be+ ions, 40Ca+ ions, ion trap, quantum simulation, quantum information processing, hybrid quantum systems
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