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Coupled quantized mechanical oscillators

机译：耦合量化机械振荡器

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摘要

谐振器是个简单的、普遍存在的物理系统，rn人们已经知道有各种不同振荡器存量子力学层rn面上发挥功能。此前，两个量子力学振荡器之rn间的联系只是间接实现过，但两个小组现在演rn示了在不同地方的两个谐振器之间在量子层面rn上的直接耦合。这样的系统有可能用作量子信rn息处理器和模拟器的构造单元。Brown等人实rn现了束缚存“束缚势”中、相距40微米的9Bern离子之、司的直接可控耦合。在一个类似的实验rn中，Harlanaer等人耦合了相距54微米的被束缚rn的40Ca+离子。在他们的系统中，另外的离子起rn天线的作用，来放大离子之间发生的耦合。%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 cavity1 3 and the mechanical modes of a trapped atom4 or macroscopic solid5. Quantized interaction between two motional modes of an individual trapped ion has been achieved by coupling through optical fields6, and entangled motion of two ions in separate locations has been accomplished indirectly through their internal states7. 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 um (similar work is reported in a related paper8). 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 oscillator9"13.
机译：谐振器是个简单的、普遍存在的物理系统，rn人们已经知道有各种不同振荡器存量子力学层rn面上发挥功能。此前，两个量子力学振荡器之rn间的联系只是间接实现过，但两个小组现在演rn示了在不同地方的两个谐振器之间在量子层面rn上的直接耦合。这样的系统有可能用作量子信rn息处理器和模拟器的构造单元。Brown等人实rn现了束缚存“束缚势”中、相距40微米的9Bern离子之、司的直接可控耦合。在一个类似的实验rn中，Harlanaer等人耦合了相距54微米的被束缚rn的40Ca+离子。在他们的系统中，另外的离子起rn天线的作用，来放大离子之间发生的耦合。%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 cavity1 3 and the mechanical modes of a trapped atom4 or macroscopic solid5. Quantized interaction between two motional modes of an individual trapped ion has been achieved by coupling through optical fields6, and entangled motion of two ions in separate locations has been accomplished indirectly through their internal states7. 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 um (similar work is reported in a related paper8). 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 oscillator9"13.

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  • 来源
    《Nature》 |2011年第7337期|p.196-199|共4页
  • 作者

    K. R. Brown; C. Ospelkaus; Y. Colombe; A. C. Wilson; D. Leibfried; D. J. Wineland;

  • 作者单位

    Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA;

    Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA;

    Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA;

    Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA;

    Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA;

    Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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