Projects per year
Abstract
Quantum entanglement is a phenomenon whereby systems cannot be described independently of each other, even though they may be separated by an arbitrarily large distance 1 . Entanglement has a solid theoretical and experimental foundation and is the key resource behind many emerging quantum technologies, including quantum computation, cryptography and metrology. Entanglement has been demonstrated for microscopic-scale systems, such as those involving photons 2-5, ions 6 and electron spins 7, and more recently in microwave and electromechanical devices 8-10 . For macroscopic-scale objects 8-14, however, it is very vulnerable to environmental disturbances, and the creation and verification of entanglement of the centre-of-mass motion of macroscopic-scale objects remains an outstanding goal. Here we report such an experimental demonstration, with the moving bodies being two massive micromechanical oscillators, each composed of about 10 12 atoms, coupled to a microwave-frequency electromagnetic cavity that is used to create and stabilize the entanglement of their centre-of-mass motion 15-17 . We infer the existence of entanglement in the steady state by combining measurements of correlated mechanical fluctuations with an analysis of the microwaves emitted from the cavity. Our work qualitatively extends the range of entangled physical systems and has implications for quantum information processing, precision measurements and tests of the limits of quantum mechanics.
Original language | English |
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Pages (from-to) | 478-482 |
Number of pages | 5 |
Journal | Nature |
Volume | 556 |
DOIs | |
Publication status | Published - 26 Apr 2018 |
MoE publication type | A1 Journal article-refereed |
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Dive into the research topics of 'Stabilized entanglement of massive mechanical oscillators'. Together they form a unique fingerprint.Projects
- 5 Finished
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Quantum squeezing and entanglement in microwave optomechanical systems
Ockeloen-Korppi, C.
01/09/2017 → 31/08/2020
Project: Academy of Finland: Other research funding
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Quantum mechanics of mechanics
Sillanpää, M., Damskägg, E., Mishra, H., Mercier de Lepinay, L., Liu, Y., Välimaa, A., Wang, C. & Rej, E.
01/09/2017 → 31/08/2021
Project: Academy of Finland: Other research funding
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HOT WP2
Ockeloen-Korppi, C., Mercier de Lepinay, L., Sillanpää, M., Wang, C. & Zhou, J.
01/01/2017 → 30/06/2021
Project: EU: Framework programmes funding
Equipment
Press / Media
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Einstein's 'spooky action' goes massive
25/04/2018
2 items of Media coverage
Press/Media: Media appearance
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Entanglement observed in near-macroscopic objects
25/04/2018
1 item of Media coverage
Press/Media: Media appearance