Author
Listed:
- Xiaobo Zhu
(NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya
Present address: Institute of Physics, Chinese Academy of Sciences, Beijing, China.)
- Yuichiro Matsuzaki
(NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya)
- Robert Amsüss
(NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya
Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien)
- Kosuke Kakuyanagi
(NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya)
- Takaaki Shimo-Oka
(Graduate School of Engineering Science, Osaka University)
- Norikazu Mizuochi
(Graduate School of Engineering Science, Osaka University)
- Kae Nemoto
(National Institute of Informatics)
- Kouichi Semba
(NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya
National Institute of Informatics
Present address: National Institute of Information and Communications Technology, Tokyo, Japan.)
- William J. Munro
(NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya)
- Shiro Saito
(NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya)
Abstract
The hybridization of distinct quantum systems has opened new avenues to exploit the best properties of these individual systems. Superconducting circuits and electron spin ensembles are one such example. Strong coupling and the coherent transfer and storage of quantum information has been achieved with nitrogen vacancy centres in diamond. Recently, we have observed a remarkably sharp resonance (~1 MHz) at 2.878 GHz in the spectrum of flux qubit negatively charged nitrogen vacancy diamond hybrid quantum system under zero external magnetic field. This width is much narrower than that of both the flux qubit and spin ensemble. Here we show that this resonance is evidence of a collective dark state in the ensemble, which is coherently driven by the superposition of clockwise and counter-clockwise macroscopic persistent supercurrents flowing in the flux qubit. The collective dark state is a unique physical system and could provide a long-lived quantum memory.
Suggested Citation
Xiaobo Zhu & Yuichiro Matsuzaki & Robert Amsüss & Kosuke Kakuyanagi & Takaaki Shimo-Oka & Norikazu Mizuochi & Kae Nemoto & Kouichi Semba & William J. Munro & Shiro Saito, 2014.
"Observation of dark states in a superconductor diamond quantum hybrid system,"
Nature Communications, Nature, vol. 5(1), pages 1-6, May.
Handle:
RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4524
DOI: 10.1038/ncomms4524
Download full text from publisher
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4524. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.