Quantum Condensed Phases Research Team

We will develop techniques to manipulate single electrons and ions trapped at an extremely clean surface of liquid helium, which will be utilized to fabricate quantum effect devices.  This includes lateral confinement techniques and control of quantum transitions between discrete energy levels due to the abovementioned confinement and due to surface states.  In addition, superfluidity, a typical emergent phenomenon, will be studied in the context of topological properties associated with a spontaneous symmetry break.

Research Fields

Physics

Research Subjects

• Single electron transport on a surface of liquid helium
• Anomalous transport phenomena of electrons on helium liquids under microwave irradiation
• Emergent phenomena in superfluid helium liquids

Publications

1. Ikegami, H., Akimoto, H., Rees, D. G., and Kono, K.:
   "Evidence for Reentrant Melting in a Quasi-One-Dimensional Wigner Crystal"
   Phys. Rev. Lett. 109, 236802 (2012).
2. Konstantinov, D., Chepelianskii, A., and Kono, K.:
   "Resonant Photovoltaic Effect in Surface State Electrons on Liquid Helium"
   J. Phys. Soc. Jpn. 81 093601 (2012).
3. Rees, D. G., Totsuji, H., and Kono, K.:
   "Commensurability-Dependent Transport of a Wigner Crystal in a Nanoconstriction"
   Phys. Rev. Lett. 108, 176801 (2012).
4. D. G. Rees, I. Kuroda, C. A. Marrache-Kikuchi, M. Höfer, P. Leiderer, and K. Kono.:
   "Point-Contact Transport Properties of Strongly Correlated Electrons on Liquid Helium"
   Phys. Rev. Lett. 106, 026803 (2011).
5. Konstantinov D. and Kono K.:
   "Photon-Induced Vanishing of Magnetoconductance in 2D Electrons on Liquid Helium"
   Phys. Rev. Lett. 105, 226801 (2010).
6. Konstantinov D, Dykman MI, Lea MJ, Monarkha YP, and Kono K.:
   "Resonant Correlation-Induced Optical Bistability in an Electron System on Liquid Helium"
   Phys. Rev. Lett. 103, 096801 (2009).