Collaborative work

TRiAC explores many-body quantum systems using laser-cooled ions and will produce novel ion configurations by applying microfabrication technology to ion-trap electrodes, perform quantum simulation of many-body quantum systems using such ions and investigate generation of superradiance with ions. This study is significant not only for fundamental Physics but also for a large-scale quantum information processing and novel atomic clocks.

New joint publication on "Creation of double-well potentials in a surface-electrode trap towards a nanofriction model emulator" in Quantum Science and Technology 6 024010 (2021)

A new paper was published in the frame of the international joint research lab "TRiAC". The paper "Creation of double-well potentials in a surface trap towards a nanofriction model emulator" published in Qunatum Science and Technology demonstrates a surface electrode trap that can be used as a nanofriction emulator and for "studies of many-body dynamics of interacting systems" using 40Ca+ ions.

The paper can be found here.

Six 40Ca+ ions (left) trapped in the surface trap (right). The pictures are taken and modified from the paper, Fig. 4 & 5.

Microfabricated ion traps

Gold coated sapphire chip with surface-electrode ions trap to store parallel strings of coupled ions

One example of our groups' joint efforts are microfabricated ion traps. The design seen in the video was done by the Osaka group and published in an early work[1]. The gold chips were fabricated on a three-inch sapphire wafer in the cleanroom facility at PTB and send to Japan for trap operation and characterization. The new design aims to trap one or two parallel ion strings as close as 32 µm to perform quantum simulations of coupled spin systems or the emulation of a well-controlled two-dimensional nanofriction model[2].


  • [1] U. Tanaka et al.: Design of a surface electrode trap for parallel ions strings, J. Phys. B: At. Mol. Opt. Phys. 47, 035301 (2014)
  • [2] J. Kiethe et al: Probing nanofriction and Aubry-type signatures in a finite self-organized system, Nat. Commun. 8, 15364 (2017)

    Impressions of past exchanges