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Haruhiko Ito Lab
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The lab uses near-field light to manipulate atoms and create nanoscale materials.
AboutAbout the lab
Manipulating atoms with light to create nanoscale materials
The Haruhiko Ito Lab studies "atom photonics," which manipulates atoms with light.
Its goal is to control atoms with light to create materials with nanometer-scale dimensions.
Because ordinary light cannot be focused finely enough, the lab uses "near-field light," which can be confined to the nanoscale, to manipulate gaseous atoms.
The lab designs and builds its own experimental apparatus to suit each research theme.
Key terms
- Near-field light
- Light that arises only in the immediate vicinity of an object. Unlike ordinary light, it can be confined to the nanoscale
- Diffraction limit
- The limit that, no matter how tightly light is focused, a blur determined by its wavelength remains
- Laser cooling
- A technique that uses the force received from laser light to slow or stop the motion of gaseous atoms
ResearchResearch themes
The Haruhiko Ito Lab aims to control atoms with light to create nanoscale materials. Because laser cooling techniques cannot be used for nanofabrication as they are, the lab manipulates gaseous atoms with near-field light, which is not affected by the diffraction limit of light.
*Illustrative imageGuiding atoms through a tunnel of light
The lab studies a "light tunnel" in which near-field light is created in the bore of a hollow optical fiber, guiding atoms while reflecting them. It is also developing a method of depositing atoms using this tunnel.
*Illustrative imageChanging the direction atoms travel
The lab is prototyping an atom deflector that sends atoms into near-field light and changes their direction of motion. The goal is fine fabrication that deposits atoms in nanoscale regions on a substrate.
*Illustrative imageCollecting and cooling atoms
The lab uses funnel-shaped near-field light to collect and cool atoms and turn them into a beam. The aim is to create a dense ensemble of atoms with suppressed motion that interacts well with near-field light.
*Illustrative imageCapturing and detecting atoms
To detect atoms whose positions are finely controlled by near-field light, the lab is developing an atom detector with high sensitivity and high positional resolution. It captures atoms with near-field light near a tiny slit.
MembersFaculty
The Haruhiko Ito Lab consists of faculty members and doctoral, master's, and undergraduate students.As of 2024
- Associate ProfessorHaruhiko ItoPublications ↗
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Cold atoms experiment 04” Tomasz Kawalec / CC BY-SA 4.0 (cropped)
- Guiding atoms through a tunnel of light: “Hollow-core photonic bandgap fiber” Defense Advanced Research Projects Agency (DARPA) / Public domain (cropped)
- Changing the direction atoms travel: “1 Million Ytterbium Atoms Illuminated by a Blue Laser ( )” National Institute of Standards and Technology / Public domain (cropped)
- Collecting and cooling atoms: “Rubidium 85 Magneto optical trap cloud” Rickky678 / Public domain (cropped)
- Capturing and detecting atoms: “1225 site cold cesium atom array” PrestonHuft / CC BY 4.0 (cropped)
- Related lab (Kajikawa Lab): “Metamaterial 'Flat Lens' ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (Nakagawa Lab): “Mechanical delay stage in an optical setup 01” Aksy88 / CC BY-SA 4.0 (cropped)
- Related lab (Shoji Lab): “Optical patchcord” Sunmosk / CC BY 4.0 (cropped)
- Related lab (Koyama Lab): “Laser table” Pawel Nowakowski / CC BY-SA 4.0 (cropped)
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