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Morinaga Lab
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A lab that explores quantum physics through experiments that manipulate light and atoms.
AboutAbout the lab
Manipulating atoms and light to explore quantum properties.
The Morinaga Lab studies quantum physics and quantum electronics.
Its work includes developing single-photon sources using optical fibers, atom optics, which uses atomic waves instead of light, and precision spectroscopy and laser cooling of hydrogen atoms.
The lab pursues its research on hydrogen atoms in collaboration with the Katsuragawa Lab, the Ohae Lab, and the Iwakuni Lab.
The lab accepts lab visits at any time.
Key terms
- Single-photon source
- A light source that emits photons, the particles of light, one at a time. In quantum communication, single photons are used as carriers of information.
- Atom optics
- Optics that uses atoms (atomic waves) instead of light. It deals with atomic-wave lenses and mirrors, holography, and related topics.
- Optical tweezers
- A technique for capturing small objects such as light emitters using light. In this lab, it is planned for placing an emitter on the tip of a fiber.
ResearchResearch themes
The Morinaga Lab carries out experiments that manipulate light and atoms in the fields of quantum physics and quantum electronics. Its research themes include single-photon sources for quantum communication, atom optics, precision spectroscopy of hydrogen atoms, and the manipulation of microscopic objects.
*Illustrative imageCoupling optical fibers with single-photon sources
To couple the single photons used in quantum communication into an optical fiber efficiently, the lab plans a method of using optical tweezers to trap a light emitter and place it on a fiber whose tip has been tapered thin. The lab has also developed its own fiber-processing machine.
*Illustrative imageAtom optics: manipulating atoms as waves
This is optics that uses atomic waves instead of light. The lab works on atomic-wave lenses and mirrors, quantum reflection, atom holography, and methods for trapping and cooling atoms.
*Illustrative imagePrecision spectroscopy and laser cooling of hydrogen atoms
In collaboration with the Katsuragawa Lab, the Ohae Lab, and the Iwakuni Lab, the lab has started research on precision spectroscopy and laser cooling of hydrogen atoms. A point described as noteworthy is that if antihydrogen atoms are laser-cooled, trapped, and then released, it would be possible to determine whether gravity between matter and antimatter is attractive or repulsive.
*Illustrative imageMoving small objects with asymmetric vibration
This research applies a sawtooth waveform to an expanding and contracting piezoelectric element to move particles or actuators on a stage in one direction. At present it stays within classical mechanics, and the lab plans to extend it in the future to quantum control mediated by vacuum fluctuations.
MembersFaculty
- Makoto Morinaga
VoicesStudent voices
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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: “Single Photon Detectors ( )” National Institute of Standards and Technology / Public domain (cropped)
- Coupling optical fibers with single-photon sources: “Optical tweezers rays4” Gershonavi / Public domain (cropped)
- Atom optics: manipulating atoms as waves: “Laser used to cool atoms with light” Noahlw / CC BY 4.0 (cropped)
- Precision spectroscopy and laser cooling of hydrogen atoms: “Laser Cooling Thermometer” The Quantum Atlas / CC BY-SA 4.0 (cropped)
- Moving small objects with asymmetric vibration: “Rotary piezoelectric motor ANR101v” Jaanus.kalde / CC BY-SA 3.0 (cropped)
- Related lab (Zhang Lab): “ALE4077” Alessiocoser / CC BY 4.0 (cropped)
- Related lab (Haruka Tanji Lab): “Optical cavities” No machine-readable author provided. Fffred~commonswiki assumed (based on copyright claims). / Public domain (cropped)
- Related lab (Musha Lab): “Baffled LIGO Scientists” Nkij / CC BY 4.0 (cropped)
- Related lab (Ueno Lab): “Propagation of light through the core of an optical fiber. Macro visualization.” AZToshkov / CC BY-SA 3.0 (cropped)
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