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Murakawa Lab
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A low-temperature physics lab exploring the mysteries of superfluidity in ultracold helium.
AboutAbout the lab
Exploring quantum mysteries with ultracold helium
Murakawa Lab studies superfluidity in helium at ultralow temperatures and the new phenomena that arise in it.
Helium is the lightest noble gas; even at absolute zero it does not solidify, remaining a liquid that shows strong quantum behavior.
When liquid helium is cooled, it enters a state called superfluidity, in which it flows without friction.
In particular, the lab aims to clarify the properties of Majorana states that appear on the surface of superfluid helium-3.
Key terms
- Superfluidity
- A state in which a liquid at extremely low temperature flows with no viscosity (friction) at all. Properties of quantum mechanics show up in a directly observable form.
- Majorana state
- A special quantum state in which a particle and its antiparticle are the same thing.
- Bose-Einstein condensation
- A phenomenon in which, at extremely low temperatures, a large number of particles all gather at once in the same lowest-energy state.
ResearchResearch themes
Centered on superfluidity in helium at ultralow temperatures, the lab studies quantum liquids whose properties are determined by quantum statistics. Its work covers the surface states of superfluid helium-3 and the properties of liquid helium-4 confined in narrow spaces.
*Illustrative imageMajorana states on the surface of helium-3
The B phase of superfluid helium-3 has attracted attention as a topological superfluid. A new kind of state called a Majorana state, in which a particle and its antiparticle are identical, is expected to appear on its surface, and the lab conducts research to clarify its properties.
*Illustrative imageCondensation in confined helium-4
The lab studies localized Bose-Einstein condensation that appears in liquid helium-4 confined in narrow spaces.
MembersFaculty
The members of Murakawa Lab consist of faculty and master's students.As of 2020
- Associate ProfessorMurakawa SatoshiPublications ↗
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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.
- Top image: “Liquid helium superfluid phase” Bmatulis / Public domain (cropped)
- Majorana states on the surface of helium-3: “Helium-glow” Jurii / CC BY 3.0 (cropped)
- Condensation in confined helium-4: “Dilution Fridge 008 16K” OJB Quantum / CC BY 4.0 (cropped)
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