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Terahertz Time Domain Spectroscopy

All articles tagged with #terahertz time domain spectroscopy

science2 years ago•3 min saved

Unveiling Hidden Properties of Quantum Materials with Ultrafast Laser Probing

Researchers at the University of California San Diego have used an advanced optical technique to uncover hidden properties of a quantum material called Ta2NiSe5 (TNS). By shining a laser on the material, they were able to observe anomalous terahertz light amplification, revealing some of the hidden properties of the TNS exciton condensate. This work could have implications in the emerging field of entangled light sources utilizing quantum materials.

via Phys.org|

#exciton-condensate #optical-technique #quantum-materials

physics2 years ago•3 min saved

Observation of Fermionic Quasiparticles Vanishing in Slow Motion

Researchers have observed fermionic quasiparticles slowly "disappearing" near a quantum phase transition in a heavy-fermion compound, marking the first direct observation of this phenomenon. Unlike bosons, fermions are not typically involved in phase transitions. The study used terahertz time-domain spectroscopy to measure the critical slowing near the transition and extract a parameter known as the critical exponent. This research provides insights into the stability of fermionic quasiparticles and could have implications for quantum information technology.

via physicsworld.com|

#fermionic-quasiparticles #heavy-fermion-compounds #physics