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Quantum Optics

A schmatic showing a parabola-shaped tip close to two molecules with indicated spin, adsorbed to a substrate. A circuit connects the tip to the substrate, with a voltage supply and current measurement device attached.
Photo: Manassen & al [Phys Rev B 105, 235438 (2022)], Fig. 1
Two TEMPO (2,2,6,6-tetramethyl-piperidine-1-oxyl) molecules with unpaired electrons are loosely adsorbed on a conducting substrate R. A tip L is scanned and held at a relative voltage V. The tunneling current I passes in parallel via the molecules and causes spin flips. The current fluctuation spectrum I(f) reveals the level structure of the spins.

What we research here in the field of Quantum Optics:

  • mechanical forces and heat transfer via electromagnetic fluctuations, also known as dispersion,  Casimir or vacuum forces

  • ultracold Bose gases and their finite-temperature coherence properties

  • small quantum systems that are open, i.e., in contact with environments (see figure)

A schmatic showing a parabola-shaped tip close to two molecules with indicated spin, adsorbed to a substrate. A circuit connects the tip to the substrate, with a voltage supply and current measurement device attached.
Photo: Manassen & al [Phys Rev B 105, 235438 (2022)], Fig. 1
Two TEMPO (2,2,6,6-tetramethyl-piperidine-1-oxyl) molecules with unpaired electrons are loosely adsorbed on a conducting substrate R. A tip L is scanned and held at a relative voltage V. The tunneling current I passes in parallel via the molecules and causes spin flips. The current fluctuation spectrum I(f) reveals the level structure of the spins.

If you want to read more on the topic, you can start here:

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