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attoAFM/CFM in Dry Dilution Refrigerator
scanning probe microscopy goes dry mK!
Due to recent advances in several fields of solid state physics, there is
a growing interest in performing quantum optics, quantum opto-me-
chanics and other measurements in the sub-100 mK regime. For exam-
ple, since a few years, it has become possible to prepare macroscopic
mechanical oscillators in their groundstate, which opens the door to
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sophisticated experiments which couple such quantum resonators to
quantum dots, single spins in diamond, or high-finesse optical cavities.
Applications range from single-molecule mass detection to magnetic
resonance force detection of single electron spins [Aspelmeyer &
Schwab, New J. Phys. 10, 095001 (2008)]. Other experiments utilize
resonant fluoresence to directly measure the power spectrum of a sin-
gle quantum dot, photo conductivity, Kondo excitons, spin cooling or
nuclei polarization. Also, optically detected magnetic resonance for
magnetometry can benefit from ultra-low temperatures (quantum spin
hall effect, topological insulators).
At the same time, realizing such experimental setups within closed-cy-
cle dilution refrigerators even for free-beam confocal optics is now
possible. Since years, attocube maintains close ties to many leading
scientists in these fields in order to deliver new platforms for ground-
breaking experiments in quantum optics.
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01 Leiden Cryogenics dry dilution refrigerator
02 toploading insert
03 attoCFM I external optics head for free-beam confocal microscopy
04 vector magnet
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05 attoAFM/CFM microscope moulde for mK
06 cryogenic objective
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07 AFM with Akiyama probe
08 sample