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Nanofab-net: Publishing the unpublished. Credit: M. Bereyhi

Nanofab-net: Preserving nano-fabrication knowledge

— EPFL’s Open Science project Nanofab-net.org, creates an archive for sharing micro- and nanofabrication notes.

© 2020 EPFL

Laser Cooling of a Nanomechanical Oscillator to Its Zero-Point Energy

— Researchers at the Swiss Federal Institute of Technology Lausanne (EPFL) and IBM Research Zurich have recently demonstrated the laser cooling of a nanomechanical oscillator down to its zero-point energy.

An illustration of LiDAR waves. Credit: Johann Riemensberger

Speeding up long-range coherent LiDAR

— LiDAR is a technique used for measuring distances with laser light. In a study published in Nature, researchers at EPFL show a new way to speed up a type of LiDAR engine by using photonic circuits.

Solitons driven by different lasers, can either join each other to form an undivided entity or repeatedly collide into and cross each other. Credit: Weng Wenle/EPFL

Colliding solitons in optical microresonators

— Solitons in optical microresonators are frequently used to generate frequency combs, which have found applications in sensing, telecommunication, and metrology. Now, scientists at EPFL have discovered a novel state of colliding solitons, which reveals interesting properties that can be used in both fundamental studies and practical applications.

Photograph of the silicon nitride photonic chips used for frequency comb and photonic microwave generation. Credit: Junqiu Liu and Jijun He (EPFL).

Photonic microwave generation using on-chip optical frequency combs

— Using integrated photonic chips fabricated at EPFL, scientists have demonstrated laser-based microwave generators. These microwave signals, as well as their optical carriers, could be used in radars, satellite communications and future 5G wireless networks.

Two different quantum optomechanical systems used to demonstrate novel dynamics in backaction-evading measurements. Credit: I. Shomroni, EPFL.

Evading Heisenberg isn't easy

— EPFL researchers, with colleagues at the University of Cambridge and IBM Research–Zurich, unravel novel dynamics in the interaction between light and mechanical motion with significant implications for quantum measurements designed to evade the influence of the detector in the notorious “back action limit” problem.

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