News : Research

April 06 2020

Quantum many-body problem solved to order 15

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The finding is a major one for theoretical physics: Researchers from Irig, Institut Néel, and the Flatiron Institute (US) designed an algorithm that solves the quantum many-body problem to order 15. The quantum many-body problem describes phenomena at the atomic scale that standard approaches (“mean field approximation”) cannot model. One such example is the fact […] >>

April 06 2020

CMOS electronics and quantum devices get ready to move in together

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Digital and analog electronics could soon be sharing space with a quantum system on a FD-SOI substrate cooled to 110 mK. Sound strange? Researchers from Leti and Irig recently designed a circuit with these unusual characteristics and presented it at a conference in February. It is only at the proof-of-concept stage. However, it does meet […] >>

April 06 2020

FD-SOI: Leti’s transistor model recognized as a standard semiconductor devicece

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Leti’s FD-SOI transistor model, used by companies like Samsung and STMicroelectronics, was recently recognized by the Si2 Compact Model Coalition, a working group made up of 30 international semiconductor industry stakeholders. The fact that Leti’s L-UTSOI model is now recognized as a standard model guarantees that it will be maintained and updated to meet the […] >>

April 06 2020

AFM uplevels from cantilever to ring probe

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Until recently, it was widely considered that the atomic force microscope (AFM) had hit a ceiling in terms of resolution. Researchers from Leti, CNRS, and Vmicro changed that with a new type of resonator. The conventional vibrating-cantilever-style probe, which tops out at around 1 MHz, has been replaced by a micrometric optically-excited silicon ring that […] >>

April 06 2020

Active interposer supercharges high-performance circuits

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Some IC designers prefer to distribute their circuits’ functions across several physical bricks interconnected by a passive interposer. The approach is not new, but now the interposer is. Leti recently added logic (such as clock, I/O, voltage conversion, and other functions), making the interposer active. The institute designed, fabricated, assembled, and tested one with advanced […] >>
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