Massachusetts Institute of Technology

California Institute of Technology

Politecnico Di Milano

Marco Colangelo

Karl Kimon Berggren

Matthew D Shaw

Stefano Mariani

Di Zhu

Alain Boldini

Boris Korzh

Andrea Pilla

Matilde Tavanti

A dynamic facade system for controlling shading, characterized in that said facade system comprises a block () composed of an outer glass panel (), an intermediate framework () inside which a series of steel cables () are fixed, and an inner framework () that incorporates an inner glass panel (); said outer glass panel (), said intermediate framework () and said inner framework () being joined to one another: said system comprises modules () fixed on said cables (); said modules () comprise a first outer structure (); said first outer structure () comprises a frame-shaped square base () and at least one first wing (); said at least one first wing () is movably connected to said frame-shaped square base () by means of a first hinge (); characterized in that said first hinge () is made with a shape memory element with passive configuration.

Dynamic facade system for controlling shading

Conventional readout of a superconducting nanowire single-photon detector (SNSPD) sets an upper bound on the output voltage to be the product of the bias current and the load impedance, I&#xd7;Z, where Zis limited to 50&#x3a9; in standard RF electronics. This limit is broken/exceeded by interfacing the 50&#x3a9; load and the SNSPD using an integrated superconducting transmission line taper. The taper is a transformer that effectively loads the SNSPD with high impedance without latching. The taper increases the amplitude of the detector output while preserving the fast rising edge. Using a taper with a starting width of 500 nm, a 3.6&#xd7; higher pulse amplitude, 3.7&#xd7; faster slew rate, and 25.1 ps smaller timing jitter was observed. The taper also makes the detector's output voltage sensitive to the number of photon-induced hotspots and enables photon number resolution.

Impedance matched superconducting nanowire photodetector for single- and multi-photon detection

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Cambridge, MA, United States of America

Marco Colangelo