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公开(公告)号：US11552595B2
公开(公告)日：2023-01-10
申请号：US17007649
申请日：2020-08-31
Applicant: Massachusetts Institute of Technology
Inventor： Jeffrey Chou , Suraj Deepak Bramhavar , Christopher Roberts , Christopher A. D. Roeser , Siddhartha Ghosh
Abstract: Networks of superharmonic injection-locked (SHIL) electronic oscillators can be used to emulate Ising machines for solving difficult computational problems. The oscillators can be simulated or implemented in hardware (e.g., with LC oscillators) and are coupled to each other with links whose connection strengths are weighted according to the problem being solved. The oscillators' phases may be measured with respect to reference signal(s) from one or more reference oscillators, each of which emits a reference signal but does not receive input from any other oscillator. Sparsely connected networks of SHIL oscillators and reference oscillators can be used as Viterbi decoders that do not suffer from the information bottleneck between logic computational blocks and memory in digital computing systems. Sparsely connected networks of SHIL oscillators and reference oscillators can also be programmed to act as Boolean logic gates that operate in both forward and backward directions, enabling multipliers that can factor numbers.
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公开(公告)号：US11320647B2
公开(公告)日：2022-05-03
申请号：US16263071
申请日：2019-01-31
Applicant: Massachusetts Institute of Technology
Inventor： Jeffrey Chou , Vladimir Liberman , Juejun Hu , Yifei Zhang , William Herzog , Jason Stewart , Christopher Roberts
Abstract: Alloys of GeSbSeTe (GSST) can be used to make actively tunable infrared transmission filters that are small, fast, and solid-state. These filters can be used for hyperspectral imaging, 3D LIDAR, portable bio/chem sensing systems, thermal emission control, and tunable filters. GSST is a low-loss phase-change material that can switch from a low-index (n=3), amorphous state to a high-index (n=4.5), hexagonal state with low loss (k
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