Flexible optical tactile sensor
    72.
    发明授权

    公开(公告)号:US12135254B2

    公开(公告)日:2024-11-05

    申请号:US17665186

    申请日:2022-02-04

    Abstract: A retrographic sensor includes a flexible transparent structure, a transparent elastomeric pad, and an at least partially reflective layer. The flexible transparent structure may be configured to elastically deform between multiple configurations. At least one light source emits light into the transparent structure. The flexible transparent structure may include one or more markers that are illuminated by the at least one light source. The retrographic sensor may also include a photosensitive detector configured to image the flexible transparent structure and one or more markers. A processor may determine a configuration of the flexible transparent structure based at least in part on an image from the one or more markers.

    Quantum Computing Architecture based on Entangled Fermions

    公开(公告)号:US20240338583A1

    公开(公告)日:2024-10-10

    申请号:US17357270

    申请日:2021-06-24

    CPC classification number: G06N10/40 G01N21/6458 G06N10/20 G21K1/003 G21K1/006

    Abstract: Fermions are the building blocks of matter. Here, we disclose a robust quantum register composed of hundreds of fermionic atom pairs trapped in an optical lattice. With each fermion pair forming a spin-singlet, the qubit is realized as a set of near-degenerate, symmetry-protected two-particle wavefunctions describing common and relative motion. Degeneracy is lifted by the atomic recoil energy, which depends on mass and lattice wavelength, thereby rendering two-fermion motional qubits insensitive to noise of the confining potential. The quantum coherence can last longer than ten seconds. Universal control is provided by modulating interactions between the atoms. Via state-dependent, coherent conversion of free atom pairs into tightly bound molecules, we tune the speed of motional entanglement over three orders of magnitude, yielding 104 Ramsey oscillations within the coherence time. For site-resolved motional state readout, pairs are coherently split into their constituent fermions via a double-well, creating entangled Bell pairs.

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