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公开(公告)号：US20230153676A1
公开(公告)日：2023-05-18
申请号：US17995825
申请日：2021-04-09
Applicant: The University of Chicago , Northwestern University
Inventor： Danna E. Freedman , David D. Awschalom , Dan W. Laorenza , Majed S. Fataftah , Sam L. Bayliss , Berk Diler , Peter J. Mintun
CPC classification number: G06N10/40 , C07F11/00 , C07F7/2208 , C07B2200/13
Abstract: A molecular-spin qubit is formed from a coordination complex having a plurality of strong-field ligands bound to a metal-atom center. The ground state has non-zero spin, and the resulting ground-state magnetic sublevels are separated by microwave or millimeter-wave frequencies, even in the absence of an external field. Two of these sublevels may be used as a quantum resource for quantum information processing, quantum communication, quantum memory, sensing, and other applications. Optical pumping to an excited state may be used to spin-polarize the molecular-spin qubit, and to measure its population by detecting photoluminescence. The energy-level structure of the metal-atom center can be modified due to its interaction with the ligands, therefore allowing the molecular-spin qubit to be “chemically tuned” based on the number and type of ligands. Ensembles of these molecular-spin qubits can be controllably deposited on a surface, or otherwise integrated into devices and structures.
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公开(公告)号：US20230314374A1
公开(公告)日：2023-10-05
申请号：US17998316
申请日：2021-05-10
Applicant: University of Chicago
Inventor： Kevin C. Miao , David D. Awschalom
Abstract: The disclosure is directed to devices, systems, and methods for a generation of a decoherence-protected subspace in a quantum system. The decoherence-protected subspace provides the quantum system with reduced sensitivity to environmental magnetic, electric, and thermal noises. Quantum information operation based on the quantum system can be performed while this decoherence-protected subspace is maintained.
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公开(公告)号：US20220155621A1
公开(公告)日：2022-05-19
申请号：US17435987
申请日：2020-03-04
Applicant: The University of Chicago
Inventor： Kevin C. Miao , Samuel J. Whiteley , David D. Awschalom
IPC: G02F1/03
Abstract: The disclosure is directed to devices, systems, and methods for performing quantum state-mediated microwave-to-optical energy conversion. Such quantum state-mediated energy conversion may be achieved via coherent interactions between an optical excitation and microwave electric field mediated by various quantum states in a defect embedded in a crystalline lattice. Such energy conversion enables coherent electro-optical modulation of optical emission from the defect, microwave-optical transduction, optical detection of microwave, and optical frequency mixing in the optical emission from the defect. The optical emission from the defect maintains and carries quantum coherence in the defect. Such devices and methods may be applied in quantum information processing systems.
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公开(公告)号：US20220179284A1
公开(公告)日：2022-06-09
申请号：US17438600
申请日：2020-03-13
Applicant: The University of Chicago
Inventor： Alexandre Bourassa , Christopher P. Anderson , David D. Awschalom
Abstract: This disclosure relates to optical devices for quantum information processing applications. In one example implementation, a semiconductor structure is provided. The semiconductor structure may be embedded with single defects that can be individually addressed. An electric bias and/or one or more optical excitations may be configured to control the single defects in the semiconductor structure to produce single photons for use in quantum information processing. The electric bias and optical excitations are selected and adjusted to control various carrier processes and to reduce environmental charge instability of the single defects to achieve optical emission with wide wavelength tunability and narrow spectral linewidth. Electrically controlled single photon source and other electro-optical devices may be achieved.
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