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公开(公告)号：US20190205784A1
公开(公告)日：2019-07-04
申请号：US16239319
申请日：2019-01-03
发明人： Christopher MONROE , Marko CETINA , Norbert LINKE
摘要： The disclosure describes various aspects of optical control of atomic quantum bits (qubits) for phase control operations. More specifically, the disclosure describes methods for coherently controlling quantum phases on atomic qubits mediated by optical control fields, applying to quantum logic gates, and generalized interactions between qubits. Various attributes and settings of optical/qubit interactions (e.g., atomic energy structure, laser beam geometry, polarization, spectrum, phase, background magnetic field) are identified for imprinting and storing phase in qubits. The disclosure further describes how these control attributes are best matched in order to control and stabilize qubit interactions and allow extended phase-stable quantum gate sequences.
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公开(公告)号：US20240219951A1
公开(公告)日：2024-07-04
申请号：US18309559
申请日：2023-04-28
发明人： Christopher MONROE , Jiehang ZHANG , David WONG-CAMPOS , Antonios KYPRIANIDIS , Patrick Michael BECKER
CPC分类号： G06E3/005 , B82Y10/00 , B82Y40/00 , G01J1/42 , H01L29/66977 , G01J2001/4247 , G01N21/6458 , G06N10/00
摘要： The disclosure describes an adaptive and optimal imaging of individual quantum emitters within a lattice or optical field of view for quantum computing. Advanced image processing techniques are described to identify individual optically active quantum bits (qubits) with an imager. Images of individual and optically-resolved quantum emitters fluorescing as a lattice are decomposed and recognized based on fluorescence. Expected spatial distributions of the quantum emitters guides the processing, which uses adaptive fitting of peak distribution functions to determine the number of quantum emitters in real time. These techniques can be used for the loading process, where atoms or ions enter the trap one-by-one, for the identification of solid-state emitters, and for internal state-detection of the quantum emitters, where each emitter can be fluorescent or dark depending on its internal state. This latter application is relevant to efficient and fast detection of optically active qubits in quantum simulations and quantum computing.
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公开(公告)号：US20230267356A1
公开(公告)日：2023-08-24
申请号：US18305954
申请日：2023-04-24
摘要： The disclosure describes various aspects of optical control of atomic quantum bits (qubits) for phase control operations. More specifically, the disclosure describes methods for coherently controlling quantum phases on atomic qubits mediated by optical control fields, applying to quantum logic gates, and generalized interactions between qubits. Various attributes and settings of optical/qubit interactions (e.g., atomic energy structure, laser beam geometry, polarization, spectrum, phase, background magnetic field) are identified for imprinting and storing phase in qubits. The disclosure further describes how these control attributes are best matched in order to control and stabilize qubit interactions and allow extended phase-stable quantum gate sequences.
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公开(公告)号：US20220083889A1
公开(公告)日：2022-03-17
申请号：US17448652
申请日：2021-09-23
发明人： Caroline FIGGATT , Aaron OSTRANDER , Norbert M. LINKE , Kevin A. LANDSMAN , Daiwei ZHU , Dmitri MASLOV , Christopher MONROE
摘要： The disclosure describes various aspects related to enabling effective multi-qubit operations, and more specifically, to techniques for enabling parallel multi-qubit operations on a universal ion trap quantum computer. In an aspect, a method of performing quantum operations in an ion trap quantum computer or trapped-ion quantum system includes implementing at least two parallel gates of a quantum circuit, each of the at least two parallel gates is a multi-qubit gate, each of the at least two parallel gates is implemented using a different set of ions of a plurality of ions in a ion trap, and the plurality of ions includes four or more ions. The method further includes simultaneously performing operations on the at least two parallel gates as part of the quantum operations. A trapped-ion quantum system and a computer-readable storage medium corresponding to the method described above are also disclosed.
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公开(公告)号：US20190212766A1
公开(公告)日：2019-07-11
申请号：US16239084
申请日：2019-01-03
发明人： Christopher MONROE , Jiehang ZHANG , David WONG-CAMPOS , Antonios KYPRIANIDIS , Patrick Michael BECKER
CPC分类号： G06E3/005 , G01J1/42 , G01J2001/4247 , G06N10/00
摘要： The disclosure describes an adaptive and optimal imaging of individual quantum emitters within a lattice or optical field of view for quantum computing. Advanced image processing techniques are described to identify individual optically active quantum bits (qubits) with an imager. Images of individual and optically-resolved quantum emitters fluorescing as a lattice are decomposed and recognized based on fluorescence. Expected spatial distributions of the quantum emitters guides the processing, which uses adaptive fitting of peak distribution functions to determine the number of quantum emitters in real time. These techniques can be used for the loading process, where atoms or ions enter the trap one-by-one, for the identification of solid-state emitters, and for internal state-detection of the quantum emitters, where each emitter can be fluorescent or dark depending on its internal state. This latter application is relevant to efficient and fast detection of optically active qubits in quantum simulations and quantum computing.
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