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公开(公告)号：US20210103848A1
公开(公告)日：2021-04-08
申请号：US17063595
申请日：2020-10-05
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
Abstract: Methods, systems, and apparatus for quantum analog-digital conversion. In one aspect, a method includes obtaining a quantum analog signal; applying a hybrid analog-digital encoding operation to the quantum analog signal and a qudit in an initial state to obtain an evolved state of the qudit, wherein the hybrid analog-digital encoding operation is based on a swap operation comprising multiple adder operations; and providing the qudit in the evolved state as a quantum digital encoding of the quantum analog signal.
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公开(公告)号：US11669766B2
公开(公告)日：2023-06-06
申请号：US17719356
申请日：2022-04-12
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
CPC classification number: G06N10/00 , G06F17/14 , H03M1/1245 , H03M1/66
Abstract: Methods, systems, and apparatus for quantum analog-digital conversion. In one aspect, a method includes obtaining a quantum analog signal; applying a hybrid analog-digital encoding operation to the quantum analog signal and a qudit in an initial state to obtain an evolved state of the qudit, wherein the hybrid analog-digital encoding operation is based on a swap operation comprising multiple adder operations; and providing the qudit in the evolved state as a quantum digital encoding of the quantum analog signal.
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公开(公告)号：US20230075687A1
公开(公告)日：2023-03-09
申请号：US17975313
申请日：2022-10-27
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
Abstract: Quantum repeater systems and apparatus for quantum communication. In one aspect, a system includes a quantum signal receiver configured to receive a quantum field signal; a quantum signal converter configured to: sample quantum analog signals from a quantum field signal received by the quantum signal receiver; encode sampled quantum analog signals as corresponding digital quantum information in one or more qudits, comprising applying a hybrid analog-digital encoding operation to each quantum analog signal and a qudit in an initial state; decode digital quantum information stored in the one or more qudits as a recovered quantum field signal, comprising applying a hybrid digital-analog decoding operation to each qudit and a quantum analog register in an initial state; a quantum memory comprising qudits and configured to store digital quantum information encoded by the quantum signal converter; and a quantum signal transmitter configured to transmit the recovered quantum field signal.
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公开(公告)号：US11308415B2
公开(公告)日：2022-04-19
申请号：US17063595
申请日：2020-10-05
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
Abstract: Methods, systems, and apparatus for quantum analog-digital conversion. In one aspect, a method includes obtaining a quantum analog signal; applying a hybrid analog-digital encoding operation to the quantum analog signal and a qudit in an initial state to obtain an evolved state of the qudit, wherein the hybrid analog-digital encoding operation is based on a swap operation comprising multiple adder operations; and providing the qudit in the evolved state as a quantum digital encoding of the quantum analog signal.
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公开(公告)号：US20230274171A1
公开(公告)日：2023-08-31
申请号：US18140478
申请日：2023-04-27
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
CPC classification number: G06N10/00 , G06F17/14 , H03M1/1245 , H03M1/66
Abstract: Methods, systems, and apparatus for quantum analog-digital conversion. In one aspect, a method includes obtaining a quantum analog signal; applying a hybrid analog-digital encoding operation to the quantum analog signal and a qudit in an initial state to obtain an evolved state of the qudit, wherein the hybrid analog-digital encoding operation is based on a swap operation comprising multiple adder operations; and providing the qudit in the evolved state as a quantum digital encoding of the quantum analog signal.
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Patent Agency Ranking
公开(公告)号：US20210097422A1
公开(公告)日：2021-04-01
申请号：US17035333
申请日：2020-09-28
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
Abstract: Methods, systems, and apparatus for preparing a target mixed state of a quantum system. In some aspects a method includes preparing a parameterized ansatz quantum state as an initial approximation to the target mixed state, wherein the parameterized ansatz quantum state comprises a first set of variational parameters and a second set of variational parameters; determining, by classical and quantum computation, values of the first set of variational parameters and second set of variational parameters that minimize a quantum relative entropy of the target mixed state with respect to the parameterized ansatz quantum state; and preparing the parameterized ansatz quantum state with the determined values of the first set of variational parameters and second set of variational parameters as a final approximation to the target mixed state.
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公开(公告)号：US20230419140A1
公开(公告)日：2023-12-28
申请号：US18200827
申请日：2023-05-23
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
Abstract: Quantum repeater systems and apparatus for quantum communication. In one aspect, a system includes a quantum signal receiver configured to receive a quantum field signal; a quantum signal converter configured to: sample quantum analog signals from a quantum field signal received by the quantum signal receiver; encode sampled quantum analog signals as corresponding digital quantum information in one or more qudits, comprising applying a hybrid analog-digital encoding operation to each quantum analog signal and a qudit in an initial state; decode digital quantum information stored in the one or more qudits as a recovered quantum field signal, comprising applying a hybrid digital-analog decoding operation to each qudit and a quantum analog register in an initial state; a quantum memory comprising qudits and configured to store digital quantum information encoded by the quantum signal converter; and a quantum signal transmitter configured to transmit the recovered quantum field signal.
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公开(公告)号：US11704587B2
公开(公告)日：2023-07-18
申请号：US17975313
申请日：2022-10-27
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
Abstract: Quantum repeater systems and apparatus for quantum communication. In one aspect, a system includes a quantum signal receiver configured to receive a quantum field signal; a quantum signal converter configured to: sample quantum analog signals from a quantum field signal received by the quantum signal receiver; encode sampled quantum analog signals as corresponding digital quantum information in one or more qudits, comprising applying a hybrid analog-digital encoding operation to each quantum analog signal and a qudit in an initial state; decode digital quantum information stored in the one or more qudits as a recovered quantum field signal, comprising applying a hybrid digital-analog decoding operation to each qudit and a quantum analog register in an initial state; a quantum memory comprising qudits and configured to store digital quantum information encoded by the quantum signal converter; and a quantum signal transmitter configured to transmit the recovered quantum field signal.
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公开(公告)号：US11526797B2
公开(公告)日：2022-12-13
申请号：US17063492
申请日：2020-10-05
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
Abstract: Quantum repeater systems and apparatus for quantum communication. In one aspect, a system includes a quantum signal receiver configured to receive a quantum field signal; a quantum signal converter configured to: sample quantum analog signals from a quantum field signal received by the quantum signal receiver; encode sampled quantum analog signals as corresponding digital quantum information in one or more qudits, comprising applying a hybrid analog-digital encoding operation to each quantum analog signal and a qudit in an initial state; decode digital quantum information stored in the one or more qudits as a recovered quantum field signal, comprising applying a hybrid digital-analog decoding operation to each qudit and a quantum analog register in an initial state; a quantum memory comprising qudits and configured to store digital quantum information encoded by the quantum signal converter; and a quantum signal transmitter configured to transmit the recovered quantum field signal.
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公开(公告)号：US20220237492A1
公开(公告)日：2022-07-28
申请号：US17719356
申请日：2022-04-12
Applicant: X Development LLC
Inventor： Guillaume Verdon-Akzam
Abstract: Methods, systems, and apparatus for quantum analog-digital conversion. In one aspect, a method includes obtaining a quantum analog signal; applying a hybrid analog-digital encoding operation to the quantum analog signal and a qudit in an initial state to obtain an evolved state of the qudit, wherein the hybrid analog-digital encoding operation is based on a swap operation comprising multiple adder operations; and providing the qudit in the evolved state as a quantum digital encoding of the quantum analog signal.
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