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公开(公告)号：US20240362514A1
公开(公告)日：2024-10-31
申请号：US18247456
申请日：2022-03-10
Applicant: Michele Reilly , Seth Lloyd
Inventor： Michele Reilly , Seth Lloyd
Abstract: The present disclosure relates to quantum computing methods and devices, wherein a computation corresponding to a certain desired unitary transformation of the Hilbert space of a quantum system, such as a set of qubits, is implemented by selective application of control pulses in order realize a continuous time quantum computation rather than by decomposing the unitary transformation into a sequence of gates taken from a fixed set of gates. In this way an effective Hamiltonian having an input matrix A encoded as an off-diagonal block connecting a first and a second subspace of the quantum system is then applied alternatingly with some standard Hamiltonian in order to obtain a time evolution corresponding to a given function f applied to the input matrix A. The required control pulses are optimized by means of classical compression techniques such as a deep learning neural network, in order to maximize, during the information loading phase of the computation, the amount of classical information loaded into the system, and, during the computational phase, the number of elementary continuous time quantum transformations, respectively.
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公开(公告)号：US20240354624A1
公开(公告)日：2024-10-24
申请号：US18578086
申请日：2022-07-15
Applicant: Wisconsin Alumni Research Foundation
Inventor： Elena D'Onghia , Paolo Desiati , Kieran Furlong
CPC classification number: G06N10/40 , G21F7/06 , H05K9/0071
Abstract: Aspects of the present disclosure are directed to mitigating qubit decoherence in quantum circuitry in a target area. Using electromagnetic circuitry having coiled circuitry and being coupled to a structure in an elevated position relative to the target area, an electromagnetic field is generated over the target area by driving current through the coiled circuitry. The electromagnetic field may be used to divert radiation propagating in a direction toward the target area, therein electromagnetically shielding the target area and mitigating qubit decoherence in the quantum circuitry.
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公开(公告)号：US20240354621A1
公开(公告)日：2024-10-24
申请号：US18376696
申请日：2023-10-04
Applicant: Hitachi, Ltd.
Inventor： Naoto SATO , Takuro MORI
IPC: G06N10/40
CPC classification number: G06N10/40
Abstract: A quantum program compilation apparatus stores, in a storage device, information regarding a node topology representing a connection relationship between nodes on which a quantum bit is formed and information regarding a control operation that can be performed in a predetermined region of the node topology, and generates, for a quantum program described by a combination of control operations on the quantum bit, a procedure of a movement operation on the quantum bit according to the connection relationship as a procedure of executing the control operation of the quantum program in a predetermined region in the node topology on the basis of each piece of information of the node topology and the control operation.
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公开(公告)号：US20240354616A1
公开(公告)日：2024-10-24
申请号：US18137016
申请日：2023-04-20
Applicant: Anyon Computing Inc.
Inventor： Jie Luo , Xinyu Liu , Hengjiang Ren
Abstract: A quantum node includes one or more communication qubits, one or more interior qubits coupled to the one or more communication qubits with interior tunable couplers, a communication tunable coupler coupled to each of the one or more communication qubits, and a communication resonator coupled to each of the communication tunable couplers. In addition, a distributed quantum computing system includes two or more quantum nodes, and one or more coaxial cables or coplanar waveguides connecting the two or more quantum nodes together using at least one of the communication resonators of the two or more quantum nodes. Entanglement and fabrication methods of the quantum nodes are also described.
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公开(公告)号：US20240346355A1
公开(公告)日：2024-10-17
申请号：US18514115
申请日：2023-11-20
Applicant: Quantinuum LLC
Inventor： Ian Hoffman , William Cody Burton , Curtis Volin
Abstract: Quantum object confinement apparatus comprising confinement corridors and confinement sites, systems comprising such confinement apparatuses, and corresponding methods are provided. A quantum object confinement apparatus of an example embodiment comprises one or more confinement corridors and one or more confinement sites. Each confinement corridor is defined at least in part by respective corridor sequences of control electrodes. The confinement corridors are configured for transport of one or more quantum objects there along. Each confinement site is defined at least in part by respective site sequences of control electrodes. Each confinement site is coupled to a respective confinement corridor such that one or more quantum objects may be transported from the respective confinement corridor to the confinement site and from the confinement site to the respective confinement corridor.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240346350A1
公开(公告)日：2024-10-17
申请号：US18048574
申请日：2022-10-21
Applicant: Massachusetts Institute of Technology , SOCPRA SCIENCES ET GENIE S.E.C., A/S TransferTech Sherbrooke
Inventor： Augustin DI PAOLO , William D. OLIVER , Catherine LEROUX , Alexandre BLAIS
Abstract: A system and method provide two-qubit gates and quantum computing circuits built therefrom. Pairs of qubits are inductively or capacitively coupled using a coupler that is driven using an off-resonant microwave drive. By controlling the drive, the ZZ interaction between the qubits can be precisely controlled. In particular, the interaction may be selectively reduced or suppressed, thereby isolating the qubits from each other, or the interaction may be increased to provide fast, controlled-Z, two-qubit gates with high fidelity. Moreover, qubits and couplers may be arranged according to their resonant frequencies into unit cells and replicated to arbitrary size, thereby forming a quantum computer.
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公开(公告)号：US12112235B2
公开(公告)日：2024-10-08
申请号：US17333439
申请日：2021-05-28
Applicant: IonQ Inc.
Inventor： Stewart Allen , Aleksey Blinov , Felix Tripier
CPC classification number: G06N10/00 , B82Y10/00 , G06N10/40 , H04L9/0852
Abstract: Systems and techniques are provided for a port server for heterogeneous hardware. A port server may include computing devices that may include multiple connection types. Storage devices may be connected to the computing devices. The computing devices may receive a communication from an external computing device intended for a hardware device of a heterogenous system over one of the connection types. The communication may be sent to the hardware device of the heterogenous system using one of the connection types. A response may be received from the hardware device of the heterogenous system over the connection type used to send the communication to the hardware device. The response from the hardware device of the heterogenous system may be sent to the external computing device over the connection type over which the communication was received from the external computing device.
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公开(公告)号：US20240322823A1
公开(公告)日：2024-09-26
申请号：US18533086
申请日：2023-12-07
Inventor： Weicheng KONG , Song Ll , Zhenquan Yang , Junxiu Bu
Abstract: A quantum circuit, a quantum chip, and a quantum computer. The quantum circuit includes qubits, adjacent qubits being coupled, and each of the qubits including: a first capacitor, a first end of the first capacitor being grounded; a second capacitor, a first end of the second capacitor and the first end of the first capacitor being commonly grounded; and a first device, including a first squid and a third capacitor that are connected in parallel, wherein parallel-connected first ends of the first squid and the third capacitor are connected to a second end of the first capacitor, and parallel-connected second ends of the first squid and the third capacitor are connected to a second end of the second capacitor. According to the present disclosure, parameters of at least one of a plurality of capacitors in a qubit circuit can be adjusted, so that the design of the capacitor is more flexible and less spatially limited, which facilitates design and layout of other circuit structures.
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公开(公告)号：US12099902B2
公开(公告)日：2024-09-24
申请号：US17629718
申请日：2020-02-28
Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
Inventor： Atsushi Noguchi , Yasunobu Nakamura
Abstract: A quantum gate device includes a first superconducting circuit which resonates at a first resonance frequency, second superconducting circuit which resonates at a second resonance frequency, and connector which connects these circuits. The first superconducting circuit includes a single first Josephson device, second Josephson device group, and first capacitor. The second Josephson device group includes n Josephson devices connected by a line made of a superconductor. The Josephson energy possessed by each of the n Josephson devices is greater than n times that of the first Josephson device. The quantum gate device further includes a magnetic field applier which applies a static magnetic field to the partial superconducting circuit, and an electromagnetic wave irradiator (first electromagnetic wave irradiator) which irradiates the first superconducting circuit and/or second superconducting circuit with an electromagnetic wave having a difference frequency which is equal to the difference between the first and second resonance frequencies.
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公开(公告)号：US12099901B2
公开(公告)日：2024-09-24
申请号：US18243280
申请日：2023-09-07
Applicant: D-WAVE SYSTEMS INC.
Inventor： Richard G. Harris
CPC classification number: G06N10/00 , G06F15/7867 , G06N10/40
Abstract: Quantum processors having qubits with tunable capacitance are provided. The qubits include Josephson junctions shunted by capacitors and are tunably coupled to capacitance loops such that the resonant frequencies of the qubits and capacitance loops avoid entanglement with each other. Methods for tuning the capacitance of such qubits by varying the coupler's coupling strength are provided. These methods include methods for calibrating qubits' capacitance.
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