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229
results.
Updated on
15/07/2026 [08:25:00]
Results 50 to 75 of 229
Absstract of: WO2026146687A1
According to various embodiments of the present disclosure, a method performed by a first node is provided, the method comprising the steps of: transmitting, to a second node, information related to initial fidelity and target fidelity of an Einstein-Podolsky-Rosen (EPR) pair, the number of rounds in which an entanglement distillation protocol (EDP) is performed, and an EDP type; transmitting, to the second node, information related to the entanglement state of the EPR pair; determining an optimal EDP mode for optimal EPR yield; transmitting, to the second node, information about the optimal EDP mode for the optimal EPR yield; and performing the EDP on the basis of the optimal EDP mode.
Absstract of: WO2026146333A1
There is provided a computer-implemented hybrid variational method of training a parametrised quantum circuit configuration to perform Gibbs state generation of a parametrised Hamiltonian.
Absstract of: WO2026146480A1
A quantum computing method and system optimize technical processes involving the Traveling Salesman Problem (TSP). The method initializes N quantum registers, each corresponding to a task position and comprising N qubits. A W state is generated in each register, representing an equally distributed superposition of quantum states. Controlled operations encode the technical costs of transitions between tasks as phase shifts between qubits in adjacent registers. Optionally, penalty phase shifts are applied to qubits in different registers corresponding to the same task. The state of the quantum registers is measured, and the process is repeated over multiple trials to identify the most frequently measured state, providing a target task sequence. The system includes quantum registers, a superposition generator, a phase encoder, a measurement unit, and a processor to perform the method. Applications include manufacturing, data transfer, and genome sequencing, optimizing technical costs such as energy expenditure, bandwidth consumption, and DNA segment overlap.
Absstract of: WO2026146248A1
According to an example embodiment, a method (200) for controlling calibration of a quantum computer (110) is provided, the method (200) to be carried out by a calibration control apparatus and comprising: modeling (202) dependencies between a plurality of calibration tasks pertaining to the quantum computer (110) by a directed calibration graph comprising a plurality of nodes that each represent a respective one of said plurality of calibration tasks and a plurality of directed edges that each connect a pair of nodes and indicate a dependency of a calibration task represented by the head of the respective edge on a calibration task represented by the tail of the respective edge; and carrying out (204) a calibration procedure via executing the plurality of nodes in a dependency order defined in the calibration graph, where execution of each node comprises carrying out the calibration task represented by the respective node, wherein the plurality of nodes may comprise one or more adaptation nodes, where execution of an adaptation node further comprises deriving (206) a node status value that indicates either successful execution or an error condition and where the calibration procedure proceeds from the respective adaptation node to a subsequent node selected in dependence of the node status value.
Absstract of: AU2024409733A1
In some implementations, a photonic integrated circuit (PIC) can include a plurality of input ports to input light, such as quantum light (e.g., single photons) or bright light. In addition, the PIC may include a waveguide network that includes a crossing network to interfere the light. The light can be phase shifted using segmented phase shifters. The photonic integrated circuit can further include output ports to output the light.
Absstract of: WO2026148345A1
A signal modification unit configured for processing high-bandwidth signals includes at least one signal input configured to receive a high-bandwidth signal. The signal modification unit includes a tunable control component configured to adjust one or more parameters for modifying the high-bandwidth signal, wherein the one or more parameters are associated with nonlinear modification of the high-bandwidth signal. The signal modification unit includes one or more waveguide components configured to modify the high-bandwidth signal to generate a modified signal based in part upon the one or more parameters. The signal modification unit includes at least one signal output configured to provide the modified signal as an output of the signal modification unit. The signal modification unit allows for feature extraction of spectral bands and may be used to replace parts of digital neural networks.
Absstract of: WO2026145195A1
Provided in the present invention are a superconductor-based coaxial cable of a dilution refrigerator, a dilution refrigerator, and a superconducting quantum computing device. The dilution refrigerator comprises at least a first temperature layer, a second temperature layer, a third temperature layer and a fourth temperature layer. The coaxial cable comprises a conductor layer, an insulating layer and a first shielding layer, the first shielding layer being arranged on the insulating layer at a first thickness. The coaxial cable further comprises a first coaxial cable segment disposed in the first temperature layer, a second coaxial cable segment disposed in the second temperature layer, a third coaxial cable segment disposed in the third temperature layer, and a fourth coaxial cable segment disposed in the fourth temperature layer, wherein the first thickness and the material of the parts of the first shielding layer at the first coaxial cable segment, the second coaxial cable segment, the third coaxial cable segment and the fourth coaxial cable segment are determined on the basis of a preset combination method.
Absstract of: EP4773047A1
An information processing program for causing a computer to execute a process, the process includes: obtaining a decomposition number of a Trotter decomposition approximating a quantum unitary corresponding to an Ising model; and setting a quantum circuit expressing a formula of the Trotter decomposition by one or more first partial circuits and a second partial circuit, the one or more first partial circuits being of a first count one less than the obtained decomposition number and each including an Rz gate that represents a rotation action about a Z-axis on a qubit, the second partial circuit being free of the Rz gate and coupled to a rear of the one or more first partial circuits.
Absstract of: JP2026114875A
【課題】量子コンピューターは、通常のコンピューターで解くには複雑な問題を、量子力学の原理を利用して解くことを目的としたもので、色々な方式が研究されているが、実用化には至っていない。【解決手段】これまでに研究されている多くの量子コンピューターの二進法の０と１を電子のオンとオフで表す方式ではなく、電子の正荷と負荷で表す方式とした上で、中性子プラズマを用いて計算する。中性子プラズマは、正荷にも負荷にもなれるため、計算に使う全ての電子が０にも１にもなれることになり、量子コンピューターの特徴である超並列処理が可能となる。【選択図】なし
Absstract of: GB2703030A
A system for tuning the resistance of a Josephson Junction (JJ) (Fig. 2: Rjj) comprises a source of tuning voltage (Fig. 2: 11) and a measurement unit, the source being configured to apply the tuning voltage which is an alternating voltage across the JJ (Fig. 2: 13) to allow the JJ to reach a target resistance and the measurement unit configured to measure the resistance of the JJ using the tuning voltage. The voltage source may be a lock-in amplifier and source measure unit (SMU). The source voltage may be applied by across the JJ (Fig. 2: 13) and a resistive load (Fig. 2: 19) and the resistance of the JJ is determined by measuring the potential drop across the load resistor. The temperature of the JJ may be controlled. A smaller probe voltage Vp may be used to probe the resistance of the JJ and a larger tuning voltage Vt is used to induce junction tuning. In an initial calibration stage the junction resistance may be measured at room temperature using both Vp 31 and Vt 33 after which the temperature is increased to 80℃ and the resistance is measured using Vp 39 before switching to Vt 41 to tune the JJ to a target resistance. The JJ may then be cooled 45 to room temperature and the final resistance measured at Vp. The resistance may continue to increase after the tuning voltage has been removed so a time delay may be inserted after the end of the application of the tuning voltage. After the resistance has been tuned, the JJ is cooled to cryogenic temperatures, retaining th
Absstract of: US2025077930A1
Calculation control for hybrid computing of Hamiltonian eigensolutions may be provided by selecting K basis states from an ansatz space of a chemical system, wherein the ansatz space is generated by a quantum computer system and includes fewer basis states than a whole basis space for the chemical system, wherein the K basis states are selected according to a selection protocol to define a core space for the chemical system; computing, via an eigensolver provided by a classical computer system, an eigensolution for the chemical system from the core space; and outputting the eigensolution for the chemical system.
Absstract of: US2025077921A1
0000 Aspects of the disclosure include decomposing a matrix for a Clifford unitary into a product of first and second involution matrices, determining first symplectic matrix that transforms first involution matrix into a first matrix, a first Clifford unitary matrix being described by first symplectic matrix, and determining second symplectic matrix that transforms second involution matrix into second matrix, a second Clifford unitary matrix being described by second symplectic matrix. Aspects include, responsive to first matrix being a diagonal matrix, setting a second number to size of first matrix and setting a second sequence to include the second number of generalized S gates, and responsive to second matrix being a diagonal matrix, setting a first number to size of second matrix and setting a first sequence to include the first number of generalized S gates. Aspects include executing first sequence, second sequence, and a Pauli unitary P on the quantum computer.
Absstract of: WO2025046517A1
The present disclosure describes a method that involves receiving a description of a logical quantum circuit to be executed on a quantum computing system, determining a property of the logical quantum circuit and selecting a quantum error correction code from two or more candidate QECCs based on the determined property of the logical quantum circuit, in which the two or more candidate QECCs are capable of implementing the logical quantum circuit as physical quantum circuits executable by the quantum computing system.
Absstract of: EP4773790A1
A quantum device (100) includes a quantum chip (10) including a substrate (11) having a first surface (12) and a second surface (13), a quantum bit (15) provided on the first surface, and an electrode (18) electrically connected to the quantum bit and provided on the second surface, a mounting portion (30) having a mounting surface (32) on which a peripheral edge portion of the quantum chip is mounted, the mounting portion having a linear expansion coefficient different from that of the substrate, a conductor pin (40) having a tip end in contact with the electrode, and a holding portion (50) fixed to the mounting portion, the holding portion holding the conductor pin and having a linear expansion coefficient different from that of the substrate, wherein the electrode has a shape having a longitudinal direction in a direction radially extending from a center of the substrate in plan view, and the quantum chip is mounted on the mounting surface by inserting a protrusion (31) provided on one of the substrate and the mounting surface into a hole (19) provided on another of the substrate and the mounting surface, the hole having a longitudinal direction in a direction extending radially in plan view.
Absstract of: US2025079034A1
Example embodiments provide quantum computers, laser light delivery systems for quantum computers, and methods for delivering laser light from lasers of quantum computers to atomic object confinement apparatuses of quantum computers. In an example embodiment, a quantum computer comprises an atomic object confinement apparatus, a laser, a cylindrical guide positioned such that a first end of the cylindrical guide is adjacent the laser and a second end of the cylindrical guide is adjacent the atomic object confinement apparatus, and an optical fiber cable helically wrapped around the cylindrical guide and spanning from the first end to the second end. The optical fiber cable is configured to deliver laser light generated by the laser to the atomic object confinement apparatus. A pitch of the helically wrapped optical fiber cable is selected to provide a desired effective bend radius of the optical fiber cable to strip higher-order modes of the laser light.
Absstract of: US2025076198A1
A controller of an atomic system controls operation of potential sources to cause potential generating signals to be provided. Application of the potential generating signals to respective potential generating elements causes performance of a split operation causing confinement of a first subset of atomic objects of an object crystal in a first potential well and a second subset of atomic objects of the object crystal in a second potential well. The first subset consists of one or more atomic objects. The object crystal includes atomic objects of at least two species. The controller controls operation of manipulation sources to cause manipulation signals to be incident on the first subset. The controller receives a sensor signal generated by a photodetector configured to capture fluorescence signals generated by the first subset. The controller processes the sensor signal to determine a respective species of at least one atomic object of the first subset.
Absstract of: WO2025045701A1
The invention relates to a quantum computer, which comprises a sample (21) with paramagnetic centres, preferably in the form of NV centres (22), and a pumping radiation source (1). The pumping radiation source (1) irradiates, by means of an optical system, the paramagnetic centres and/or NV centres (22) with pumping radiation (54) of a pumping radiation wavelength (λpmp) over a first optical partial path. The optical system detects the fluorescent radiation (33) of the paramagnetic centres (22) and guides the fluorescent radiation (33) to a photodetector (50) and/or a single-photon detector (50) over a second optical partial path. The first optical partial path differs from the second optical partial path at least in some portions. The photodetector (50) and/or the single-photon detector (50) convert the fluorescent signal of the fluorescent radiation (33) of the paramagnetic centres (22) into at least one measurement signal and/or at least one measurement value. The quantum computer uses this at least one measurement signal and/or this at least one measurement value to carry out a quantum operation. The device is characterised in that the quantum computer has an optical spatial filter in the second optical partial path.
Absstract of: GB2703019A
A messaging system in a real-time system adapted for communicating with a plurality of quantum devices 207a-207d (e.g. registers of qubits/qudits or coupling devices). The messaging system has one or more aggregator nodes 205, and a plurality of real-time units, communicatively coupled to the quantum devices, as respective leaf nodes 206a-206d. The messaging system is configured to notify a target node 204 of a status of each leaf node in a subset of the leaf nodes. Each aggregator node receives respective notifications from one or more of its child nodes, each notification indicating a status of one or more leaf nodes of the subset of the leaf nodes. Responsive to receipt of the respective notifications from the one or more of its child nodes the aggregator node generates an aggregated notification. The aggregator transmits the aggregated notification to a grandparent node of its child nodes. The grandparent node may be the target node, or it may be descendant of the target node. The messaging system may further be configured to transmit, for concurrent receipt, a message from the target node to each of the leaf nodes in the subset of leaf nodes. Figure 2
Absstract of: WO2026106593A1
Parametric devices for use in, for instance, quantum computing systems are provided. In one implementation, the parametric device includes a bridge circuit coupled between a first resonator and a second resonator. The bridge circuit includes a plurality of Josephson junction arrays. The parametric device includes a DC flux bias coupled to the bridge circuit through the first resonator. The parametric device includes an AC pump bias coupled to the bridge circuit through the second resonator. A first circuit can be coupled to the bridge circuit through the first resonator. The first circuit can be associated with a first frequency. A second circuit can be coupled to the bridge circuit through the second resonator. The second circuit can be associated with a second frequency. The second frequency can be different than the first frequency.
Absstract of: EP4773048A1
The present invention relates to a method 100 and system for error mitigation in photonic quantum information processing. The method 100 involves generating 111 partially distinguishable photons, measuring 121 at least one computation result R(p) that is dependent on at least one probability distribution p produced by N partially distinguishable photons, uniquely labeling and partitioning the photons, estimating probability distributions of cells within chosen partitions, and combining 131 these distributions to construct a new approximation of the noise-impacted distribution. The error-mitigated distribution is then computed by subtracting the approximated distribution from the original one.
Absstract of: WO2025049996A1
In a general aspect, tuning the coupling strength between a qubit device and nearby control lines is described. In some implementations, a method includes identifying a design of first and second quantum processor wafers of a quantum processing system. The first quantum processor wafer includes a qubit device which includes two qubit electrodes and a SQUID loop. The second quantum processor wafer includes a control line which is configured to apply control signals to the qubit device and includes first and second control ports, a circuit loop inductively coupled to the SQUID loop, and conductive traces connected between the circuit loop and the respective first and second control ports. The control lines are capacitively coupled to the two qubit electrodes. The method includes obtaining simulation data and experimental data from measurements of the quantum processing system, and modifying the design based on the simulation data and the experimental data.
Absstract of: CN122347233A
本申请公开了一种量子近似优化计算系统和量子近似优化计算方法。系统包括问题映射模块、量子线路构建模块和执行模块，问题映射模块被配置为对待求解问题进行编码映射处理，确定量子算符，量子线路构建模块被配置为根据待求解问题的问题约束属性和量子算符，构建量子演化线路，执行模块被配置为执行量子演化线路，以求解待求解问题。这样，量子近似优化计算系统通过模块化拆分构建分层架构，可使各模块可独立升级、替换和复用，同时标准化的模块作业流程能够适配不同的组合优化问题，在一定程度上降低量子线路构建与执行的开发成本，减少硬件噪声带来的干扰，提升量子近似优化算法在NISQ设备上的执行效率与结果可靠性，适配各类业务场景的求解需求。
Absstract of: JP2026113324A
【課題】量子シミュレータの性能上問題のある箇所を特定しやすくすること。【解決手段】情報処理装置１０１は、各量子回路１１１～１１３の２以上の属性それぞれを表す属性情報１２１～１２３を取得する。情報処理装置１０１は、診断対象シミュレータ１０２および他のシミュレータ１０３それぞれで各量子回路１１１～１１３を実行した場合の実行時間に基づく他のシミュレータ１０３に対する診断対象シミュレータ１０２の性能を表す性能情報１３１～１３３を取得する。情報処理装置１０１は、属性情報１２１～１２３が表す２以上の属性それぞれを説明変数とし、性能情報１３１～１３３が表す性能を目的変数として、説明変数と目的変数との関係を統計分析することにより、目的変数に対して有意な属性を属性情報１２１～１２３が表す２以上の属性から特定する。情報処理装置１０１は、特定した有意な属性を表す情報１４０を出力する。【選択図】図１
Absstract of: WO2025007189A1
A method for qubit initialisation comprising the steps of: (i) setting a two-qubit state of a pair of spin qubits to any state; (ii) verifying a qubit state associated with the pair of spin qubits against a corresponding target state; and (iii) in response to determining, at step (ii), that the qubit state is not the target state, repeating steps (i) to (ii) until the qubit state is determined as the target state. Determining the qubit state as the target state includes performing one or more Pauli-spin blockade (PSB) checks, and at least one two-qubit state conversion operation, on the pair of spin qubits.
Nº publicación: JP2026522231A 07/07/2026
Applicant:
バーデン－ビュルッテンベルクシュティフトゥングゲーゲーエムベーハー
Absstract of: WO2024245528A1
The invention relates to a coherent single photon source (100) comprising: a nanodiamond (120) having a quantum emitter (140), wherein the nanodiamond (120) and the quantum emitter (140) are designed and configured such that the quantum emitter (140) emits coherent, indistinguishable photons (160). The invention further relates to a system (300) comprising: a first coherent single photon source (101); and a second coherent single photon source (102); wherein the first coherent single photon source (101) and the second coherent single photon source (102) are designed and configured such that photons (160) emitted from a first quantum emitter (151) of a first nanodiamond (121) of the first coherent single photon source (101) are indistinguishable from photons (160) emitted from a second quantum emitter (152) of a second nanodiamond (122) of the second coherent single photon source (102).
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