Alerta

CONTEXT AWARE FIDELITY ESTIMATION FOR SURFACE CODE CIRCUITS IMPLEMENTED BY QUANTUM COMPUTING SYSTEMS

Absstract of: WO2025184591A1

This disclosure includes a method for operating a quantum computing system (QCS) that includes a set of qubits. The method includes generating a set of circuit-slices. Each circuit-slice is a circuit-slice of a quantum circuit. The set of qubits is subdivided into a first subset of qubits and a second subset of qubits. The first subset of qubits is a set of qubits-to-probe. The second subset of qubits is a set of neighboring qubits. Each neighboring-qubit neighbors at least one qubit-to-probe in the quantum circuit. A tomography dataset is generated based on a set of qubit measurements. Each qubit measurement corresponds to measuring each qubit-to-probe subsequent to operating at least one circuit-slice on the set of qubits. A set of fidelities is estimated for the set of qubits based on the tomography dataset. The set of fidelities corresponds to a context of the quantum circuit.

BLOCK-SEQUENTIAL APPROXIMATE CIRCUIT EXECUTION AND AN ADAPTIVE EXECUTION BLOCK SELECTION PROCEDURE

Absstract of: WO2025174833A1

A block-sequential approximate circuit execution and a block-sequential approximate circuit execution system and method thereof includes receiving an input quantum circuit. The method further includes dividing the input quantum circuit into a set of blocks, the set of blocks including an initial block and one or more additional blocks. The method further includes executing, by a Quantum Processing Unit, the set of blocks, the initial block is executed on a first state and a block of the one or more additional blocks is executed in a second state. The method further includes training, by the Quantum Processing Unit, a parametrized quantum circuit such that the parametrized quantum circuit is operable to reproduce the second state. The method further includes outputting, by the Quantum Processing Unit, an expected output of the input quantum circuit.

COMPUTER-READABLE RECORDING MEDIUM STORING QUANTUM CALCULATION SUPPORT PROGRAM, QUANTUM CALCULATION SUPPORT METHOD, AND INFORMATION PROCESSING DEVICE

Absstract of: US20260260149A1

A recording medium storing a program for causing a computer to execute processing including: expanding an imaginary-time evolution expression into multiple expressions for multiple orders; generating sets of orders obtained by extracting an order twice from the multiple orders; performing, for each set, generating a quantum circuit indicating quantum calculation of the physical quantity obtained by partial imaginary-time evolution using expressions of orders in the set, and causing a quantum computer to repeatedly execute the quantum calculation using the quantum circuit for the set until the physical quantity obtained from the quantum calculation converges such that an output state obtained by the quantum calculation using the quantum circuit for the set is used as an input state in the subsequent quantum calculation; and calculating the thermal equilibrium expectation value at the finite temperature of the physical quantity using a value of the physical quantity after convergence for each set.

CHARACTERIZATION USING NON-CONVENTIONAL MODALITIES OF COMPUTATION

Absstract of: US20260260153A1

One or more properties of a quantum error correction protocol are specified in a formal language using a theorem prover. A quantum error correction protocol and a formal proof certificate are synthesized, the formal proof certificate being a machine-checkable proof that the quantum error correction protocol satisfies the one or more properties. The quantum error correction protocol is compiled into a quantum circuit with the formal proof certificate embedded in the quantum circuit. The quantum circuit is deployed onto quantum computing hardware.

A PARTICLE TRAPPING DEVICE

Absstract of: EP4800493A1

0001 A mechanism for controlling current flow through conductive elements for a particle trapping device. A control arrangement is configured to control the operation of a switch arrangement to control the current flow between an input electrical interface and return electrical interface, via the conductive elements, to remain substantially constant, even whilst switching which conductive elements conduct the current.

EFFICIENT RESOURCE ALLOCATION FOR ITERATIVE COMBINATORIAL OPTIMIZATION

Absstract of: EP4800550A1

0001 A resource allocation method for iteratively improving a solution to a problem by combinatorial optimization including those not natively suited for quantum computers is proposed. Classical and quantum computing resources are provided. Starting from a solution in the search space following steps are repeated: - deciding whether to use classical or quantum optimization - in the case of classical optimization, calculating at least one classical estimator with a classical optimization algorithm on provided classical computing resources, - in the case of quantum optimization, calculating at least one correlation matrix with a quantum optimization algorithm on provided quantum computing resources, and - updating the solution based on at least one estimator or at least one correlation matrix. The method terminates when a termination criterium is met. The invention provides a flexible optimization problem solving approach for technical systems that can deal with a high level of complexity and overcomes the limitations of existing quantum optimization strategies, thereby offering promising avenues for tackling larger-scale and more complex optimization problems including those not natively suited for quantum computers.

PULSE SHAPING FOR FAST, LOW-LEAKAGE PARAMETRICALLY MODULATED QUANTUM COMPUTING GATES

Absstract of: WO2025136875A1

Systems and methods are provided for shaping a control pulse for controlling a quantum computing system. In some instances, a directly controllable physical parameter can be used to indirectly control a derived quantum parameter. In one example, a method may include obtaining a target pulse shape associated with a derived quantum parameter of interest. The target pulse shape may correspond to parametric modulation. The method may include determining, based on the target pulse shape, a second pulse shape associated with the controllable physical parameter. The method may include generating, based on the second pulse shape, a control pulse.

STARK-SHIFT CORRECTED ISWAP QUANTUM GATE

Absstract of: WO2025117552A1

Methods, systems and apparatus for implementing an iSWAP quantum gate between a first qubit and a second qubit. In one aspect, a method includes setting the first qubit and the second qubit on-resonance; and maintaining the first qubit and the second qubit on-resonance for a predetermined hold time to enable a population swap, wherein during the hold time the method further comprises: applying a first microwave drive to the first qubit and a second microwave drive to the second qubit, wherein the first microwave drive and the second microwave drive each apply a respective Stark shift to the first qubit and the second qubit.

CONTROL OF QUANTUM COMPUTING CIRCUIT DEVICES

Absstract of: WO2025111345A1

Systems, methods, and apparatus for multiplexed control and readout of quantum computing systems that can include qubits, couplers, and other related quantum computing circuit devices. Numerous examples of superconducting quantum computing systems are described that include some, or all, of these quantum computing circuit devices integrated into a superconducting quantum circuit that can be interfaced by a classical control system. In one example, a superconducting circuit is described. The superconducting circuit includes: a superconducting device including a superconducting loop interrupted by one or more Josephson junctions; a first microwave resonator inductively coupled to the superconducting loop of the superconducting device; a second microwave resonator capacitively coupled to the superconducting device, where the first and second microwave resonators each have a different fundamental frequency; and a microwave transmission line evanescently coupled to each of the first and second microwave resonators.

METHODS AND SYSTEMS FOR MITIGATING EFFECTS OF ATTACKS ON GENERATIVE MODELS

Absstract of: GB2635128A

Methods and systems for training and using generative models. A method is provided for performance by a first system and a second system having access to a boson sampler which includes communicating, from the first system to the second system, a request for a set of latent vectors for use in training a generative model to generate a synthetic dataset. Based at least in part on the request, configuration settings may be selected for the boson sampler. Operating the boson sampler to produce a batch of samples, the boson sampler configured in accordance with the selected configuration settings. Determining the set of latent vectors from the batch of samples. Communicating, from the second system to the first system, the determined set of latent vectors and training the generative model to generate a synthetic dataset using the set of latent vectors.

PERFORMING A CALIBRATION PROCESS IN A QUANTUM COMPUTING SYSTEM

Absstract of: EP4800924A2

In a general aspect, calibration is performed in a quantum computing system. In some cases, domains of a quantum computing system are identified, where the domains include respective domain control subsystems and respective subsets of quantum circuit devices in a quantum processor of the quantum computing system. Sets of measurements are obtained from one of the domains and stored in memory. Device characteristics of the quantum circuit devices of the domain are obtained based on the set of measurements, and the device characteristics are stored in a memory of the control system. Quantum logic control parameters for the subset of quantum circuit devices of the domain are obtained based on the set of measurements and stored in memory.

METHOD FOR TRANSPORTING ONE OR MORE CHARGE CARRIERS THROUGH A ONE-DIMENSIONAL QUANTUM CHANNEL, AND APPARATUS AND QUANTUM-COMPUTING ARCHITECTURE

Absstract of: NL2036142B1

0001 The disclosure relates to a method of transporting of one or more charge carriers through a onedimensional quantum channel defined in a semiconductor by an array of consecutive control gates. The invention further relates to an apparatus and in particular a quantum-computing architecture configured to perform the method. The method comprises applying k time-varying control signals to the array of consecutive control gates, to generate a moving potential configured to transport the one or more charge carriers through the quantum channel, k being an integer greater than or equal to 8, wherein a respective same control signal is applied to every k’th consecutive control gate of the array of consecutive control gates, wherein the k time- 10 varying control signals are configured to mitigate potential-disorder in the one-dimensional quantum channel, to coherently transport quantum information carried by the one or more charge carriers, such as a spin, through the one-dimensional quantum channel. Fig. 4 15

GENERATION OF VERIFIABLE PRIVATE RANDOMNESS USING DISTRIBUTION OF QUANTUM ENTANGLEMENT

Absstract of: US2025131317A1

A system and method for providing quantum entanglement-as-a-service and simultaneously producing verifiably random sequences of numbers are described. When distributing quantum entanglement between customers Alice and Bob, Alice and Bob may exchange information pertaining to a measurement basis that they respectively used when performing measurements using respective halves of entangled particles. When customer Alice, for example, determines that both Alice and Bob have performed a given measurement in a same measurement basis, said result may be used in a quantum key distribution (QKD) code. When customer Alice determines that they have not performed the given measurement in the same measurement basis, Alice may concatenate said portion of the results into a private and verifiable sequence of random numbers. Providing distributed quantum entanglement therefore results in both a QKD code between said customers and in respective private and verifiably random sequences of numbers.

TELECENTRIC IMAGING OF A PLURALITY OF LIGHT BEAMS INTO A TARGET AREA

Absstract of: WO2025087823A2

The present application relates to: an imaging device for telecentric imaging of a plurality of light beams into a target area; and an associated micromirror device. The imaging device comprises a beam tilt correction element and a beam control device which is designed to image N >= 2 substantially non-overlapping light beams onto the beam tilt correction element and to control a position of one or more of the N light beams on the beam tilt correction element. The imaging device also comprises a beam imaging device which is designed to image the light beams corrected by the beam tilt correction element onto the target area, wherein the beam tilt correction element is designed to correct a tilt of each of the N light beams such that the N light beams are imaged onto substantially non-overlapping positions in the target area. The beam tilt correction element may be implemented, for example, using a micromirror device.

QUANTUM MULTIPLICATION CIRCUIT

Absstract of: WO2026054793A2

Quantum computing devices, circuits, and methods for performing a quantum multiplication of two numbers. A first quantum register is prepared in a first state indicative of a first number, and a second quantum register is prepared in a second state indicative of a second number. A third quantum register is prepared in an initial state. Each of a plurality of controlled bidirectional addition circuits performs controlled bidirectional addition of the second number into the third quantum register, controlled on a respective qubit of the first plurality of qubits. A plurality of correction operator circuits operates on the first, second and third quantum registers to remove discrepancies between performing controlled bidirectional addition and performing controlled addition. Qubits in the third quantum register are output in a prepared state indicative of a product of the first and second numbers.

SYSTEMS AND METHODS FOR OPTIMIZATION THROUGH ITERATIVE ENERGY REDUCTION IN A QUANTUM PROCESSOR

Absstract of: WO2025188389A2

Systems and methods to obtain optimized solutions using a quantum processor can include reduction of residual energy therein using an iterative protocol. The quantum processor includes qubits coupled to controllable storage devices of a superconductive control system. The iterative protocol includes: applying biases to the controllable storage devices to set reference states stored therein as a low-energy state; performing reverse annealing to cause coherent population transfer; performing forward quantum to cause an energy reduction when transitioning through a spin-glass phase and obtain updated states; and, storing the updated states in the controllable storage devices to replace the reference states. During each iteration, a magnetic phase of the quantum processor cycles around a tri-critical point, and anneals are performed in phases having favorable dynamics to efficiently reduce residual energy and limit thermal effects. Use of existing, on-chip controllable storage devices reduces readout and programming overhead of the optimization.

CHANGE DETECTION IN IMAGES USING QUANTUM COMPUTERS

Absstract of: US2025139479A1

0000 Aspects of the present disclosure relate generally to systems and methods for detecting change in images using a quantum information processing (QIP) system. The method includes implementing a quantum circuit in the QIP system, the quantum circuit comprising at least an ancilla qubit denoted as |a> and qubits denoted as image qubit conditions on a |0> state and a |1> state of the ancilla qubit |a>. The method also includes loading a reference image and a test image onto image qubits controlled on the |0> state and the |1> state of the ancilla qubit |a> in the quantum circuit. The method further includes determining a state of the image qubits after measuring |1> on the ancilla qubit for a predetermined number of times, wherein the reference image is detected to be different from the test image when the state of the ancilla qubit measures |1>.

量子計算装置において使用されるデコーダの選択

Absstract of: WO2025049017A1

A computing system (10) is provided, including one or more processing devices (12). The one or more processing devices are configured to receive quantum circuit parameters (20) including a code parameter (23) of an error correction code (22) and a number of gates () included in a quantum circuit (24). The one or more processing devices are further configured to receive respective decoder parameters (30) of each of a plurality of candidate decoders (32). The decoder parameters include a physical noise rate () of a plurality of physical qubits at which the quantum circuit is configured to be executed and a stopping time () of the candidate decoder. The one or more processing devices are further configured to compute respective spacetime costs (40) of the candidate decoders based on the quantum circuit parameters and the decoder parameters. The one or more processing devices are further configured to output a selection of a lowest-spacetime-cost decoder (42) for implementation at a quantum computing device (50).

一种物理增强图神经网络的量子本征求解参数初始化方法及系统

Absstract of: CN122674894A

本发明公开了一种物理增强图神经网络的量子本征求解参数初始化方法及系统，方法包括以下步骤：根据目标量子系统的哈密顿量的矩阵表示，构建用于描述计算基矢态之间耦合关系的加权图；根据加权图中每个节点的节点索引、目标量子系统的量子比特总数、耦合常数向量以及自旋配置统计量，构建每个节点的物理增强特征向量；利用图卷积网络对物理增强特征向量进行局部邻域特征聚合，生成融合局部耦合模式的节点嵌入向量；利用边感知注意力网络，根据加权图的边权重对节点嵌入向量进行全局交互编码，生成捕获长程耦合关系的更新节点嵌入向量；根据更新节点嵌入向量进行图级读出处理，生成预测的初始电路参数。

フォノン高速断熱通過

Absstract of: US20250020421A1

0000 A method for laser cooling an object crystal comprising at least two atomic objects and confined by a confinement apparatus is provided. A controller controls one or more manipulation sources to cause a first instance of manipulation signals to be incident on the object crystal at a target location defined at least in part by the confinement apparatus. The manipulation signals are configured to laser cool a first motional mode of the object crystal. The controller causes an adiabatic transfer of phonons from a second motional mode of the object crystal to the first motional mode of the object crystal. The controller controls the one or more manipulation sources to cause a second instance of the manipulation signals to be incident on the object crystal at the target location. The manipulation signals are configured to laser cool the first motional mode of the object crystal.

黑盒子量子态的制备方法和黑盒子量子态

Absstract of: CN122674896A

本申请公开了一种黑盒子量子态的制备方法。方法包括：根据获取到的二进制串数据，确定二进制串数据从最高位起首个值为1的目标比特位。在目标比特位为非最高位的情况下，基于目标比特位与最高位的偏移位数，自预设受控H门集合中，确定待处理的目标受控H门集合。基于辅助寄存器，对目标受控H门集合进行合成分解，生成目标量子门序列。将目标量子门序列作用于预配置的初始均匀叠加态，制备目标均匀叠加态，以根据目标均匀叠加态制备得到黑盒子量子态，初始均匀叠加态基于对比寄存器得到。这样，通过以二进制串比特特征匹配门操作，并以辅助寄存器实现多控H门简化，同时结合以逆向叠加态裁剪降低线路复杂度，从而实现黑盒子量子态的高效制备。

一种量子多体系统的基态制备方法、设备及计算机程序产品

Absstract of: CN122674893A

本申请公开了一种量子多体系统的基态制备方法、设备及计算机程序产品，该方法包括：首先从第0个时间步开始，在T个时间步的每个时间步内，利用由人工智能策略网络基于目标量子多体系统的初始量子态和初始哈密顿量确定的每个时间步所使用的测量权重向量及反馈控制参数，对目标量子多体系统进行连续弱测量与强化学习反馈演化处理，得到目标量子多体系统的第T量子态；然后随机选择哈密顿量中的一个子项，对第T量子态进行1次能量测量，并利用测量结果和哈密顿量中对应子项被选择的概率，构成奖励函数，以通过最大化该奖励函数的平均值，对应得到目标量子多体系统的第T量子态的最小总能量，从而提升对于目标量子多体系统的基态制备效率与鲁棒性。

标量守恒律方程的计算方法、计算设备、量子计算系统及存储介质

Absstract of: CN122674897A

一种标量守恒律方程的计算方法、计算设备、量子计算系统及存储介质，能够克服高维求解时存在的维数灾难，从而能够降低计算成本、提高计算效率。计算方法包括：通过水平集升维变换，将标量守恒律方程转换为线性刘维尔方程；通过有限差分法对线性刘维尔方程进行空间离散，并转化为非厄米矩阵系统；对非厄米矩阵系统进行薛定谔化处理，构建具备厄米哈密顿量的厄米哈密顿系统；基于厄米哈密顿量构造连续受控演化算子，并将连续受控演化算子转化为近似受控演化算子；基于近似受控演化算子构建量子线路；制备量子线路的初始量子态，执行量子线路，得到量子线路的输出量子态；对输出量子态测量，并基于测量结果确定标量守恒律方程的数值解。

一种基于双稳态电路模型的离散组合优化求解方法

Absstract of: CN122674266A

本发明涉及计算科学与人工智能交叉领域，具体涉及基于双稳态电路模型的离散组合优化求解方法，技术方案要点包括映射优化问题至耦合矩阵；构建模拟非线性双稳态振荡器演化的动力学系统模型；利用辛积分算法迭代更新位置x与动量y，且分叉参数a随时间步递增；根据最终变量符号确定二元解。本发明通过为了克服物理硬件在扩展性、噪声控制及环境需求上的局限，本发明基于模拟分叉算法(SB)构建“双稳态电路演化模型”。该方法不再依赖真实量子比特，而是通过经典计算机上的数值仿真，模拟物理系统的绝热分叉过程，结合了物理动力学优势与数字计算机的工程优势。

一种用于二维处理单元阵列的可扩展NTT硬件架构

Nº publicación: CN122674895A 01/09/2026

Applicant:

哈尔滨理工大学

Absstract of: CN122674895A

一种用于二维处理单元阵列的可扩展NTT硬件架构，属于NTT硬件设计技术领域。为解决对多项式长度、模数及PE阵列规模的同步可配置能力的问题。本发明控制单元包括索引生成器、计数器阵列、系数地址生成器和旋转因子地址生成器，计数器阵列分别连接索引生成器和旋转因子地址生成器，索引生成器连接系数地址生成器；控制单元分别连接系数存储器、旋转因子存储器、PE阵列，系数存储器通过多路选择器连接PE阵列；旋转因子存储器通过寄存器连接PE阵列；索引生成器根据计数器阵列产生的计数器值生成索引，系数地址生成器基于索引计算对应的存储体及系数存储地址，旋转因子地址生成器根据计数器阵列产生的计数器值生成旋转因子地址。