Alerta

CLASSICAL-QUANTUM HYBRID APPROACH TO MULTI-HOP ROUTING IN CARGO LOGISTICS

Absstract of: AU2025235576A1

An optimal route can be determined for delivering an item through a logistics system where vehicles have multiple stops when traveling along routes. The optimal route is determined using a hybrid system employing a classical computing device and a quantum annealer. The classical device reduces the search space that allows the quantum annealer to determine a more optimal solution. In an aspect, a routing graph comprising nodes and edges is populated from routes of vehicles, where the nodes identify locations and the edges represent routing data. At least a portion of the nodes and edges is removed to form a refined routing graph. For an origin–destination input, the refined routing graph can be filtered according to a first set of routing constraints to form a reduced route search space. A quantum annealer is invoked according to an objective and a different second set of routing constraints.

INTEGRATED PULSE OPTIMIZER AND SIMULATOR FOR HIGH-FIDELITY TWO-QUBIT GATES ON TRAPPED IONS

Absstract of: US20260268189A1

Technologies for simulating and optimizing electromagnetic pulses are disclosed herein. A quantum computing system generates, based on a specification of one or more system parameters, one or more control values, and one or more noise offsets, a controlled environment for a quantum computing system. The quantum computing system simulates, as a function of the control values, one or more pulses within the controlled environment. One or more candidate pulses are identified based on an evaluation of the simulated pulses. A sequence comprising properties of at least one of the candidate pulses is returned.

EXPONENTIAL QUANTUM ADVANTAGE FOR MEASURING FERMIONIC OPERATORS

Absstract of: AU2025214821A1

Method, systems, and apparatus for measuring fermionic operators. In one aspect, a method includes obtaining an input comprising k-body Majorana operators, a predefined precision, and copies of a tensor product of a quantum state and the quantum state. For each Majorana operator, a basis to measure the Majorana operator in is determined. The input is processed to obtain expectation values that correspond to the Majorana operators. A graph is constructed by, for each non-zero expectation value, adding a vertex to the graph that represents a Majorana operator that corresponds to the non-zero expectation value and adding edges between vertices in the graph that represent anticommuting Majorana operators. A vertex coloring algorithm is applied to the graph. For a color that corresponds to the Majorana operator, a simultaneous eigenbasis of Majorana operators in the graph with the color is determined. The Majorana operator is measured in the determined basis.

DOUBLE TRANSMON COUPLERS FOR MEDIATING INTERACTIONS BETWEEN QUANTUM BITS

Absstract of: US20260268193A1

A device comprises a superconducting integrated circuit which comprises a tunable coupler. The tunable coupler comprises a first node, a second mode, a first transmon, a second transmon, and a flux-tunable inductive coupler. The first node is coupled to a first quantum bit, and the second node is coupled to a second quantum bit. The first transmon comprises a first Josephson junction, and the second transmon comprises a second Josephson junction. The flux-tunable inductive coupler comprises a superconducting loop that couples the first transmon and the second transmon. The superconducting loop comprises a third Josephson junction. The first Josephson junction, the second Josephson junction, and the third Josephson junction are coupled in series between the first node and the second node of the tunable coupler.

DECODER FOR QUANTUM REPETITION CODE IN ONE DIMENSION

Absstract of: EP4804089A1

A method of correcting errors in a repetition code protected quantum memory, comprising an initial step of measuring parities between adjacent qubits along a one dimension presentation of the code, and locating apparent defects on a map of said one dimension presentation of the code on the basis of the measured parities, and a subsequent treatment step during which each site of the map is associated with a local automaton, the local automaton displacing apparent defects along the map on the basis of a simulated attractive interaction between apparent defects, said interaction being simulated with local memory and communicated from site to site, the automaton erasing apparent defects by pairs when pairs of apparent defects become adjacent on the map.

Ion shuttling system control

Absstract of: GB2704546A

An ion shuttling control system 300 is disclosed for use in trapped ion quantum computing. The ion shuttling control system includes a controller 302 configured to generate a first operation code, the first operation code indicating a first ion manipulation operation of a plurality of ion manipulation operations and a first set of electrodes of a plurality of sets of electrodes 362 of an ion trap; a plurality of digital-to-analog converters (DACs) 354 configured to generate a first set of analog waveforms, the first set of analog waveforms being selected based on the first operation code; and a switching network 356 configured to provide the first set of analog waveforms to the first set of electrodes, the first set of electrodes being selected based on the first operation code. Figure 3

METHOD AND QUANTUM HARDWARE FOR QUANTUM ERROR CORRECTION

Absstract of: EP4804090A1

0001 A method for quantum error detection and/or correction according to a quantum error correction code that comprises at least one stabilizer operator acting on at least two data qubits (11), the method comprising: providing a quantum hardware (100, 100', 1000, 1000a, b, c, d, e) which comprises the at least two data qubits (11), a syndrome qubit (12a, b) and a multiqubit coupler (1) for the qubits (11, 12a, b); operating the qubits (11, 12a, b) and the multiqubit coupler (1) according to a syndrome measurement circuit associated with the at least one stabilizer operator to thereby retrieve an error syndrome of a quantum state of the data qubits (11) associated with the at least one stabilizer operator.

CIRCUIT COMPILATION METHOD FOR QUANTUM ERROR MITIGATION

Absstract of: EP4804087A1

0001 According to an aspect of an embodiment, operations include obtaining initial quantum circuit comprising entangling gates to generate first randomized quantum circuits by applying RC protocol on initial quantum circuit. The operation further includes obtaining first combined measurement results by executing first plurality of randomized quantum circuits on quantum computer. The operation includes generating plurality of random noise-magnified quantum circuits by applying ZNE protocol on initial quantum circuit. The operation further includes generating second randomized quantum circuits by applying RC protocol on each random noise-magnified quantum circuit and obtaining second combined measurement results by executing second plurality of randomized quantum circuits on quantum computer. Finally, operation includes generating final measurement results for initial quantum circuit by applying extrapolation method on first combined measurement results and second combined measurement results.

Controlling execution of a quantum algorithm

Absstract of: GB2704433A

A system for controlling execution of a quantum algorithm that includes a processing unit (CPU 201) wherein the system uses memory-mapped addressing to access data memory that stores a measurement and indicates completion related to the algorithm. The quantum algorithm measurement operation may include determining the final state of a quantum system or extracting a single data point from a computation. The measurement data memory (referred to as Quantum Collapse Memory, QCM 202) may be composed of memory components (blocks) such as DATA RAM 205, VALID RAM 206, DONE section 207 and MASK RAM 208. The system may apply a partition mask to define and selectively store portions of a larger measurement dataset in the DATA section. CPU 201 may interact with the data memory 202 via interconnect 220, issuing instructions such as load/store instructions to access the quantum operation measurement result. The measurement data memory may be implemented as part of an FPGA, ASIC (Application-Specific Integrated Circuit) or other hardware or simulated in a software environment. The data memory may also be part of a Very-Large-Scale Integration (VLSI) system, or a software simulation of a computer system. Fig 2

INCOHERENT APPROXIMATIONS OF LEAKAGE FOR EFFICIENT SIMULATIONS OF NOISY QUANTUM COMPUTATIONS

Absstract of: WO2025101869A1

Methods, systems and apparatus for determining an effect of uncontrolled quantum state transitions in a noisy quantum computation performed by a quantum computing device, where the noisy quantum computation comprises execution of a quantum circuit that is represented by one or more quantum channels. In one aspect, the uncontrolled quantum state transitions are approximated as incoherent uncontrolled quantum state transitions through application of a random phase approximation to the one or more quantum channels to obtain a modified quantum circuit that is represented by one or more incoherent quantum channels. The incoherent quantum channels preserve incoherence between computational subspaces and environmental subspaces for the one or more quantum channels. A simulation of the modified quantum circuit is then performed using a qubit simulation of the modified quantum circuit.

EXECUTING QUANTUM PROGRAMS ON MODULAR QUANTUM PROCESSING UNITS

Absstract of: WO2025096761A1

In a general aspect, quantum programs are executed on modular quantum processing units in a quantum computing system. In some implementations, a method includes receiving a quantum program including a sequence of quantum logic operations; decomposing the sequence of quantum logic operations into an equivalent sequence of quantum logic gates; and segmenting the sequence of quantum logic gates into an equivalent sequence of quantum circuit widgets. Each quantum circuit widget includes a subset of the quantum logic gates in the sequence and corresponds to a time slice of the quantum program. The quantum circuit widgets are compiled to produce a set of compiled quantum circuit widgets to be executed on multiple quantum processor modules of the quantum computing system.

QUANTUM COMPUTING ARRANGEMENT, QUANTUM COMPUTING SYSTEM COMPRISING A PLURALITY OF SAID QUANTUM COMPUTING ARRANGEMENTS AND METHOD OF IMPLEMENTING A QUANTUM ERROR CORRECTION CODE ON SAID QUANTUM COMPUTING ARRANGEMENT OR SYSTEM

Absstract of: WO2025093134A1

The present invention is related to a quantum computing arrangement comprising a plurality of qubits, to a quantum computing system comprising a plurality of said quantum computing arrangements, to a method of implementing, on a quantum computing system, a quantum error correction code, said quantum computing system comprising the quantum computing arrangement, and to the use of a quantum computing system or a quantum computing arrangement for implementing a quantum error correction code.

OPTICAL BEAM POSITIONING AND CONTROL FOR QUANTUM COMPUTING

Absstract of: WO2025094047A1

Apparatus (20) for quantum computing includes an ion trap (24), which is configured to hold a first array of ions (40) in respective positions along an array axis (38). A radiation source (28) is configured to emit a second array of beams of coherent radiation, including first beams having respective first intensities (64) and having frequencies chosen to excite selected internal transitions of the ions and second beams having second intensities (66) at least ten times greater than any of the first intensities, and to switch respective locations of the first and second beams within the second array. Optics (82) focus the beams into the ion trap such that each beam in the second array is incident on a respective ion in the first array.

FREQUENCY PLAN GENERATOR FOR MULTI-QUBIT PROCESSORS

Absstract of: US20250148335A1

0000 With a computerized frequency plan generator, for each node in a quantum lattice: determine a list of possible frequencies subject to at least one of nearest neighbor and next nearest neighbor collision constraints; and assign a highest possible frequency; apply a collision cleaning routine to the quantum lattice with the assigned frequencies until at least one of a condition where there are no remaining collisions and a condition where collision count ceases to improve; and apply a frequency perturbation routine to the collision-cleaned quantum lattice to move apart at least one of a high-risk nearest neighbor collision and a high risk next nearest neighbor collision.

OPTIMIZATION TO MITIGATE FREQUENCY CROWDING IN MULTI-QUBIT PROCESSORS

Absstract of: WO2025093256A1

Define a plurality of qubit collision types and a plurality of constraints. For a group of qubits, use a computerized mixed-integer programming solver to, subject to the constraints, iteratively minimize collisions by minimizing a sum of products of weights multiplied by an amount of frequency collisions for given ones of the constraints of each one of the collision types. Output a frequency tuning plan for the group of qubits, based on the iterative minimization. Facilitate tuning physical qubits in accordance with the frequency tuning plan.

QUANTUM PROCESSING SYSTEMS

Absstract of: WO2025091073A1

Aspects of the present disclosure provide a quantum processing device comprising: a nuclear spin register comprising at least two nuclear spin qubits; at least one unpaired electron coupled to the nuclear spin register; and a control system configured to: control and/or readout the electron spin qubit; control and/or readout a nuclear spin qubit; and reduce errors arising from dipolar coupling between the nuclear spin qubits and/or between the electron spin and nuclear spins.

HIGH-FREQUENCY CASCADE READOUT

Absstract of: WO2025093253A1

A circuit for reading out the state of a qubit 100 having singlet and triplet spin states comprising: a double quantum dot 101 forming a qubit 100 comprising first and second quantum dots 105, 106. The circuit comprises a cascade quantum dot 102 capacitively coupled to the second quantum dot 106; a charge reservoir 103 tunnel coupled to the cascade quantum dot 102; and readout circuitry 104 coupled to the reservoir 103. When a charge carrier tunnels between the first and second quantum dots 105, 106, a charge carrier tunnels between the cascade quantum dot 102 and the charge reservoir 103. A frequency source connected to a gate electrode or the charge reservoir 103 is configured to apply an alternating potential 111 at a first frequency, h, thereby to cause cyclic tunnelling of a charge carrier only when the qubit is in the singlet state which can be detected by the resonator circuit 104.

DYNAMIC SIGNAL CONTROL SYSTEMS AND METHODS

Absstract of: WO2025096317A1

Various embodiments provide methods, apparatuses, systems, or computer program products for providing dynamic control of a signal. In an example embodiment, a system comprises a signal generator, a controller configured to control operation of the signal generator, a first signal path between the signal generator and an output connected to an electrode of an ion trap, and a selectively connectable second signal path between the signal generator and the output to bypass the low pass filter. The signal generator is configured to generate a signal comprising a first frequency component having a first range of frequencies and/or a second frequency component having a second range of frequencies higher than the first range of frequencies. The first signal path comprises a low pass filter to filter noise above the first range of frequencies. The second signal path comprises a bandpass filter to permit the second frequency component to pass from the signal generator to the output.

SYSTEMS AND METHODS FOR OPTIMIZING SPIN QUBIT READOUT

Absstract of: WO2025091074A1

Aspects of the present disclosure provide mechanisms to optimize qubit readout using known readout techniques. To do so, some aspects of the present disclosure control a tunneling rate between a qubit being measured and a charge sensor/reservoir. If PSB based readout is desirable for a quantum processing system, aspects of the present disclosure increase the asymmetry of the tunneling rates between two quantum dots tunnel-coupled to the SET/reservoir. If reservoir readout is desirable for a quantum processing system, aspects of the present disclosure adjust the tunneling rate between a quantum dot and the SET/reservoir for improved efficiency of the readout method.

MULTI-TERMINAL QUANTUM DEVICES AND SYSTEMS

Absstract of: WO2025093114A1

First and second device terminals of a multi-terminal quantum device (200) are coupled to first and second external measurement terminals respectively, whilst a device ground terminal is coupled to an external ground terminal. The device ground terminal is coupled to the external ground terminal via two parallel ground lines (101, 102). A first of these ground lines (101) includes a voltage measurement device (105), and a second ground line (102) comprises a voltage generator (106). A controller (103) receives as input a time-varying voltage measurement on the first line (101), and uses this measurement to generate a control signal to the voltage generator (106). The control signal causes the voltage generator (106) to generate a time-varying stabilization voltage on the second ground line (106) in order to mitigate or cancel any residual voltages on the device ground terminal.

MAGNETIC INTERFERENCE REDUCTION DEVICES AND SYSTEMS

Absstract of: US20250142796A1

0000 An interference reduction device is provided. The interference reduction device may include a magnetic shield positioned in proximity of a magnetic field. The magnetic shield is configured to reduce interference on the magnetic field along the direction of the magnetic field. The magnetic shield may include a cutout approximately parallel to the direction of the magnetic field, the cutout is configured to reduce a distortion caused by the magnetic shield on the magnetic field.

SYSTEMS AND METHODS FOR A VIRTUAL FACILITY AND A VIRTUAL FACILITY WORLD MODEL

Absstract of: US12288293B1

A virtual facility system may include a storage system, a data engine, an integration system, a virtual facility interface system, and a simulator engine. The storage system may store data including video of the real facility. The data engine may train a neural rendering model of the real facility based on the data providing a photorealistic three-dimensional representation of the real facility. The integration system may provide one or more interfaces facilitating communication with one or more control systems associated with the real facility including a management system providing historical or live inventory tracking data and facility operations process data characterizing of locations and tasks corresponding with inventory items or materials stored or handled in the real facility. The virtual facility interface system may provide access to information stored in a virtual facility. The simulator engine may simulate novel views generated based on the neural rendering model.

HARDWARE-EFFICIENT NEUTRAL ATOM QUANTUM COMPUTING METHOD AND DEVICE

Absstract of: EP4804088A2

The present disclosure relates to a device and a method for quantum computing using a plurality of neutral atoms in an array of optical traps, wherein a first internal state of the neutral atoms serves as qubit ground state |o>, and a second internal state serves as qubit excited state |1>. According to the present disclosure, a local single-qubit gate operation on a qubit may be performed comprising locally and selectively illuminating the qubit prepared in a superposition state |s> of qubit ground state |o> and qubit excited state |1> with a qubit addressing laser at a first qubit addressing laser frequency to cause a differential Stark shift for the qubit ground state |o> and the qubit excited state |1>, Further, a local two-qubit gate operation may be performed on a pair of qubits comprising locally and selectively illuminating the pair of qubits prepared in the qubit ground state |o> with the qubit addressing laser at a second qubit addressing laser frequency for coupling the pair of qubits to a Rydberg state |r> of the neutral atoms preferably via a third internal state c> of the neural atoms that can serve as an intermediate state of a two-photon transition from the qubit ground state |o> to the Rydberg state |r>.

情報処理プログラム、情報処理方法、および情報処理装置

Absstract of: US20260260710A1

A computer-readable recording medium stores therein a program for causing a computer to execute a process, the process includes calculating an energy of a molecule, based on an energy of each of a plurality of fragments obtained by dividing a structure of the molecule by a molecule dividing method, the calculating the energy including: calculating, for a first fragment among the plurality of fragments, a first problem using a first Hamiltonian corresponding to the first fragment, and calculating a first energy corresponding to the first fragment using a result of calculating the first problem; and calculating, for a second fragment among the plurality of fragments and corresponding to a second Hamiltonian identical or similar to the first Hamiltonian, a second energy corresponding to the second fragment using a result of calculating the first problem.

光量子计算系统、光量子计算方法、装置和设备

Nº publicación: CN122713457A 08/09/2026

Applicant:

中国移动通信有限公司研究院中国移动通信集团有限公司

Absstract of: CN122713457A

本发明提供了一种光量子计算系统、光量子计算方法、装置和设备，该系统包括：光子源，用于发射多个光子；制备单元，用于将多个光子制备成光子纠缠态，光子纠缠态中包括一个第一纠缠光子和多个第二纠缠光子；第一量子计算设备，用于对第一纠缠光子进行幺正操作和投影操作，生成第一纠缠光子的第一目标量子态；多个第二量子计算设备，用于对第二纠缠光子依次进行维度拓展、幺正操作、多次交换编程操作和投影操作，生成第二纠缠光子的第二目标量子态；单光子探测设备，用于对第一目标量子态和多个第二目标量子态分别进行测量计算，生成计算结果。采用本发明提供的光量子计算系统进行光量子计算时，量子级联计算成功率高，并且资源需求小，操作简便。