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241
results.
Updated on
16/09/2026 [08:52:00]
Results 200 to 225 of 241
Absstract of: DE102025107736A1
Die Erfindung betrifft eine Vorrichtung (1) zur charakteristischen Analyse von Lichtfeldern, aufweisendeine erste Lichtquelle (2) zum Erzeugen eines optischen Referenzsignals (A),eine zweite Lichtquelle (4) zum Erzeugen eines optischen Testsignal (B),eine Verzögerungsstrecke (3) zum Erzeugen eines relativen Phasenverschubs zwischen dem optischen Referenzsignal (A) und dem optischen Testsignal (B),einen der ersten Lichtquelle (2) und der zweiten Lichtquelle (4) nachgeschalteten ersten polarisierenden Strahlteiler (5),eine dem ersten polarisierenden Strahlteiler (5) nachgeschaltete Halbwellenplatte (6) zum Drehen der Polarisation des optischen Referenzsignals (A) und des optischen Testsignals (B),einen der Halbwellenplatte (6) nachgeschalteten zweiten polarisierenden Strahlteiler (7) zum Aufteilen des kombinierten optischen Signals (A, B),ein Detektor (8) zum Erfassen der an dem Detektor (8) interferierenden optischen Teilsignale (T1, T2),einen dem Detektor (8) nachgeschalteten Filter (9) zum Herausfiltern des Referenzsignals (A) aus dem interferierten Signal (A, B),eine dem Filter (9) nachgeschaltete Auswerteeinheit (10) zum Auswerten des Messignals (C),eine Photodiode (11), die derart angeordnet ist, dass ein Teil des optischen Referenzsignals (A) auf die Photodiode (11) zum Aktivieren der Auswerteeinheit (10) geleitet wird.Auf diese Weise wird eine Vorrichtung für eine Quantentomographie in Echtzeit und mit verringerter Komplexität bereitgestellt.
Absstract of: WO2026180803A1
A method of performing a quantum operation performed on a quantum device comprising at least one pair of quantum qubit crystals, the method comprising: setting a detuning value of each qubit crystal to a first value, wherein the detuning value is a difference between a frequency of a gate field of the at least one pair of qubit crystals and a frequency of a motional mode of the at least one pair of qubit crystals; ramping down the detuning value according to a ramping function such that the detuning value is decreased from the first value to a second value; ramping up the detuning value according to the ramping function such that the detuning value is increased from the second value to a third value; wherein the detuning value is changed by changing the frequency of the gate field and/or the frequency of the motional mode.
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.
Absstract of: WO2026180455A1
The invention relates to a quantum system (1) comprising a set (N) of identical quantum subsystems of which a majority, referred to as guide quantum subsystems (G), are in a first stable quantum state (|5S1/2, F=2, mF=1) and at least one quantum subsystem, referred to as emitter quantum subsystem (E), is in a second stable quantum state (|5S1/2, F=2, mF=2), characterized in that it comprises an excitation system (11, 12) capable of causing only the one or more emitter quantum subsystems to transition from the second stable state to a state referred to as emission state (|5P3/2, F=3, mF=3) in which these one or more emitter quantum subsystems emit a photon in order to return to the second stable state, the one or more photons emitted by the one or more emitter quantum subsystems in the emission state being capable of coupling the guide quantum subsystems in the first stable state with a state referred to as guide state (|5P3/2, F=3, mF=2) such that these coupled guide quantum subsystems form a medium having a refractive index (neff), at the frequency of the one or more photons emitted by the one or more emitter quantum subsystems in the emission state, greater than the refractive index of the surrounding medium.
Absstract of: US20260260144A1
Examples of the present disclosure are directed to a method for operating a quantum computing system (QCS) to load classical data. The method includes configuring a quantum circuit to implement a target classical function that is defined over a string of input bits. The target classical function is decomposed into a set of parity sub-functions. A set of quantum registers of the QCS is initialized with a superposition of input states corresponding to the string of input bits. A sequence of Quantum Read-Only Memory (QROM) operations is executed on the set of quantum registers to generate a set of outputs. Each QROM operation of the sequence of QROM operations encodes a separate parity sub-function of the set of parity sub-functions. Each output of the set of outputs is routed to a separate output register of a set of output registers of the QCS.
Absstract of: US20260260152A1
A computer-readable recording medium stores therein a program for causing a computer to execute a process, the process including: calculating energy of a molecule based on energy of each of multiple fragments obtained by dividing a structure of the molecule by a molecule dividing method, the calculating including: estimating, for each of the multiple fragments, a candidate value from which noise has been removed, based on multiple candidate values that are calculated by a variational quantum eigenvalue solver, each of the multiple candidate values being calculated for each of a multiple parameters of a first variational quantum circuit representing a Hamiltonian of the each of the multiple fragments, the each of the multiple candidate values being a potential solution of the parameter; and calculating, for each of the multiple fragments, an energy thereof based on the candidate value from which noise has been removed and estimated for each of the multiple parameters.
Absstract of: US20260260142A1
A method may include generating directed graphs, each of the directed graphs representing a quantum circuit. The method may also include evaluating each of the directed graphs according to operation of the quantum circuit represented by each of the directed graphs. The method may include selecting one of the directed graphs based on the evaluations. The method may further include transforming the selected directed graph to generate a second directed graph.
Absstract of: US20260260776A1
0000 The invention relates to neutral atom quantum computers having a zoned architecture that includes a storage zone and an interaction zone as part of an array of atoms that form the quantum register in an optical lattice. A schedule optimizer determines an optimized atom schedule for moving atoms between the storage zone and the interaction zone using optical tweezers generated by an optical trap generator responsive to the optimized atom schedule. The schedule optimizer may be implemented according to several variations of algorithms that include an annealing solver and a mathematical optimization engine. The schedule optimizer receives an objective function that includes selectable factors that correlate to minimizing the logical error rate for a set of operational tasks, various hardware constraints such as zone geometries and circuit schedules.
Absstract of: WO2026180934A1
In a method for implementing a Clifford gate on a quantum hardware system, a symplectic matrix representation of the Clifford gate is determined that factorizes as a product comprising at least five matrices alternating between matrices corresponding to X-diagonal Clifford operators and matrices corresponding to Z-diagonal Clifford operators. The Clifford gate is synthesized into a sequence of quantum gates, based on the symplectic matrix representation of the Clifford gate. The method comprises causing the quantum hardware system to implement the sequence of quantum gates.
Absstract of: US20260260145A1
0000 Techniques are described for controlling qubits using baseband pulse sequences. Many, or even all, qubits in a system can be controlled by baseband pulse sequences that are synchronized to a clock signal shared by the qubits. The baseband pulse control techniques allow many qubits to be driven with the same parameterized baseband pulse sequence applied based on a common clock signal, with parameters of the baseband pulse sequence selected based on the desired operation. This approach greatly simplifies the electronics needed to drive a collection of qubits, as there is no need for picosecond timing, nor the complexities that arise from varied gate durations.
Absstract of: US20260260711A1
0000 A non-transitory computer-readable recording medium stores therein a program that causes a computer to execute a process including dividing a molecule into a plurality of fragments, calculating, for each of the fragments, a first eigenvalue for each of bath orbitals included in the fragments, calculating a second value for each of the bath orbitals based on the first eigenvalue, sorting the second values in a descending order and deriving a cumulative distribution function of the second values, determining the number of the bath orbitals for which a cumulative probability of the cumulative distribution function is greater than a predetermined threshold value, selecting the bath orbitals corresponding to the second values from a largest one among the second values sorted in the descending order, in the number equal to the determined number of the bath orbitals, and calculating an energy of the molecule using the selected bath orbitals.
Absstract of: US20250077612A1
0000 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: 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.
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.
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.
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.
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.
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.
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.
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.
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.
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>.
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
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.
Nº publicación: EP4799112A1 02/09/2026
Applicant:
GOOGLE LLC [US]
Google LLC
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.
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