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255
resultados
Última actualización
12/11/2026 [06:50:00]
Resultados 100 a 125 de 255
Resumen de: US20260351874A1
Interconnections for connecting flex circuit boards in classical and/or quantum computing systems can include a first flex circuit board having a removed portion that exposes one or more signal lines and a second flex circuit board having a removed portion that exposes one or more other signal lines. The flex circuit boards can be aligned at the removed portions to form a signal trace gap near the exposed signal lines. Exposed signal lines of the first flex circuit board can be coupled with exposed signal lines of the second flex circuit board. A ground support layer can be coupled to the first flex circuit board and the second flex circuit board along the same side. An isolation plate at least partially covering the signal trace gap can be coupled to the first flex circuit board and/or the second flex circuit board on a side opposite of the ground support layer.
Resumen de: US20260350452A1
0000 A method for partitioning observables of quantum bits includes: determining whether a simultaneous measurement of expected values is possible for each set of two observables among the observables representing states of the quantum bits; generating an Ising model in which a variable indicating whether each of the observables is included in a first partition that is a subset of the observables is included, a value of a Hamiltonian increases when a set of observables that are not measured simultaneously is included in the first partition and the value of the Hamiltonian decreases as a number of observables included in the first partition increases; and generating the first partition including one or more observables based on a value of a variable corresponding to each of the observables obtained by searching for a ground state of the Ising model.
Resumen de: 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.
Resumen de: US20260352449A1
0000 A quantum communication system and associated methods are described for securely establishing a cryptographic key between multiple transmitters and a receiver. Each transmitter emits qubit signals from a light source within defined time windows, characterized by specific bases and modes controlled by a transmitter controller. The receiver utilizes an interference device with multiple inputs to receive qubit signals and outputs to generate an interference signal, which is detected by multiple detectors. A receiver controller sends information on detected outputs to transmitters and provides feedback based on polarization characteristics. Simultaneously, the system adjusts subsequent qubit signal characteristics based on this polarization feedback, enabling the establishment of a cryptographic key between transmitters using the detected signals. This adjustment optimizes the cryptographic key rate, enhancing security and efficiency in quantum communication protocols.
Resumen de: US20260349736A1
A quantum computation system for determining an optimal action in a multi-step decision problem based on a current state includes first and second computation qubits, a first and a second variational quantum circuit comprising a plurality of quantum gates acting on the first computation qubits and on the second computation qubits, respectively, wherein the plurality of quantum gates each comprises variational quantum gates and encoding gates for modifying a state of the computation qubits; wherein the encoding gates are configured to encode the first and second input feature vector in the first and second computation qubits, respectively; and wherein the quantum gates of the second variational quantum circuit do not act on the first computation qubits; a coherent interaction quantum circuit for entangling the quantum states of the first and second computation qubits; and a measurement portion for determining an output feature vector indicative of the optimal action.
Resumen de: US20260350459A1
0000 A computer implemented method, for mitigating errors in a quantum circuit comprising at least one occurrence of a quantum logic operation G. The method includes computing a set of coefficients {c
}, associated with a set of basis operations
={B
}, to obtain a quasi-probability decomposition G<0>≈Σ
c
B
on the set of basis operations
. The quasi-probability decomposition is of a target version of the quantum logic operation G, denoted G<0>. The set of basis operations {B
}forms a multi-type basis, constructed from the quantum logic operation G and elements of a set of mitigation operations
. The decomposition is computed so as to reach a decomposition target, being based on at least one of a decomposition accuracy target, and a decomposition sampling overhead target. The method includes implementing the quasi-probability decomposition on the quantum processor.
Resumen de: US20260350212A1
The invention concerns a method for enhancing the privacy of delegated quantum computations, involving: a client (A) whose aim is to solve a computational problem based on sensitive data and/or using a sensitive algorithm, and a cloud computing service provider (B) who has quantum computing capacities superior to the client (A) and is therefore capable of solving the problem and/or running the client's desired algorithm; wherein the method comprises a sequence including the following steps: a) a light emitter (10) controlled by the client (A) emits at least one pulse (11) having a specific quantum state (S1), b) a quantum emitter (20) controlled by the provider (B) receives the pulse (11), c) the quantum emitter (20) emits a single photon (21) supporting a photonic qubit (Q2), with a relationship being defined between the quantum state (S1) of the pulse (11) and the photonic qubit (Q2). The invention also concerns a system for implementing this method.
Resumen de: US20260350451A1
0000 A method, a computerized apparatus, and a computer program product for automatic quantum circuit control skips. The method comprises obtaining a controlled sequence of quantum operations defining a complete order with at least two computation-uncomputation pairs of operations separated by a sub-sequence of one or more quantum operations. Computation-uncomputation pairs to be reduced are selected based on an optimization of a score of the reduced control sequence in comparison to a score of an alternative reduced control sequence in which the pairs are not reduced, in accordance with a score of each operation in a respective quantum circuit control. A reduced control sequence with a reduced number of controls is obtained by excluding a selected computation-uncomputation pairs of operations.
Resumen de: US20260350455A1
The present invention is related to a method for mitigating errors caused by noise in an execution of a target quantum circuit T by a quantum processor, said method being a learning-based method using at least one training quantum circuit to gain knowledge about the noise in the execution of a target quantum circuit by the quantum processor. The invention is further related to a computing system configured to carry out said method, to a computer program product and to a computer-readable data carrier.
Resumen de: US20260349480A1
0000 The present invention discloses a housing structure for a 3D quantum computing processor. The housing structure comprises one or multiple housing elements, wherein the one or multiple housing elements are made from a conductive material which is substantially rigid. The one or multiple housing elements form a cavity able to receive the 3D quantum computing processor. Furthermore, a filler material is applied within the cavity formed by the one or multiple housing elements. The filler material is made from a conductive material and comprises at least indium, gallium, alloys of indium, alloys of gallium, pure indium, or combinations thereof. The filler material is solid and deformable at all operating temperatures. The filler material is able to at least partially fill the cavity, mechanically connecting the one or multiple housing elements with the 3D quantum computing processor.
Resumen de: US20260354040A1
A quantum device includes an actuator including a graphene material and having a proximal end mounted to an actuator anchor; an electrode disposed on a distal end of the actuator; a quantum dot, configured to localize a single electron, the quantum dot and the electrode disposed within a common vacuum to define a tunneling gap; and a quantum dot anchor, comprising the graphene material. The quantum device may include a modulator configured to emit electromagnetic signaling within a particular frequency range. The graphene material is tuned to increase a Casimir force between the electrode and the quantum dot anchor in response to the electromagnetic signaling. The increased Casimir force causes the actuator to deform to bring the electrode within an electron tunneling range of the quantum dot or lowers a tunneling barrier on a static electrode. Methods of making and using the quantum device are described.
Resumen de: AU2025434365A1
One example aspect of the present disclosure is directed to a method for operating a quantum computing system (QCS). The method includes accessing a set of physical error rates. Each physical error rate of the set of physical error rates corresponds to a physical error rate of a qubit of the set of qubits. The set of physical error rates is non-uniform. A predicted logical error rate for a quantum error correction (QEC) code is determined. The QEC code corresponds to the set of qubits. Determining the predicted logical error rate is based on the set of physical error rates and a logical error rate model for the QEC code. The QCS is operated in accordance with the predicted logical error rate for the QEC code.
Resumen de: US20260350444A1
A controller of a quantum system causes a geometric phase gate to be performed on two or more qubits by causing a first adiabatic coupling of at least one memory state of two or more quantum objects embodying the two or more qubits to a respective magnetic field sensitive state of the two or more quantum objects while the two or more quantum objects are disposed within a static magnetic field gradient zone of a confinement apparatus. The first adiabatic coupling is performed for a shelving time. Responsive to determining that a gate time period has elapsed since a completion of the shelving time, the controller causes a second adiabatic coupling of the at least one memory state to the respective magnetic field sensitive state while the two or more quantum objects are disposed within the static magnetic field gradient zone.
Resumen de: US20260352345A1
A unified quantum network architecture is introduced that seamlessly applies to all memory types while sharply reducing experimental overhead. The scheme depends on the following elements: A unified quantum network framework based on photon heralding. As a unified quantum network framework, a scheme for optically heralded entanglement that applies to superconductor-to-optical interfaces equally as to other memory-photon interfaces (such as spin-photon interfaces, and others). To address the challenges noted above, a scheme termed “Universal Quantum Bus” (UQB) is introduced. UQB is described for connecting diamond color centers across a telecom fiber network, however the scheme works equally for all other memory types.
Resumen de: AU2026253955A1
- 29 - Abstract Systems, methods, and quantum circuits for estimating an expectation value of an observable of a physical quantum system. A plurality of qubits is received, including inner and outer register qubits and state simulation qubits prepared in a reference eigenstate of a Hermitian operator having a reference eigenvalue. A first unitary operation is performed that receives the inner register and state simulation qubits as input and outputs phase information. The phase information is related to the reference eigenvalue and a plurality of eigenvalues of a first operator corresponding to the observable. The outer phase register qubits are measured to obtain classical measurement results that are used to determine an expectation value of the observable for the reference state. Abstract reference state. ct c t - -
Resumen de: US20260352613A1
A circuit device includes a plurality of driver circuits, each driver circuit configured to output a respective current, and a switch network including a plurality of switch network inputs. Each switch network input of the plurality of switch network inputs is coupled to an output of a respective driver circuit of the plurality of driver circuits to receive the respective current from the respective driver circuit, a switch network output, one or more control inputs, and a plurality of switches. The switch network is configured to adjust one or more switches of the plurality of switches to provide, to a quantum computing circuit at the switch network output, an output signal including a sum of a subset of the currents from the plurality of driver circuits, the subset of the currents corresponding to the one or more control signals.
Resumen de: EP4835755A2
Methods and systems are provided for performing measurement-based quantum computation using an implementation of an error correction code representable by a computational lattice (such as a Raussendorf-Harrington-Goyal lattice) comprising a plurality of vertices and a plurality of edges. The method comprises generating, for edges of the lattice, logical two-qubit entangled states. The method further comprises processing information by performing, for vertices of the lattice, encoded n-GHZ measurements on n logical qubits of a number n of logical two-qubit entangled states, wherein n is the degree of the vertex.
Resumen de: EP4835750A2
An information processing apparatus sets, for a rotation gate that is a quantum gate executed on an encoded logical qubit, a target rotation angle set in the rotation gate to a designated rotation angle, generates a first logical qubit having a predetermined ancilla state based on the designated rotation angle, executes a stochastic rotation operation that results in a forward rotation with the designated rotation angle or in an inverse rotation whose sign is opposite to a sign of the designated rotation angle by using, as input, the first logical qubit and a second logical qubit on which the rotation gate is executed, and repeats a process for generating the first logical qubit and a process for executing the rotation operation while updating the designated rotation angle based on the target rotation angle until the rotation operation results in the forward rotation.
Resumen de: WO2025212141A2
Multi-way fusion circuits can perform fusion operations on three or more input qubits, each of which may initially be part of a separately-entangled system of qubits. When the fusion operation succeeds, the three or more input qubits are consumed in a projective entangling measurement that also results in creating a single entangled system that includes the remaining qubits of the initial separately-entangled systems.
Resumen de: CN122603481A
A quantum-enabled Internet (QEI) includes a quantum-enabled networking architecture that integrates advanced communication systems with long-distance quantum communication hardware and methods of operation thereof. Using a quantum network (QN) design paradigm, a quantum network paradigm with a physical center-based stack is provided to control dynamics of multiple optical substance Hamiltonian across remote nodes. This QN network facilitates a substantially long-distance quantum network service-high visibility Floohm-Mander interference of telecommunications quantum states generated in two separate, telecommunications compatible quantum light-material interfaces, which are spaced apart by a distance. The QN paradigm design can be applied to demonstrate scalable long-distance QN services in a QN infrastructure, including transmission of polarization entanglement generated by a highly repeated source of entangled photons and storage of telecommunications polarization entanglement using a remotely located quantum memory, the quantum memory can predict storage of entanglement using non-destructive measurement and quantum state tomography.
Resumen de: WO2025071453A1
The present disclosure relates to an amplifier system (200) comprising at least four travelling wave parametric amplifiers (210a-d), TWPA, parallel connected between a first and second interferometer system (220, 240). The amplifier system (200) further comprises a set of pump couplings (230a-l). Each pump coupling being configured to couple a pump tone to at least one of at least one input port (202a-b) of the first interferometer system (220) and/or a respective input port (212a-d) of the TWPAs (210a-d) and/or a respective output port (214a-d) of the TWPAs (21 Oa-d) and/or at least one output port (208a-b) of the second interferometer system (240).
Resumen de: US20250112897A1
Techniques for applying a quantum ready intelligent security gateway are disclosed. In some embodiments, a system/process/computer program product for applying a quantum ready intelligent security gateway (e.g., a quantum ready intelligent security gateway that supports quantum key distribution (QKD) and/or post-quantum cryptography (PQC) for providing a secure tunnel to the mobile network) includes monitoring network traffic on a mobile network at a security gateway to identify a new session; determining meta information associated with the new session by extracting the meta information from the network traffic via one or more interfaces; and enforcing a security policy on the new session at the security gateway based on the meta information to apply context-based security in the mobile network.
Resumen de: WO2025078843A1
A method and quantum computing system are provided for investigating quantum electrodynamic effects in a physical system containing bosonic components and spin components. The method includes defining a Hamiltonian representation of the physical system, wherein the Hamiltonian representation comprises states and operators for the bosonic components and spin components. The physical system comprises a plurality of interconnected cavities in which the bosonic and spin components of the physical system are located. The bosonic and spin components of the physical system interact with one another according to quantum electrodynamics. The bosonic components of the physical system are able to hop between the interconnected cavities. The states and operators from the Hamiltonian representation of the physical system are mapped onto a quantum circuit for execution on the quantum computing system. The quantum circuit is executed on qubits of the quantum computing system to track the behaviour with time of the physical system.
Resumen de: EP4579757A1
A quantum information processing device is disclosed. The quantum information processing device comprises a semiconductor device and a single-electron electrometer electrically connected to the semiconductor device. The semiconductor device comprises a plurality of point defects having a plurality of quantum states associated with at least one electron. First transitions are effectible between first ones of the plurality of quantum states by means of electromagnetic signals interacting with the at least one electron. Second transitions occur between second ones of the plurality of states. At least some of the plurality of point defects are arranged in the semiconductor device at distances below 20 nm. The single-electron electrometer is configured to be operated at frequencies of 1 MHz or more.
Nº publicación: EP4833644A1 04/11/2026
Solicitante:
PASQAL [FR]
Pasqal
Resumen de: EP4579542A1
A computer implemented method for determining a plurality of spatial positions for a plurality of qubits. The plurality of qubits associated with a graph with a plurality of vertices and edges. No underlying lattice is used for defining vertex positions. The method determines a first spatial position based on a first distance between a first pair of the qubits. The first distance is based on an average value of a parameter associated with the plurality edges. The method determines a second spatial position based on a second distance between a second pair of the qubits. The second distance based on the average value. The first pair of the qubits comprising at least one different qubit to the second pair of the qubits. The second spatial position being a different spatial position to the first spatial position.
BOPI
Sede Electrónica
