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DEVICE FOR OUTPUTTING MICROWAVE SIGNALS

Resumen de: US20260321953A1

0000 A device for outputting a microwave signal comprises at least one port for respective coupling to an external microwave circuit, a microwave structure operatively coupled to the one or more ports and configured to transmit the microwave signal, a magnetic source for providing a static magnetic field and a ferromagnetic body arranged in the static magnetic field and proximal to the microwave structure to be in presence of electromagnetic fields emanating therefrom. The microwave structure includes one or more transmission lines respectively associated with the one or more ports and an active cavity resonator electromagnetically coupled thereto and configured to form a regenerative microwave signal exhibited along the transmission lines. The ferromagnetic body is arranged relative to the microwave structure such that an induced electromagnetic field thereof interacts with the electromagnetic fields of the microwave structure to form a pair of hybridized polariton modes, only one of which acts to output the microwave signal.

COLD SERVICEABLE CRYOGENIC SYSTEM

Resumen de: US20260318568A1

0000 The invention relates to a closed cycle cryogenic system (100) comprising a first refrigeration system (1) with a cold head (2) and a compressor (4) coupled to cold head (2); a vacuum shroud (5) at least partly receiving cold head (2); a radiation shield (6) enclosed by vacuum shroud (5); a second refrigeration system (8) at least partly enclosed by radiation shield (6) and thermally coupled to first refrigeration system (1) for providing a low temperature environment (230), wherein cold head (2) is releasable mounted in a receiving space (7) defined within radiation shield (6) and vacuum shroud (5), and the cryogenic system (100) further has a protective device (3) cooperating with cold head (2) and receiving space (7) to allow release of cold head (2) thereby preventing receiving space (7) from ingress of media differing from refrigerant. The invention further relates to a method for maintenance cryogenic system (100).

SYSTEM AND METHOD FOR AUTOMATIC FINDING OF QUANTUM-DOT CONFIGURATIONS

Resumen de: US20260320460A1

A computer implemented method for determining boundary locations of a phase state in a charge stability diagram of capacitively coupled quantum dots includes applying a first voltage vector in the charge stability diagram generated by the coupled quantum dots for defining a first phase state of the coupled quantum dots, determining a phase transition location of the coupled quantum dots from the first phase state to a neighboring second phase state in the charge stability diagram by varying the voltage vector for changing energy levels of the states of the quantum dots until a phase transition occurs, repeating the aforementioned steps for at least a second voltage vector, and fitting the phase transition locations to a plurality of sets of fitting parameters for determining boundary locations of the phase state.

METHOD FOR NOISE-ERROR MITIGATION, COMPUTING SYSTEM AND COMPUTER PROGRAM PRODUCT

Resumen de: US20260320466A1

0000 The present invention is related to a method for mitigating errors caused by noise in a quantum circuit executed by a quantum processor and to a computing system and to a computer program for carrying out said method.

Operating a Layered Quantum Networking Environment with Fidelity Estimates

Resumen de: US20260322502A1

A first message is sent from a first node in a network indicating that a first quantum element at the first node is entangled with a second quantum element at a second node in the network. The first message comprises a first estimate of a fidelity of entanglement between the first and second quantum elements, and a timestamp indicating a time associated with the first estimate. Based at least in part on the first message, a second estimate of a fidelity of the entanglement between the first and second quantum elements is generated, at a second time after the time indicated by the timestamp, and is compared to each of multiple thresholds. At least a first (second) action is performed in response to a result of comparing the second estimate to a first (second) threshold.

STATE PREPARATION FOR QUANTUM COMPUTING

Resumen de: AU2025339478A1

Quantum computing devices, systems and methods for performing quantum state preparation of a purified target quantum state. A first quantum register is prepared in a first state that includes, for each of a plurality of collective modes, a summation over energy label states weighted based on a Gibbs probability distribution. A second quantum register is prepared in a second state that includes, for each respective collective mode, a summation over respective eigenstates. A third quantum register is prepared in a third state by applying a plurality of third unitary operators to the second and third quantum registers to transform the collective mode coordinates of the second state to physical coordinates, and adding this transformed state into the third quantum register. The state of the second quantum register is then un-computed to return the second quantum register to the null state and the first and third quantum registers are prepared in the purified target quantum state.

QUANTUM COMPUTATION METHOD

Nº publicación: US20260320463A1 15/10/2026

Solicitante:

KEIO UNIV [JP]
MIZUHO RESEARCH & TECH LTD [JP]
MIZUHO FINANCIAL GROUP INC [JP]
KEIO UNIVERSITY
MIZUHO RESEARCH & TECHNOLOGIES, LTD.
Mizuho Financial Group, Inc.

Resumen de: US20260320463A1

0000 A quantum computing system includes processors and memory storing executable instructions that, when executed by the processors, cause the quantum computing system to modulate, by an operation unit of a quantum computation unit, a quantum state, maintain, by a state holding unit of the quantum computation unit, the quantum state, observe, by a measurement unit of the quantum computation unit, the quantum state, obtain a first operator for use in performing an operation of embedding a parameter into an amplitude of the quantum state, form a second operator, using the first operator, apply multiple instances of the second operator in parallel to an entangled input state, measure the quantum state after applying the second operator to produce a measurement result to estimate a value of the phase, and estimate, at a classical computation unit, the parameter based on the value of the phase.