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OPTICAL TRANSMITTER AND QUANTUM COMMUNICATION SYSTEM

Resumen de: EP4815342A1

0001 A quantum transmitter for use in a quantum communication system is provided, the transmitter comprising: a plurality of quantum state encoders, each encoder configured to emit portions of light, each portion encoded with a respective quantum state; and a beam combining module configured to receive portions of light emitted from each quantum state encoder, and combine the received portions to produce output light comprising a sequence of successive portions of light emitted by each encoder. A corresponding quantum communication system is also provided.

量子鍵配送における初期遅延低減

Resumen de: EP4510498A1

0001 The present invention relates to a QKD communication method between an emitter and a receiver comprising the steps of distilling a secret key through a Privacy Amplification characterized in that the PA size is variable so as to ramp up from a first lower value to an end greater value.

Anomaly Detection Using Hybrid Neural Network Framework

Resumen de: US20260291963A1

0000 A hybrid quantum-classical framework detects anomalies in network data by integrating quantum and classical neural networks. Data acquisition collects user inputs and network traffic, forming a raw dataset preprocessed with SHA3 hashing and SPHINCS+ quantum-safe signatures for integrity. Quantum encoding with BB84 QKD and CNOT gate entanglement secures quantum transfers, while a quantum neural network validates data, normalizes it, and applies amplitude encoding to extract features using variational quantum circuits with RY/RZ gates, optimized via gradient descent. A variational quantum recurrent network with quantum memory classifies anomalies, thresholding scores at 0.9 to generate severity-ranked alerts. A classical convolutional neural network analyzes spatial patterns, with a multi-translation layer fusing quantum and classical outputs. An integration module combines results, adjusts circuit depth, monitors latency, and logs anomalies to persistent storage, ensuring real-time, comprehensive anomaly detection across diverse network environments.

KEY DISTRIBUTION METHOD, DEVICE, STORAGE MEDIUM, AND PROGRAM PRODUCT

Resumen de: WO2026194891A1

Provided is a key distribution method, which is applied to a sending node. The method comprises: acquiring a first raw key of a sending node and a first raw key of a relay node; determining a first intermediate key of the sending node on the basis of the first raw key of the sending node and the first raw key of the relay node; acquiring a first intermediate key of a receiving node; and determining a first target key on the basis of the first intermediate key of the sending node and the first intermediate key of the receiving node, the first target key being used for the sending node to communicate with the receiving node by means of the relay node.

QUANTUM-SAFE DOCUMENT, DRIVE AND PROCESS MANAGEMENT FOR CONTRACT OF THINGS AND DOCUMENT OF THINGS

Resumen de: US20260289000A1

0000 Disclosed herein are system, method, and computer program product for managing documents using blockchain technology and quantum-safe computational architecture. A smart drive system may facilitate the creation of a project data structure encrypted using a quantum-resistant cryptographic scheme and distributed or decentralized key management functionalities. The project data structure may indicate a sequence or flow of documents and/or document types. The smart drive system may also manage groups of documents and generate documents and group tokens to manage access permissions. The smart drive system may protect these data sources from unauthorized access based on the quantum tokens corresponding to the document, document type, and/or group of documents. The smart drive system may facilitate modifications to the document from other parties, which may represent counteroffers or a negotiation process. The smart drive system may also interconnect documents of a project data structure to create documents with pre-filled data and corresponding cryptographic bindings.

Dynamic Quantum-Enhanced Network Security System with Generative AI and Simulation

Resumen de: US20260291984A1

A network security system and method integrate generative artificial intelligence, dynamic firewall management, quantum processing, simulation, and quantum key distribution to protect digital infrastructure. The generative AI scans internet data to identify malicious URLs, generating dynamic deny and allow lists for a firewall that updates rules in real time, monitors traffic, and mitigates DDoS attacks. A quantum firewall inspects packets using a quantum processor, producing prioritized quantum rules, while a doppelganger system simulates packet effects on a mirrored network with a quantum simulator, preemptively determining outcomes. Quantum key distribution employs photon polarization to generate keys, validating traffic and detecting eavesdropping, with the firewall rerouting traffic and adjusting update frequency based on threat levels. Historical traffic analysis predicts threats, and internal communications are encrypted, ensuring comprehensive, adaptive security through interconnected components managed by a central network manager.

APPARATUSES AND METHODS FOR DETECTING QUANTUM ENTANGLEMENT AND MANAGING GENERATION OF QUANTUM ENTANGLEMENT

Resumen de: WO2025125990A1

Methods and apparatus for generating quantum entanglement detect success of entanglement attempts by monitoring output signals from one or more detectors for heralding patterns indicating that a pair of quantum systems is in an entangled quantum state. In response to detecting a heralding pattern that indicates a successful entanglement attempt a low latency signal is output on one or more signal lines; and a higher latency message is transmitted by a messaging interface. The higher latency message contains information that identifies the pair of quantum systems entangled by the successful entanglement attempt. The pair of quantum systems may be inhibited from participating in further entanglement attempts while further entanglement attempts are performed on other pairs of quantum systems.

A NON-TERRESTRIAL COMMUNICATION SYSTEM AND METHOD FOR SECURELY SYNCHRONIZING QUANTUM-SECURE CRYPTOGRAPHIC KEYS

Resumen de: EP4811717A1

0001 A non-terrestrial communication system and method for securely synchronizing quantum-secure cryptographic keys are provided. The system comprises a satellite comprising a SAT key operations module with a SAT key manager to manage and provide quantum-secure cryptographic keys; a first connection adapter co-located with an HSS; a CPE comprising a CPE key operations module with a CPE key manager to manage and provide quantum-secure cryptographic keys, a second connection adapter, and one radio terminal. The first adapter sends a key information request to the SAT key operations module, receives quantum-secure cryptographic key information from the SAT key operations module, loads a quantum-secure cryptographic key into the HSS, and sends a key identifier to the second connection adapter. The second adapter sends a key information request to the CPE key operations module, receives quantum-secure cryptographic key information from the CPE key operations module, and loads a quantum-secure cryptographic key into the radio terminal.

HYBRID POST-QUANTUM CRYPTOGRAPHY-BASED FORWARD SECRECY SUPPORTING COMMUNICATION DEVICE AND METHOD

Resumen de: KR20260139461A

0001a 본 발명은 하이브리드 양자내성암호 기반 순방향 비밀성 지원 통신 장치에 관한 것으로, 상기 장치는 사용자 식별자에 대하여 양자내성암호 기반 암호화를 수행하여 구독자의 식별정보(SUCI, Subscription Concealed Identifier)를 생성하고 상기 구독자의 식별정보(SUCI)를 사용자 단말에 전송하는 구독 암호화 식별부; 난수(RAND)를 생성하여 상기 사용자 단말에 제공하고 상기 난수(RAND)를 밀레나지 함수(Milenage Function)에 입력하여 인증토큰(AUTN)을 생성하는 도전 응답 인증부; 및 상기 인증토큰(AUTN)을 기초로 세션 데이터를 암호화하여 상기 사용자 단말과 통신하는 순방향 비밀성 지원부를 포함한다.

METHODS AND SYSTEMS FOR ENHANCING DETECTION OF FRAUDULENT AUTHENTICATION DATA

Resumen de: US12413402B1

0000 A method for enhancing detection of fraudulent authentication data includes receiving, by an electronic device, data during an authentication transaction, computing a feature vector from the received data, and normalizing the feature vector. The method also includes encoding the normalized feature vector into qubits, expanding, using at least one quantum algorithm, the normalized feature vector into a high-dimensional space, and detecting in the high-dimensional space anomalies indicative of fraud based on the qubits. Furthermore, the method includes calculating, based on the detected anomalies, a confidence score reflecting a likelihood that the received data is genuine and comparing the confidence score against a threshold value. In response to determining the confidence score fails to satisfy the threshold value, the method determines that the received data requires secondary authentication.

使用量子技术的安全经典光学通信

Resumen de: WO2022015395A2

Systems for, and methods of, detecting an attack on an optical communication channel are presented. The techniques can include sending, from a sender to a receiver, and over the optical communication channel, an optical signal, where the optical signal includes a classical optical signal representing first information and a quantum optical signal representing second information. The techniques can include detecting, by the receiver, third information from at least a portion of the quantum optical signal and sending, by the receiver to the sender, the third information. The techniques can include determining, by the sender, an indication of an attack on the optical communication channel based on at least a portion of the second information and the third information. The techniques can include triggering an alarm based on the determining.

Secure Solid-State Quantum Storage Devices

Resumen de: US20260280860A1

This disclosure describes a system and method for producing and reading a secure solid-state quantum storage device. The system comprises an illumination source and a detection system. The illumination source provides an excitation light to a quantum memory array. The detection system detects an emitted light from the quantum memory array. The emitted light corresponds to a plurality of quantum bits stored in the quantum memory array.

KEY ESTABLISHMENT AND SECURE COMMUNICATIONS BASED ON SATELLITE-CONNECTED ENTROPY SOURCES

Resumen de: US20260280869A1

Systems and techniques for secure communications and distribution of random values, provided via satellite communications, are described. These random values are generated from one or more ground-based entropy sources (e.g., quantum random number generators (QRNGs) at terrestrial locations), and optionally combined with values from satellite-based entropy sources (e.g., QRNGs at non-terrestrial locations). An example method includes: receiving a first random value generated by a first QRNG at a terrestrial location; receiving a second random value and a third random value via at least one satellite communication, each additional random value generated by other QRNGs; and generating a cryptographic key based on the first random value, the second random value, and the third random value. The cryptographic key may be produced by a key derivation function that combines the random values, and the cryptographic key may be used to establish a secure communication session.

QUANTUM MEMORY DEVICE

Resumen de: WO2026189701A1

This invention provides a quantum memory device, and a method of operating the quantum memory device, the quantum memory device comprising: a structure defining a plurality of vapour containment channels extending through the structure, each vapour containment channel containing vapour; and a controller configured to selectively: couple a first optical signal to a first vapour containment channel of the plurality of vapour containment channels, wherein the first optical signal contains 10 information, and control storage of the information of the first optical signal in the first vapour containment channel.

COMMUNICATION METHOD AND APPARATUS, COMMUNICATION DEVICE AND STORAGE MEDIUM

Resumen de: WO2026188790A1

The present application relates to a communication method and apparatus, a communication device and a storage medium. The method comprises: receiving a first message sent by a user equipment, wherein the first message is generated by the user equipment on the basis of a first encrypted message, a request message and a first quantum key, and the first encrypted message is obtained by encrypting the request message on the basis of the first quantum key; on the basis of the first message, determining the operational availability of an S&F operation; and when the operational availability indicates that the operation is available, sending a second message to a core network on the basis of the first encrypted message in the first message.

CLASSICAL CRYPTOGRAPHY AND POST-QUANTUM CRYPTOGRAPHY AUTHENTICATION FOR VEHICLE-TO-EVERYTHING (V2X) COMMUNICATION

Resumen de: WO2026192963A1

Disclosed are systems, apparatuses, processes, and computer-readable media for classical cryptography and post-quantum cryptography (PQC) protection for V2X communication. For example, an apparatus includes a processor and a memory coupled to the processor. The processor is configured to: generate a first message of a first type; generate a first authentication code for the first message with a first type of authentication key based on the first message being of the first type; generate a second message of a second type; and generate a second authentication code for the second message with a second type of authentication key based on the second message being of the second type, wherein the second type of authentication key is based on PQC.

VAPOUR CONTAINMENT ARRAY

Resumen de: WO2026189702A1

This invention provides a vapour containment array, a system comprising the vapour containment array, and a method of manufacturing the vapour containment array, the vapour containment array comprising: a housing defining an interior section containing vapour; and a structure, positioned within the interior section of the housing, the structure defining a plurality of vapour containment channels extending through the structure, wherein: a first end of the first vapour containment channel is open to the interior section of the housing for fluidic communication between the interior section of the housing and the first vapour containment channel; and the housing comprises: a first optical signal interface configured to couple a first optical signal with a first vapour containment channel of the plurality of vapour containment channels, and a second optical signal interface configured to couple a second optical signal with the first vapour containment channel, wherein an interaction between the first optical signal and the vapour contained in the first vapour containment channel induces Electromagnetically Induced Transparency, EIT, to the second optical signal in the first vapour containment channel.

A SYSTEM FOR POST-QUANTUM CRYPTOGRAPHIC PARTITIONING AND A METHOD THEREOF

Resumen de: WO2026190722A1

The present disclosure provides a system (102) for postquantum cryptographic partitioning and a method thereof. The system (102) generates a base wheel including a first element representing an integer and a list of prime numbers. The system (102) generates a culled list by multiplying each element of the base wheel by a selected prime number from the list of prime numbers. The system (102) generates a temporary list by using each element of the base wheel and appending one or more multiples of a primorial to each element of the base wheel, where the primorial is a product of all primes up to a selected prime number. Further, the system (102) generates a wheel by removing elements that are present in the culled list from the temporary list.

DISTRIBUTED QUANTUM EVALUATION NETWORK

Resumen de: US20260280862A1

A distributed quantum evaluation network for decryption. In some embodiments, the steps comprising: receiving an encrypted string; and initiating a chaincode transaction on a plurality of nodes of a disturbed ledger network (DLN), wherein the chaincode transaction further comprises the encrypted string and computer-readable instructions for quantum decryption at each of the plurality of nodes, the instructions comprising: emitting an event for external computation by calling a quantum computing software development kit (SDK) application programming interface (API), providing the encrypted string to the quantum computing SDK API; receiving a decrypted output generated by the quantum circuit upon completion of the quantum decryption operations, validating the decrypted output among the plurality of nodes using a distributed consensus protocol, storing a validated decrypted output as a new transaction on the DLN, and updating a distributed ledger state across the plurality of nodes to reflect the storing of the validated decrypted output.

RECOGNITION-STATE QUANTUM INFORMATIONAL ENCRYPTION (RSQIE) FOR QUANTUM-RESISTANT SECURE DIGITAL COMMUNICATION AND DATA PROTECTION

Resumen de: US20260280876A1

0000 A recognition-state quantum informational encryption (RSQIE) system and method provide quantum-resistant secure digital communication and data protection. Digital information is encoded into recognition-coherence scalars using a recognition mapping in which a recognition scalar R is computed as R=x/(x+X_opt), where x is a positive parameter associated with a symbol and X_opt is a predetermined constant. One or more quantum states are prepared based on the recognition scalars and encrypted using an encryption transformation derived from a recognition-coupled interaction that depends on message-associated and key-associated recognition operators. A corresponding inverse transformation decrypts the encrypted representation to recover the digital information. In some embodiments, verification includes computing a coherence deviation deltaR=abs(R_expected−R_measured) and triggering a responsive action when deltaR, or a windowed statistic derived from deltaR, exceeds a threshold, thereby providing breach indication in disturbance-sensitive implementations.

Quantum-Resistant Wireless Communications

Resumen de: US20260280864A1

0000 In one implementation, a key management service executed by a device determines cryptographic capabilities of a wireless client and an access point in a wireless network. The key management service selects a post-quantum cryptographic key generation approach for use by the wireless client and the access point based on their cryptographic capabilities. The key management service generates a key exchange policy for the wireless client and the access point that specifies one or more out-of-band paths that differ from a Wi-Fi link between the wireless client and the access point. The key management service causes the wireless client and the access point to perform a key exchange to associate the wireless client with the access point in the wireless network in part by generating keys using the post-quantum cryptographic key generation approach and exchanged via the one or more out-of-band paths specified by the key exchange policy.

METHOD FOR PROVIDING A FIBER INTERFEROMETER

Resumen de: US20260276366A1

A method for providing a fiber interferometer, starting from components, wherein at least one component has a light-guiding fiber with a free end. The method includes manufacturing the fiber interferometer with a preparing of the components based on mechanical cutting of the fiber with the free end, a connecting of the components through fiber connections based on the cut fiber, and with an applying of a static mechanical tension to at least one fiber connection, so as to approximate a length of the at least one fiber connection to a prescribed value and thus provide the fiber interferometer.

Quantum-Enhanced Gen-AI Approach for Optimizing Model Accuracy and Privacy in Secure Collaborative Analytics

Resumen de: US20260280861A1

A system and method for secure collaborative analytics enable multiple parties to perform joint data analysis without exposing sensitive information. The invention integrates quantum computing, advanced cryptographic protocols, and generative artificial intelligence (GenAI) to ensure privacy, accuracy, and efficiency. Private datasets undergo quantum optimization to retain significant features, followed by encryption using quantum-resistant protocols. Encrypted data is securely transmitted and analyzed collaboratively using quantum homomorphic encryption, allowing computations directly on encrypted datasets. GenAI optimizes feature selection, computation workflows, and privacy-accuracy trade-offs, enabling iterative refinement of analytical outputs. Results are decrypted securely using quantum key authentication and validated against predefined benchmarks. The system employs differential privacy to protect individual records while preserving data utility and supports a blockchain-like ledger for immutable audit trails. Scalable, adaptable, and compatible with diverse data types, this invention addresses the evolving demands of secure, efficient, and collaborative analytics across various domains.

Hochintegrierter Empfänger für Quantenschlüsselaustausch

Resumen de: DE102025109510A1

Die vorliegende Erfindung betrifft eine Vorrichtung zur Analyse eines quantenmechanischen Zustands einzelner Photonen, die in einem Eingangsstrahl in die Vorrichtung gelangen, wobei die Vorrichtung ein optisches Strahlaufteilungselement, das eingerichtet ist, den Eingangsstrahl in mehrere Analysestrahlen aufzuteilen, eine Mehrzahl von Zustandsprojektoren, die eingerichtet sind, den quantenmechanischen Zustand der einzelnen Photonen auf einen jeweiligen Analysezustand zu projizieren, wobei jedem Analysestrahl ein Zustandsprojektor zugeordnet ist, und eine Mehrzahl von Einzelphotonendetektoren zur Detektion der einzelnen Photonen, wobei jedem Analysestrahl ein Einzelphotonendetektor zugeordnet ist, aufweist, wobei benachbarte Einzelphotonendetektoren einen Abstand von höchstens 5 mm, bevorzugt von höchstens 1 mm, weiter bevorzugt zwischen etwa 50 µm und etwa 150 µm, noch weiter bevorzugt von etwa 100 µm aufweisen.

QUANTUM-SECURE DIGITAL CURRENCY

Nº publicación: US20260280863A1 17/09/2026

Solicitante:

ARQIT LTD [GB]
Arqit Limited

Resumen de: US20260280863A1

A computer-implemented method of quantum-secure (QS) minting and issuing of a digital coin by a central bank using a quantum cloud platform operable to facilitate an issuing authority, the method comprising: issuing a command, from the central bank to the issuing authority, to mint a new digital coin, wherein the command comprises: data indicative of a predetermined value of the digital coin, a unique identifier to be associated with the digital coin, and an identifier indicating which endpoint user of the quantum cloud platform, amongst a plurality of endpoint users, is to be designated as the owner of the digital coin; in response to receiving the command, signing, by the issuing authority, the digital coin with an ownership encryption key, wherein the ownership encryption key is a private key known only to the quantum cloud platform and the owner; subsequent to signing the digital coin with the ownership encryption key, signing, by the issuing authority, the digital coin with an authorising encryption key, wherein the authorising encryption key is a private key known only to the quantum cloud platform and the central bank.