Method for Optical Transmission of Payload Data

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This invention describes a method for transmitting user data optically via laser from a room-temperature sender to a receiver that is a quantum computer operating near absolute zero, using superconducting circuits. Before actual data transmission begins, the sender's laser diode emits a reference frequency signal — either as a free-space beam or through a fiber-optic cable — to the receiver. This reference signal sets the spin frequency of electrons that define the quantum dots (qubits) of the quantum computer for a specific time window. Once the qubits are prepared, the sender transmits the actual payload data via laser during that same time window.

Use CasesContent extracted from patent full text and abstract with AI.

• Sending classical data from a room-temperature control system into a cryogenic quantum computer without requiring additional microwave or electrical interfaces.
• Synchronizing qubit states in superconducting quantum processors using an optical reference signal prior to a computation or data-loading cycle.
• Fiber-optic data links between classical high-performance computing infrastructure and quantum computing units housed in dilution refrigerators.
• Free-space laser communication channels in quantum computing labs where physical cabling into cryogenic enclosures is impractical.
• Initializing and loading input data into quantum algorithms running on superconducting qubit architectures from a remote, thermally isolated sender.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables direct optical data transfer into cryogenic quantum computers without converting signals to electrical or microwave domains at the cold stage, reducing thermal load.
• The two-phase protocol (reference signal followed by payload) ensures qubits are correctly frequency-locked before data arrives, improving data integrity.
• Supports both free-space and fiber-optic transmission modes, giving flexibility in physical system design and lab layout.
• Keeps the sender at room temperature, avoiding the engineering complexity and cost of operating active transmitter electronics at cryogenic temperatures.
• Leverages mature laser diode and photodiode technology, making the interface between classical and quantum hardware more practical and cost-effective.

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Patent Abstract

In the method for optical transmission of payload data by means of laser from a transmitter to a receiver, the receiver is designed as a quantum computer with superconducting circuits operated near absolute zero temperature and has a photodiode, while the transmitter has a laser diode and is operated at room temperature. By means of the laser diode of the transmitter, a reference frequency signal is sent to the receiver as a free beam or via an optical fiber to specify the frequency of the spins of the electrons that define the quantum dots or the qubits of the quantum computer of the receiver for a specific period of time, and subsequently payload data is sent to the receiver by means of the laser of the transmitter for the specific period of time.