Quantum Transaction Verification Using Non-Orthogonal Qubit Bases
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Solution Overview
Problem
Existing blockchain transactions face challenges in securing digital assets, particularly in smart contracts, where it is difficult to verify delivery to the receiver, and reliance on third-party escrow services introduces trust issues.
Innovation Solution
A quantum-encrypted data transmission method using mutually non-orthogonal bases to prepare qubits, allowing the sender to verify if the receiver has measured the qubits by comparing bit values, and employing error correction codes and intermediary devices to ensure secure data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quantum-encrypted data transmission using mutually non-orthogonal bases is used, then security of digital asset delivery is improved, but device complexity increases
Solution Approach 1:
The patent introduces a quantum intermediary device that acts as a mediator between the quantum transmitting apparatus and quantum receiving apparatus. This intermediary prepares qubits in specific quantum states using mutually non-orthogonal bases and facilitates the secure transmission by comparing bit values to detect unauthorized measurements, thereby enhancing security while managing system complexity through centralized coordination
Solution Approach 2:
The patent employs parameter changes by utilizing mutually non-orthogonal bases for preparing quantum states. By changing the basis parameters (from orthogonal to non-orthogonal), the system achieves enhanced security properties where eavesdropping or unauthorized measurement introduces detectable errors, while the underlying quantum mechanical principles remain consistent
2Reliability
If third-party escrow services are used to verify transactions, then trust in transaction verification is improved, but loss of information increases due to copying valuable digital assets
Solution Approach 1:
The patent extracts the verification function from traditional third-party escrow services and implements it directly within the quantum transmission system itself. The quantum intermediary device performs verification by comparing bit values of transmitted and received qubits, eliminating the need for external escrow services that would require copying and holding confidential assets
Solution Approach 2:
The quantum transmission system performs self-verification through the quantum intermediary device that automatically detects unauthorized measurements by comparing bit values. This self-service mechanism eliminates dependency on external third parties, maintaining transaction integrity without requiring them to possess or copy confidential digital assets
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures secure and trustless verification of digital asset delivery, reducing the need for third-party intermediaries and enhancing the security of smart contracts.
Implementation Method 1
preparing each of the plurality of bits in a respective one of a second sequence of mutually non-orthogonal bases, to give a plurality of qubits
Implementation Method 2
the receiving apparatus measures the plurality of qubits according to the first sequence of mutually non-orthogonal bases
Implementation Method 3
comparing the bit values of the returned stream with those of the transmitted plurality of qubits and if more than a threshold proportion of these bit values do not match, the transmitting apparatus determines that the receiving apparatus has measured the plurality of qubits
Data Source
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AI summary
There is herein provided a method of quantum communication, the method comprising: indicating to a quantum receiving apparatus that a first sequence of mutually non-orthogonal bases will be used to prepare at least some of a plurality of bits in quantum states, at a quantum transmitting apparatus, preparing each of the plurality of bits in a respective one of a second sequence of mutually non-orthogonal bases, to give a plurality of qubits, wherein the second sequence of mutually non-orthogonal bases is different to the first sequence of mutually non-orthogonal bases.