Three-State Qubit Using Degenerate Energy Levels
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Solution Overview
Problem
Conventional qubits represented by two-state physical systems face challenges in scalability and reading out both stored numbers due to the difficulty in accessing the phase information, limiting their application in complex computing devices.
Innovation Solution
A three-state physical system is employed to represent a qubit, where two independent magnitudes are used to store two real numbers, allowing easy readout without relying on the phases, utilizing a first, second, and third energy level that are degenerate with respect to each other, and radio frequency pulses are applied to set and read these magnitudes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two-state physical systems are used to represent qubits, then the quantum computing capability is achieved, but the scalability and ease of reading out both stored numbers are compromised
Solution Approach 1:
The patent transitions from a two-state physical system to a three-state physical system to represent the qubit. This dimensional change allows the system to store two real numbers while making both magnitudes readily readable, as the third state provides an additional reference point that simplifies the measurement process compared to conventional two-state systems.
Solution Approach 2:
The patent changes the physical parameters of the qubit representation by using a three-state system with specific energy levels (first, second, and third energy levels) instead of a two-state system. This parameter change enables the system to maintain quantum computing capability while improving the ease of reading out both stored numbers through the additional energy level structure.
2Adaptability or versatility
If two-state physical systems are used to represent qubits, then the quantum superposition property is achieved, but the scalability to computing devices with more than two or three qubits is compromised
Solution Approach 1:
The patent employs a three-state physical system instead of a two-state system, adding an extra dimension to the qubit representation. This dimensional enhancement provides more robustness and scalability, enabling the system to accommodate larger quantum computing devices with more than two or three qubits while maintaining the quantum superposition property.
3Quantity of substance
If two-state physical systems are used to represent qubits, then the qubit can store two numbers, but only one number (magnitude) can be read out easily while the other number (phase) is extremely difficult to read out
Solution Approach 1:
The patent uses a three-state physical system to represent the qubit, adding a third state that serves as a reference for measurement. This dimensional addition enables both magnitudes (and thus both stored numbers) to be read out easily, as the third state provides an additional reference point that simplifies the measurement of phase information compared to conventional two-state systems.
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
This approach enables easy retrieval of both stored numbers in a qubit, enhancing scalability and computational power by using three-state systems like nuclear spins or ions, facilitating the development of more powerful quantum computers.
Implementation Method 1
The qubit has the property that it can store two numbers at the same time, unlike a classical bit, which can store only one number at any given point in time. This property of storing two numbers at the same time in a qubit leads to extremely powerful computers in terms of speed, parallel processing, memory, and physical size of the computer.
Implementation Method 2
radio frequency pulses are applied to set and read these magnitudes
Data Source
AI summary
A method (and structure) of quantum computing. Two independent magnitudes of a three-state physical (quantum) system are set to simultaneously store two real, independent numbers as a qubit. The three-state physical (quantum) system has a first energy level, a second energy level, and a third energy level capable of being degenerate with respect to one another, thereby forming basis states for the qubit.