Carbon Nanosphere Qubit Storage for Room Temperature Operation
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Solution Overview
Problem
The short electron spin lifetime at room temperature poses a challenge for practical applications of quantum electronic devices, as cooling these systems to below 4K is impractical for commercially viable products due to size, weight, cost, and energy consumption issues.
Innovation Solution
A quantum electronic device utilizing a carbon nanosphere to store a qubit represented by an electron spin, with a control and readout device to set and read the qubit, achieving a long electron spin lifetime at room temperature by using carbon nanospheres with diameters between 20nm and 55nm, and a spintronic device comprising multiple carbon nanospheres with a conductor and isolation layer to facilitate quantum operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If electron spin is used to represent information in quantum devices, then information storage capability is improved, but electron spin lifetime becomes too short for practical applications at room temperature
Solution Approach 1:
The patent changes the physical parameters of the carbon structure by controlling nanosphere diameter (20-55nm range) and temperature conditions to achieve optimal electron spin lifetime. By adjusting these parameters, the system transitions from short-lived spins at room temperature to long-lived spins suitable for quantum computing operations.
Solution Approach 2:
The patent creates a protected environment for electron spins by using carbon nanospheres with specific structural properties that isolate the spins from harmful interactions. The nanosphere structure acts as an inert protective environment, reducing spin-lattice relaxation and extending lifetime without requiring external cooling infrastructure.
2Duration of action of moving object
If the quantum mechanical system is cooled to below 4K to achieve longer electron spin lifetime, then electron spin lifetime is improved to exceed 100 ns, but device size, weight, cost and energy consumption increase making it impractical for commercial distribution
Solution Approach 1:
The carbon nanosphere structure provides self-protection and self-stabilization for electron spins through its inherent structural properties. The nanosphere automatically maintains the quantum state without requiring external cooling systems, making the device self-sufficient and commercially viable.
Solution Approach 2:
The patent replaces the mechanical cooling system (cryogenic infrastructure) with a material-based solution (carbon nanosphere structure). Instead of using external mechanical means to cool the system, the intrinsic properties of the carbon nanosphere material provide the necessary quantum state stabilization at room temperature.
3Adaptability or versatility
If fullerene-based electron-spin quantum devices are used, then quantum computing capability is enabled, but electron spin lifetime remains too short for practical applications
Solution Approach 1:
The patent introduces local structural variations within the carbon nanosphere system by controlling nanosphere diameter and internal structure. This local quality adjustment optimizes the electron spin environment specifically at the nanosphere site, extending lifetime without affecting overall quantum computing functionality.
Solution Approach 2:
The patent uses composite carbon structures combining nanosphere morphology with specific internal arrangements to achieve both long electron spin lifetime and quantum computing capability. The composite nature of the carbon nanosphere material provides multiple beneficial properties simultaneously.
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
The carbon nanosphere-based quantum electronic device achieves a remarkably long electron spin lifetime of 115 ns at room temperature, enabling efficient quantum operations without the need for cryogenic cooling, thus making it suitable for commercially distributed products.
Implementation Method 1
a quantum electronic device comprises a carbon nanosphere adapted to store a qubit represented by an electron spin
Implementation Method 2
a control and readout device to set the qubit and read the qubit stored on the carbon nanosphere
Data Source
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AI summary
This disclosure relates to quantum electronic devices for storing qubits. In particular, this disclosure relates to a quantum electronic device comprising a carbon nanosphere adapted to store a qubit represented by an electron spin and a control and readout device to set the qubit and read the qubit stored on the carbon nanosphere. Qubits stored on carbon nanospheres have a long electron spin lifetime at room temperature. This disclosure further relates to a method for quantum computing. The method comprises storing a qubit represented by an electron spin on a carbon nanosphere, performing a quantum operation on the qubit to generate a resulting qubit and reading the resulting qubit from the nanosphere. There is further provided a spintronic device comprising multiple carbon nanospheres adapted to provide a qubit represented by an electron spin in that carbon nanosphere and a control device to facilitate interaction between the qubits to perform a quantum operation.