Endohedral Fullerene Atomic Clock With Magnetic-Field Stabilization
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Solution Overview
Problem
Conventional atomic clocks are large, delicate, and have significant power requirements, making them unsuitable for compact, reliable, and portable applications, and they face challenges in reducing environmental influences and achieving practical measurement and control, especially in portable devices.
Innovation Solution
An atomic clock apparatus using a condensed matter medium with endohedral fullerenes, a magnet device for adjustable magnetic fields, an excitation device for transitions, a detection device for response measurement, and a controller to stabilize the magnetic field and derive oscillations at a frequency determined by the energy difference between states, minimizing environmental influences and improving precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional atomic clocks use gas phase atoms in a tunable microwave cavity, then time-keeping precision is improved, but device size and power consumption increase
Solution Approach 1:
The patent changes the physical state parameter of the atomic medium from gas phase to condensed matter phase (solid or liquid). This phase transition enables the atomic clock to achieve high precision time-keeping while dramatically reducing device size and power consumption, as condensed matter can be contained in much smaller volumes and requires less complex vacuum and cooling systems
Solution Approach 2:
The patent replaces the mechanical microwave cavity system with an optical resonance system. Instead of using microwaves in a large tunable cavity, the invention uses optical frequency transitions in condensed matter atoms, which can be contained in much smaller volumes and do not require large resonant structures
2Measurement precision
If conventional atomic clocks use gas phase atoms, then time-keeping precision is improved, but device reliability and portability worsen due to delicacy and power requirements
Solution Approach 1:
Changing the atomic medium from gas phase to condensed matter phase eliminates the need for complex vacuum systems and reduces sensitivity to environmental disturbances. The condensed matter atoms are contained in a stable solid or liquid matrix that provides mechanical robustness and reduces vulnerability to shocks and vibrations, thereby improving reliability and portability
Solution Approach 2:
The patent uses composite material structures where atoms are embedded in a solid or liquid matrix. This composite approach provides both the quantum properties needed for precise time-keeping and the mechanical stability required for reliable operation in portable devices. The matrix material protects the atoms while allowing optical access for measurement
3Volume of moving object
If endohedral fullerenes are used in solid state atomic clock, then device compactness is improved, but measurement and control precision worsens due to environmental influences
Solution Approach 1:
The patent applies local quality by creating a controlled microenvironment around each atom in the condensed matter medium. The solid or liquid matrix provides a uniform local environment that shields atoms from external disturbances while maintaining the quantum coherence needed for precise measurements. This local control approach enables compact device design without sacrificing measurement precision
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 solution provides a compact, reliable, and low-power atomic clock with enhanced precision and stability, reducing errors due to magnetic field fluctuations and decoherence, achieving accuracy six orders of magnitude better than reference oscillators, suitable for portable applications.
Implementation Method 1
a magnet device arranged to apply an adjustable magnetic field to the medium
Implementation Method 2
an excitation device arranged to cause the at least one system to undergo transitions between said pair of states; wherein the energy difference varies as a function of applied magnetic field
Implementation Method 3
a detection device arranged to detect the response of the at least one system induced by the excitation device
Implementation Method 4
a controller for receiving the output of the detection device and arranged to control the magnet device such that the magnetic field applied to the medium has a value at which the rate of change of said energy difference with change in magnetic field is substantially zero
Data Source
AI summary
An atomic clock comprises endohedral fullerene systems which provide the standard frequency oscillations. A magnet device applies a magnetic field to the endohedral fullerenes. The applied magnetic field is adjustable. An excitation device both excites each endohedral fullerene system to cause it to undergo transitions which generate the time-keeping oscillations, and also probes the systems such that the oscillations can be measured and the device controlled. A detection device senses the response of the systems induced by the excitation device. The output of the detection device is fed to a controller. The controller produces the atomic clock output, which is the clock signal or frequency standard, and also controls the magnet device and the excitation device. The controller controls the magnetic field applied by the magnet device such that the energy difference of the time-keeping transition is insensitive to variations in magnetic field, thereby stabilizing the frequency of the oscillations and avoiding the effects of changes in external magnetic field.