Rydberg Vapor-Cell Sensor for Broad-Spectrum EM Analysis
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Solution Overview
Problem
Current quantum sensors lack sensitivity and are unable to measure the spectrum of electromagnetic signals over a broad spectral range.
Innovation Solution
A sensor system comprising a vapor cell with gaseous atoms, excitation sources, electrode pairs, and a processor to detect current changes caused by ionized atoms, allowing for high sensitivity and broad spectral range analysis of EM signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If quantum sensors are used to detect EM radiation, then quantum sensing capability is achieved, but sensitivity is insufficient compared to traditional receivers
Solution Approach 1:
The sensor system segments the detection process by using multiple electrode pairs arranged at different positions along the vapor cell. Each electrode pair detects local ionization events, and the processor integrates signals from multiple electrodes to achieve high sensitivity and broad spectral coverage simultaneously
Solution Approach 2:
The patent embeds multiple functional components within a unified vapor cell structure: the quantum atoms are contained within the vapor cell, which also houses multiple electrode pairs for detection. This nested arrangement allows the system to achieve both quantum sensing capability and high sensitivity without requiring separate external systems
2Adaptability or versatility
If quantum sensors are used for EM radiation detection, then quantum sensing is achieved, but the ability to measure spectrum over broad spectral range is limited
Solution Approach 1:
The sensor system achieves multi-functionality by using a single vapor cell configuration that can detect EM radiation across multiple frequency ranges (microwave, radio frequency, and optical signals). The Rydberg atoms serve universal detection purposes for different spectral regions, eliminating the need for separate sensors for each frequency range
Solution Approach 2:
The patent extends the detection capability from a single frequency point to a broad spectral range by introducing spatial dimensionality through multiple electrode pairs positioned at different locations. This spatial arrangement enables the system to capture spectral information across different frequencies simultaneously, transforming a one-dimensional frequency measurement into a multi-dimensional spectral analysis
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 system enables high sensitivity and broad spectral range analysis of EM signals, including RF, MW, and optical signals, by utilizing Rydberg states of atoms to detect current changes induced by varying electric and magnetic fields.
Implementation Method 1
at least one excitation source configured to excite a number of atoms in the vapor cell to a Rydberg state, wherein at least a fraction of the excited atoms are ionized
Implementation Method 2
a quantum sensor which employs such a quantum system can detect EM radiation by resonant transitions between two energy states in the quantum system
Implementation Method 3
an electric and/or magnetic field generator configured to generate a spatially and/or temporally varying electric and/or magnetic field in the vapor cell
Implementation Method 4
an electric and/or magnetic field generator configured to generate a spatially and/or temporally varying electric and/or magnetic field in the vapor cell
Implementation Method 5
a current sense circuit configured to detect a current between at least one of the number of electrode pairs, wherein the current is caused by ionized atoms in the vapor cell
Data Source
AI summary
The present disclosure relates to a sensor system for analyzing a spectrum of an electromagnetic, EM, signal. The system includes a vapor cell containing at least one species of atoms in a gaseous form, wherein the atoms in the vapor cell are exposed to the EM signal; at least one excitation source excites a number of atoms in the vapor cell to a Rydberg state, wherein at least a fraction of the excited atoms are ionized; a number of electrode pairs which are arranged along the vapor cell, and which generate a spatially and/or temporally varying electric field in the vapor cell; a current sense circuit detects a current between at least one of the number of electrode pairs, wherein the current is caused by ionized atoms in the vapor cell; and a processor determines spectral information of the EM signal based on the detected current.