Optical Logic Gate Using Carrier-Envelope Phase Current Summation
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Solution Overview
Problem
Conventional electronic logic gates are limited by the speed of voltage and current propagation, restricting the execution speed of algorithms to below 10 GHz, which is not sufficient for modern applications.
Innovation Solution
A logic gate device utilizing a probe structure that encodes logic input states in the carrier-envelope phase of light pulses, generating currents that can be processed at frequencies above 100 THz, enabling simultaneous information conversion and gate operations through ultrafast strong-field manipulation of charge carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional electronic structures (transistors or diodes) are used to implement logic gates, then the device complexity is reduced and ease of manufacture is improved, but the processing speed is limited to below 10 GHz due to voltage and current propagation dynamics
Solution Approach 1:
The patent replaces conventional electronic voltage and current signals with optical fields (light pulses) to encode and process logic states. The probe structure converts optical carrier-envelope phase information into electrical current components, enabling logic operations at optical frequencies (above 100 THz) rather than electronic frequencies (below 10 GHz), thereby achieving a fundamental speed increase by substituting the physical domain of operation from electronic to optical-mechanical hybrid regime
Solution Approach 2:
The invention changes the encoding parameter from voltage levels to carrier-envelope phase of light pulses. By modulating the carrier-envelope phase of optical fields and detecting the resulting current components, the system operates at optical frequencies while maintaining logical functionality, thus resolving the speed limitation imposed by electronic propagation dynamics
2Speed
If voltage or current values are used to encode logic states, then the encoding and processing is straightforward with conventional electronics, but the fundamental speed limit is governed by propagation dynamics of voltages and currents
Solution Approach 1:
The patent substitutes conventional voltage/current encoding with optical field encoding using carrier-envelope phase modulation. The probe structure serves as a transducer that converts optical phase information into electrical current components, enabling the system to leverage the high frequency capability of optical fields while maintaining electrical readout compatibility, thus achieving high-speed processing with manageable operational complexity
Solution Approach 2:
The probe structure acts as an intermediary device that bridges the optical domain (for high-speed encoding) and the electrical domain (for conventional processing and readout). It converts carrier-envelope phase information from light pulses into current components that can be summed and detected, facilitating easy operation while achieving optical-speed processing
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 allows for significantly faster processing of information compared to conventional electronic devices, enabling logic operations at frequencies far beyond the limitations of traditional electronics.
Implementation Method 1
the probe structure is arranged to be irradiated by the first light pulse in a first interaction region to generate a first current component within the probe structure that depends on the first carrier-envelope phase, and the probe structure is arranged to be irradiated by the second light pulse in a second interaction region to generate a second current component within the probe structure that depends on the second carrier-envelope phase
Data Source
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AI summary
A logic gate device (1) comprising a probe structure (110) having an interface contact (120), a first logic input (10) for receiving a first light pulse (212) having a first carrier-envelope phase that encodes an input state of the first logic input (10) and a second logic input (12) for receiving a second light pulse (222) having a second carrier-envelope phase that encodes an input state of the second logic input (12). The probe structure (110) is arranged to be irradiated by the first light pulse (212) to generate a first current component within the probe structure that depends on the first carrier-envelope phase and to be irradiated by the second light pulse (222) to generate a second current component within the probe structure that depends on the second carrier-envelope phase. The interface contact (120) is arranged to output a sum current that comprises the first and second current component, wherein the sum current encodes a logic output state of a logic output.