Multidimensional Ion Shuttling Electrode Control With DAC Multiplexing
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Solution Overview
Problem
Trapped ion quantum computing systems require precise ion handling and cryogenic conditions, necessitating complex and costly control of hundreds of electrodes, which complicates the system design and increases power consumption.
Innovation Solution
A multidimensional ion shuttling system using a limited number of digital-to-analog converters (DACs) to control multiple electrodes, reducing the number of electrical connections and simplifying the cryogenic containment system by employing a multidimensional array with electrode multiplexing and latch-based control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If hundreds of electrodes are controlled individually in trapped ion quantum computing systems, then precise ion handling is achieved, but device complexity and power consumption increase significantly
Solution Approach 1:
Multiple electrodes that previously required individual control are merged into groups, with each group controlled by a single electrode control circuit. This grouping strategy reduces the total number of control circuits needed while maintaining precise ion handling capabilities through coordinated electrode activation within each group.
Solution Approach 2:
Electrode control circuits are designed with multi-functionality to manage multiple electrodes across different lanes. A single control circuit can activate different subsets of electrodes depending on the operational requirements, enabling the same hardware to perform multiple control functions without requiring dedicated circuits for each electrode.
2Manufacturing precision
If hundreds of electrodes are controlled individually, then precise ion positioning is achieved, but power consumption increases
Solution Approach 1:
Electrodes are grouped such that multiple electrodes share a common control circuit and power supply. This merging reduces the total power consumption by eliminating redundant control circuitry and reducing the number of independent power channels needed, while still achieving precise ion positioning through coordinated electrode activation.
Solution Approach 2:
Instead of activating all electrodes simultaneously or maintaining continuous control signals to all electrodes, the system activates only the necessary subset of electrodes within each group for each specific ion positioning task. This partial action approach reduces power consumption by keeping unnecessary electrodes inactive while maintaining positioning precision.
3Adaptability or versatility
If many electrical connections are used to control electrodes, then comprehensive electrode control is achieved, but the cryogenic containment system becomes more complex and costly
Solution Approach 1:
Multiple electrode connections are merged into fewer connection channels by implementing shared control circuits that can selectively activate different electrodes. This reduces the number of physical connections required to penetrate the cryogenic containment system, simplifying the overall system architecture while maintaining comprehensive electrode control capability.
Solution Approach 2:
Electrode control circuits serve as intermediary components between the control system and the electrodes. These intermediaries consolidate multiple electrode control functions into fewer connection points, reducing the number of direct connections needed through the cryogenic barrier while maintaining full control capability over all electrodes.
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 reduces the cost and power requirements while enhancing flexibility and efficiency in ion shuttling, allowing for precise control of ions in a well-controlled environment.
Implementation Method 1
the at least one voltage controls movement of an ion along at least one of the first shuttling lane or the second shuttling lane
Implementation Method 2
shuttling an ion along the first shuttling lane by generating an electrical field (E-field), where the E-field is generated by applying the selected voltage of each first shuttling electrode element
Data Source
AI summary
A method and apparatus for multidimensional ion shuttling, the apparatus including a first shuttling lane having first lane elements, a second shuttling lane having second lane elements with the second shuttling lane intersecting the first shuttling lane, first electrode elements along the first movement lane, second electrode elements along the second movement lane, an electrode control circuit connected to each of the first and second electrode elements, and a voltage control circuit connected to each electrode element of the first electrode elements and the second electrode elements. The voltage control circuit selectively provides at least one voltage to one or more electrode elements of the first electrode elements and of the second electrode elements according to signaling from the electrode control circuit, and the at least one voltage controls movement of an ion along at least one of the first shuttling lane or the second shuttling lane.