Superconducting Qubit Array for Scalable 2D Cluster-State Generation
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Solution Overview
Problem
Current methods for generating two-dimensional cluster states of microwave photon sequences lack a specific device for scaling up quantum entanglement generation in measurement-based quantum computation.
Innovation Solution
A quantum entanglement generator comprising n qubit elements with a coupling resonator and waveguides, capable of generating quantum entanglement between adjacent qubit elements, which emit entanglement as propagating microwave photons to form a two-dimensional cluster state, with each qubit element having three electrodes and a readout resonator for state reading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to generate two-dimensional cluster states, then quantum entanglement can be generated, but the hardware complexity increases and scalability is limited
Solution Approach 1:
The system divides the quantum entanglement generation into modular qubit elements, each with a standardized structure of three electrodes and a readout resonator. These modular units can be independently fabricated and then assembled into larger two-dimensional arrays, reducing overall hardware complexity while maintaining entanglement generation capability
Solution Approach 2:
The patent implements a hierarchical structure where qubit elements are nested within a two-dimensional array architecture. Each qubit element contains nested components (electrodes within resonators, which are within the larger array structure), allowing scalable expansion from single elements to large-scale quantum systems without proportionally increasing control complexity
2Quantity of substance
If the number of qubit elements is increased to generate larger cluster states, then the scale of quantum computation improves, but the device complexity and difficulty of control increase
Solution Approach 1:
The patent designs a universal qubit element structure with three electrodes and a readout resonator that can serve multiple functions: generating quantum entanglement, storing quantum information, and enabling readout. This multi-functional design allows the same basic unit to be replicated across the entire two-dimensional array, simplifying control architecture as the system scales
Solution Approach 2:
The system transitions from one-dimensional or small-scale qubit arrangements to a two-dimensional array architecture. This dimensional expansion allows for more efficient connectivity and interaction patterns between qubits, enabling larger cluster states to be generated without proportionally increasing control complexity, as neighboring qubits in the 2D grid can interact more efficiently
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
Enables the efficient generation of two-dimensional cluster states, facilitating large-scale quantum computation with reduced hardware complexity and improved scalability.
Implementation Method 1
a coupling resonator disposed between adjacent qubit elements, and waveguides (for example, coaxial lines and coplanar waveguides). The quantum entanglement generator generates quantum entanglement between the adjacent qubit elements by causing a two-qubit gate between the adjacent qubit elements using the coupling resonator
Implementation Method 2
The qubit elements emit the quantum entanglement as propagating microwave photons into the waveguide, thereby generating a two-dimensional cluster state
Data Source
AI summary
A quantum entanglement generator comprises two superconducting qubit elements, each having three electrodes, where n is an integer greater than or equal to, a coupling resonator disposed between adjacent superconducting qubit elements and a waveguide capacitively coupled to each of the superconducting qubit elements and to each other. The coupling resonator generates quantum entanglement between the adjacent superconducting qubit elements by acting a two-qubit gate between the adjacent superconducting qubit elements. The superconducting qubit elements emit the quantum entanglement as a propagating microwave photon into the waveguide, thereby generating a two-dimensional cluster state.