Superconducting Interposer for Virtual-Photon Qubit Transmission
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Solution Overview
Problem
As the number of qubits on a quantum processor increases, existing planar structures are inadequate for efficiently transmitting quantum information between separate qubits, particularly for quantum error correction applications, as they are prone to errors due to real photon transfer and dielectric loss.
Innovation Solution
A system utilizing a superconducting interposer with dielectric material and superconducting structures that enables quantum information transmission between ancilla and data qubits via virtual photons, reducing the impact of electromagnetic Purcell effect and dielectric loss, while allowing for strong coupling of ancilla qubits with the environment for fast measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If planar structures such as bus resonators are used to transmit quantum information, then the transmission can be achieved, but the transmission is prone to errors due to real photon transfer and dielectric loss
Solution Approach 1:
The patent introduces a superconducting interposer as an intermediary component between the data qubit chip and ancilla qubit chip. This interposer contains superconducting structures that enable quantum information transmission through virtual photons rather than direct real photon transfer, thereby reducing the harmful effects of dielectric loss and transmission errors while maintaining reliable quantum communication between separate qubit chips
2Reliability
If ancilla qubits are strongly coupled to data qubits for error detection, then error correction capability is improved, but the complexity of the system increases
Solution Approach 1:
The patent segments the quantum error correction system into distinct functional components: a data qubit chip containing data qubits, a separate ancilla qubit chip containing ancilla qubits, and a superconducting interposer connecting them. This segmentation allows each component to be optimized independently - the ancilla qubits can be strongly coupled to data qubits through the interposer for effective error detection, while the overall system architecture remains manageable through modular separation of functions
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 solution effectively transmits quantum information between qubits, enhancing quantum error correction by reducing noise and preserving the coherence of data qubits, while enabling frequent measurements of ancilla qubits for error detection and correction.
Implementation Method 1
a superconducting interposer with dielectric material and superconducting structures that enables quantum information transmission between ancilla and data qubits via virtual photons
Implementation Method 2
The superconducting structures enable transmission of quantum information between the plurality of data qubits on the data qubit chip and the plurality of ancilla qubits on the ancilla qubit chip via virtual photons
Data Source
AI summary
A system for transmission of quantum information for quantum error correction includes an ancilla qubit chip including a plurality of ancilla qubits, and a data qubit chip spaced apart from the ancilla qubit chip, the data qubit chip including a plurality of data qubits. The system includes an interposer coupled to the ancilla qubit chip and the data qubit chip, the interposer including a dielectric material and a plurality of superconducting structures formed in the dielectric material. The superconducting structures enable transmission of quantum information between the plurality of data qubits on the data qubit chip and the plurality of ancilla qubits on the ancilla qubit chip via virtual photons for quantum error correction.