Superconducting interposer for the transmission of quantum information for quantum error correction
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Solution Overview
Problem
As the number of qubits on a quantum processor increases, existing planar structures for transmitting quantum information between separate chips are inadequate for effective quantum error correction, particularly due to susceptibility to real photon transfer and environmental noise.
Innovation Solution
A system utilizing detuned superconducting resonators for virtual photon transfer between data and ancilla qubits, preventing real photon transfer and reducing environmental noise, allowing for efficient quantum information mapping and error correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If planar structures such as bus resonators are used to transmit quantum information between qubits on separate chips, then the structure is simple and easy to manufacture, but real photon transfer occurs causing quantum error correction failures and environmental noise susceptibility
Solution Approach 1:
The patent introduces a detuned superconducting resonator as an intermediary mediator between data qubits and ancilla qubits. This resonator operates at a frequency detuned from both qubit frequencies, enabling virtual photon transfer without real photon transfer. The intermediary resonator couples to both qubit types through weak coupling mechanisms, allowing quantum information to be exchanged while preventing direct real photon transfer that would cause errors and environmental noise susceptibility.
2Reliability
If resonators are detuned from qubit frequencies to prevent real photon transfer, then quantum information integrity is maintained, but coupling strength between resonators and qubits is reduced
Solution Approach 1:
The patent applies parameter changes by detuning the resonator frequency from the qubit frequencies. Specifically, the resonator is tuned to a frequency that is detuned from both the data qubit frequency and the ancilla qubit frequency. This frequency parameter change enables virtual photon transfer mechanisms that maintain quantum information integrity while the coupling strength is managed through the detuning parameter to achieve appropriate energy transfer efficiency for quantum error correction operations.
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 enables robust quantum error correction by preventing real photon transfer and protecting quantum information from environmental noise, ensuring the integrity of data qubits while allowing fast measurement and control of ancilla qubits.
Implementation Method 1
mapping quantum information from the plurality of data qubits to the plurality of ancilla qubits via virtual photon transfer from the plurality of data qubits to the plurality of ancilla qubits through the individual superconducting resonators
Implementation Method 2
The individual superconducting resonators have respective frequencies that are detuned from a first frequency of the respective data qubit and a second frequency of the respective ancilla qubit to prevent real photon transfer
Implementation Method 3
maintaining quantum information integrity and coherence, reducing the Purcell effect and dielectric loss
Implementation Method 4
maintaining quantum information integrity and coherence, reducing the Purcell effect and dielectric loss
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.