Mixed-Species Ion Qubit Swapping With Non-Adiabatic Gates
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Solution Overview
Problem
Combining different qubit types in a single ion species is challenging due to the mismatch between atomic elements suitable for quantum communication and memory qubits, requiring faster quantum information transfer to maintain high fidelity, and existing adiabatic gates are slow and constrained by trap periods.
Innovation Solution
Implementing non-adiabatic gates, such as state-dependent kicks (SDKs), combined with fast manipulation of the trapping potential, to entangle mixed species qubits and facilitate ultrafast quantum information transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If adiabatic gates are used to entangle qubits, then the gate operation is smooth and controlled, but the gate speed is slow and constrained by trap periods
Solution Approach 1:
The patent applies non-adiabatic gates that dynamically manipulate the trapping potential at speeds much faster than the natural trap period. By using time-varying potentials that change rapidly (faster than the trap oscillation period), the system achieves ultrafast gate operations while maintaining fidelity through precise control of the dynamic potential changes.
Solution Approach 2:
The invention changes the temporal scale of gate operations by using non-adiabatic parameter changes in the trapping potential. Instead of slow adiabatic changes, the patent employs rapid parameter variations that occur on timescales much shorter than the trap period, enabling faster quantum information transfer between mixed species qubits.
2Adaptability or versatility
If mixed species qubits are combined in a single ion species, then the system achieves versatility, but the atomic element mismatch reduces transfer fidelity
Solution Approach 1:
The patent uses non-adiabatic gates as an intermediary mechanism to bridge different qubit types. By employing these specialized gates that can operate on mixed species qubits with different atomic properties, the system achieves high-fidelity transfer between communication and memory qubits despite the atomic element mismatch.
Solution Approach 2:
The dynamic manipulation of the trapping potential allows the system to adapt to different qubit types. The time-varying potential changes can be tuned to match the specific requirements of different atomic species, enabling versatile operation across mixed species while maintaining high transfer fidelity through optimized dynamic control.
3Reliability
If faster quantum information transfer is implemented, then the fidelity is maintained, but the gate operation becomes more complex
Solution Approach 1:
The patent achieves fast transfer by implementing rapid parameter changes in the trapping potential. By using non-adiabatic gate operations that vary the potential on timescales much shorter than the trap period, the system achieves ultrafast quantum information transfer. The complexity is managed through precise control of these parameter changes rather than through complex multi-step procedures.
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
Non-adiabatic gates enable faster and higher fidelity quantum information swapping between communication and memory qubits, overcoming the limitations of adiabatic gates by operating at speeds independent of trap periods.
Implementation Method 1
a non-adiabatic gate coupling the interconnect qubit to the plurality of non-interconnect qubits
Implementation Method 2
entangling at least a pair of interconnect qubits using photonic interconnects via a reconfigurable photonic entangler
Implementation Method 3
an ion trap configured to trap a first trapped ion of multiple arrays of trapped ions, the ion trap having a trapping potential that switchable between a first trapping potential and a second trapping potential
Implementation Method 4
the ion trap having a trapping potential that switchable between a first trapping potential and a second trapping potential
Implementation Method 5
an optical system configured to generate pairs of optical pulses
Implementation Method 6
readily entangled with each other by modulating their Coulomb interaction with suitable external control fields such as optical or microwave fields
Data Source
AI summary
Aspects of the present disclosure relate generally to systems and methods for interconnecting mixed species qubit entanglements with non-adiabatic gates. The method includes entangling at least a pair of interconnect qubits using photonic interconnects via a reconfigurable photonic entangler configured to entangle a pair of communication qubits from QPUs such that photons entangled with interconnect qubit states are collected in optical fibers. Each QPU includes non-interconnect qubits, an interconnect qubit coupled to the reconfigurable photonic entangler with an optical fiber, and a non-adiabatic gate coupling the interconnect qubit to the plurality of non-interconnect qubits. The method includes transferring information from the pair of entangled interconnect qubits to a respective non-communication qubit using the non-adiabatic gate. The method includes executing at least one quantum computation on at least one of the plurality of QPUs using a non-interconnect qubit as a resource for at least one gate between the plurality of QPUs.