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A Porous Array of Clock Qubits.

Joseph M Zadrozny1, Audrey T Gallagher1, T David Harris1

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Researchers created clocklike qubits in porous materials for quantum sensing. This approach shields qubits from magnetic noise, enabling precise quantum processors and sensors with long lifetimes.

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Area of Science:

  • Quantum information science
  • Materials science
  • Chemistry

Background:

  • Atomic-level control of qubits is essential for quantum computing and sensing.
  • Embedding qubits in porous materials offers precise spatial arrangement and analyte infusion for sensors.
  • Qubits are highly sensitive to magnetic noise, posing a significant challenge for integration into porous hosts.

Purpose of the Study:

  • To develop a method for creating robust, spatially controlled qubits within porous materials.
  • To leverage atomic physics principles to mitigate magnetic noise affecting qubits in crystalline porous frameworks.
  • To demonstrate the feasibility of clocklike qubits in metal-organic frameworks for quantum applications.

Main Methods:

  • Utilized coordination chemistry to design a metal-organic framework (MOF).
  • Integrated cobalt(II) spins as qubits within the MOF structure.
  • Employed electron paramagnetic resonance (EPR) spectroscopy to verify clocklike transitions and measure qubit properties.

Main Results:

  • Successfully created an array of clocklike qubits within a specific metal-organic framework: [(TCPP)Co0.07Zn0.93]3[Zr6O4(OH)4(H2O)6]2.
  • Demonstrated clocklike transitions in qubits hosted by a porous material for the first time.
  • Achieved qubit lifetimes of up to 14 microseconds, even with significant local nuclear spin density.

Conclusions:

  • The developed clocklike qubits in porous materials offer a promising platform for quantum sensing and processing.
  • This approach provides high structural precision and inherent shielding from magnetic noise.
  • Opens new avenues for creating advanced quantum devices with enhanced stability and functionality.