A scalable architecture for quantum computation with molecular nanomagnets

Abstract

A proposal for a magnetic quantum processor that consists of individual molecular spins coupled to superconducting coplanar resonators and transmission lines is carefully examined. We derive a simple magnetic quantum electrodynamics Hamiltonian to describe the underlying physics. It is shown that these hybrid devices can perform arbitrary operations on each spin qubit and induce tunable interactions between any pair of them. The combination of these two operations ensures that the processor can perform universal quantum computations. The feasibility of this proposal is critically discussed using the results of realistic calculations, based on parameters of existing devices and molecular qubits. These results show that the proposal is feasible, provided that molecules with sufficiently long coherence times can be developed and accurately integrated into specific areas of the device. This architecture has an enormous potential for scaling up quantum computation thanks to the microscopic nature of the individual constituents, the molecules, and the possibility of using their internal spin degrees of freedom.

arXiv comment27 pages, 6 figures

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Cited by in corpus (24)

• Role of vibrations on decoherence in molecular spin qubits: The case of [Cu(mnt)${}_2$]${}^{2-}$
• Quantum computers as universal quantum simulators: state-of-art and perspectives
• Three addressable spin qubits in a molecular single-ion magnet
• A perspective on scaling up quantum computation with molecular spins
• Enhanced molecular spin-photon coupling at superconducting nanoconstrictions
• Spatially Resolving Electron Spin Resonance of $\pi$-Radical in Single-molecule Magnet
• Blueprint of a Molecular Spin Quantum Processor
• Photon Condensation and Enhanced Magnetism in Cavity QED
• Counteracting dephasing in Molecular Nanomagnets by optimized qudit encodings
• Chemical tuning of spin clock transitions in molecular monomers based on nuclear spin-free Ni(II)
• Spin squeezing by one-photon-two-atom excitations processes in atomic ensembles
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• Dispersive readout of molecular spin qudits
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• Microwave dual-mode resonators for coherent spin-photon coupling
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• High cooperativity coupling to nuclear spins on a circuit QED architecture
• Cavity-Modified Zeeman Effect via Spin-Polariton Formation
• A switching approach for perfect state transfer over a scalable and routing enabled network architecture with superconducting qubits