Toward long-range entanglement between electrically driven single-molecule magnets

Abstract

Over the past two decades, several molecules have been explored as possible building blocks of a quantum computer, a device that would provide exponential speedups for a number of problems, including the simulation of large, strongly correlated chemical systems. Achieving strong interactions and entanglement between molecular qubits remains an outstanding challenge. Here, we show that the TbPc${}_2$ single-molecule magnet has the potential to overcome this obstacle due to its sensitivity to electric fields stemming from the hyperfine Stark effect. We show how this feature can be leveraged to achieve long-range entanglement between pairs of molecules using a superconducting resonator as a mediator. Our results suggest that the molecule-resonator interaction is near the edge of the strong-coupling regime and could potentially pass into it given a more detailed, quantitative understanding of the TbPc${}_2$ molecule.

arXiv comment27 pages, 4 figures

References in corpus (42)

• Polynomial-Time Algorithms for Prime Factorization and Discrete Logarithms on a Quantum Computer
• Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
• Quantum Computing
• Quantum Computing in Molecular Magnets
• Coupling Superconducting Qubits via a Cavity Bus
• Coherent control of a single electron spin with electric fields
• Towards Quantum Chemistry on a Quantum Computer
• Storing quantum information for 30 seconds in a nanoelectronic device
• Quantum tunneling of magnetization in lanthanide single-molecule magnets, bis(phthalocyaninato)terbium and bis(phthalocyaninato)-dysprosium anions
• High-fidelity readout and control of a nuclear spin qubit in silicon
• Detecting arbitrary quantum errors via stabilizer measurements on a sublattice of the surface code
• Planar Superconducting Resonators with Internal Quality Factors above One Million
• High cooperativity coupling of electron-spin ensembles to superconducting cavities
• A Coherent Spin-Photon Interface in Silicon
• Strong spin-photon coupling in silicon
• Molecular Spin Qudits for Quantum Algorithms
• Fidelity of quantum operations
• Magnetic qubits as hardware for quantum computers
• Cavity-QED based on collective magnetic dipole coupling: spin ensembles as hybrid two-level systems
• One-second coherence for a single electron spin coupled to a multi-qubit nuclear-spin environment
• High Kinetic Inductance Superconducting Nanowire Resonators for Circuit QED in a Magnetic Field
• Coherent spin-qubit photon coupling
• Mesoscopic Cavity Quantum Electrodynamics with Quantum Dots
• Reducing intrinsic loss in superconducting resonators by surface treatment and deep etching of silicon substrates
• A fault-tolerant addressable spin qubit in a natural silicon quantum dot
• Decoherence in Crystals of Quantum Molecular Magnets
• Direct Observation of Quantum Coherence in Single-Molecule Magnets
• Superconductor-semiconductor hybrid cavity quantum electrodynamics
• Microwave-induced coupling of superconducting qubits
• Electrically controlling single spin qubits in a continuous microwave field
• Coherent manipulation of a molecular Ln-based nuclear qudit coupled to an electron qubit
• A scalable architecture for quantum computation with molecular nanomagnets
• Exactly solvable two-level quantum systems and Landau-Zener interferometry
• Analytical approach to swift nonleaky entangling gates in superconducting qubits
• Coherent long-distance spin-qubit-transmon coupling
• Robust two-qubit gates for donors in silicon controlled by hyperfine interactions
• Robustness of error-suppressing entangling gates in cavity-coupled transmon qubits
• Fast high-fidelity entangling gates for spin qubits in Si double quantum dots
• Multireference Ab Initio Studies of Magnetic Properties of Terbium-Based Single-Molecule Magnets
• Implementation of a generalized CNOT gate between fixed-frequency transmons
• Quantum Algorithms for Quantum Chemistry based on the sparsity of the CI-matrix
• Robust electric dipole transition at microwave frequencies for nuclear spin qubits in silicon

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• Molecular spin qudits for quantum simulation of light-matter interactions
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• Hyperfine and quadrupole interactions for Dy isotopes in DyPc${}_2$ molecules
• Electronic control and switching of entangled spin state using anisotropy and exchange in the three-particle paradigm
• Mapping Spin Interactions from Conductance Peak Splitting in Coulomb Blockade
• Quantum Gates Between Mesoscopic Spin Ensembles
• Time-dependent spintronic anisotropy in magnetic molecules
• Acoustic analog to multiple avoided-crossings in two coupled acoustic cavities