A perspective on scaling up quantum computation with molecular spins

Abstract

Artificial magnetic molecules can contribute to progressing towards large scale quantum computation by: a) integrating multiple quantum resources and b) reducing the computational costs of some applications. Chemical design, guided by theoretical proposals, allows embedding nontrivial quantum functionalities in each molecular unit, which then acts as a microscopic quantum processor able to encode error protected logical qubits or to implement quantum simulations. Scaling up even further requires 'wiring-up' multiple molecules. We discuss how to achieve this goal by the coupling to on-chip superconducting resonators. The potential advantages of this hybrid approach and the challenges that still lay ahead are critically reviewed.

arXiv comment9 pages, 4 figures

References in corpus (47)

• Quantum Computing in the NISQ era and beyond
• Supplementary information for "Quantum supremacy using a programmable superconducting processor"
• Quantum Computation with Quantum Dots
• Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
• Surface codes: Towards practical large-scale quantum computation
• Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
• The Physical Implementation of Quantum Computation
• Quantum Error Correction for Quantum Memories
• NMR Techniques for Quantum Control and Computation
• A single-atom electron spin qubit in silicon
• Will spin-relaxation times in molecular magnets permit quantum information processing?
• Validating quantum computers using randomized model circuits
• A simple all-microwave entangling gate for fixed-frequency superconducting qubits
• Multi-valued Logic Gates for Quantum Computation
• A four-qubit germanium quantum processor
• Molecular Spin Qudits for Quantum Algorithms
• Operating Quantum States in Single Magnetic Molecules: Implementation of Grover's Quantum Algorithm
• Demonstration of quantum error correction and universal gate set on a binomial bosonic logical qubit
• Reaching the quantum limit of sensitivity in electron spin resonance
• Qubit-oscillator dynamics in the dispersive regime: analytical theory beyond rotating-wave approximation
• Molecular prototypes for spin-based CNOT quantum gates
• Resource-efficient digital quantum simulation of $d$-level systems for photonic, vibrational, and spin-$s$ Hamiltonians
• Quantum computers as universal quantum simulators: state-of-art and perspectives
• Three addressable spin qubits in a molecular single-ion magnet
• Coherent manipulation of a molecular Ln-based nuclear qudit coupled to an electron qubit
• Electron Spin Resonance at the Level of 10000 Spins Using Low Impedance Superconducting Resonators
• A scalable architecture for quantum computation with molecular nanomagnets
• Electric field control of spins in molecular magnets
• Inductive-detection electron-spin resonance spectroscopy with $65$spins$/\sqrt{\text{Hz}}$ sensitivity
• Coupling single molecule magnets to quantum circuits
• Molecular nanomagnets as quantum simulators
• Nanomagnonic cavities for strong spin-magnon coupling
• Criteria for Exact Qudit Universality
• Toward scalable simulations of Lattice Gauge Theories on quantum computers
• Enhanced molecular spin-photon coupling at superconducting nanoconstrictions
• Electrical single spin read-out using an exchange-coupled quantum dot
• Photon Condensation and Enhanced Magnetism in Cavity QED
• Quantum Stabilizer Codes Embedding Qubits Into Qudits
• Nanometric constrictions in superconducting coplanar waveguide resonators
• Quantum-Information Processing with Hybrid Spin-Photon Qubit Encoding
• Chemical tuning of spin clock transitions in molecular monomers based on nuclear spin-free Ni(II)
• Digital quantum simulators in a scalable architecture of hybrid spin-photon qubits
• Variational Quantum Simulation of Ultrastrong Light-Matter Coupling
• Toward long-range entanglement between electrically driven single-molecule magnets
• A Clock Transition in the Cr${}_7$Mn Molecular Nanomagnet
• Quantum simulations under translational symmetry
• Possible hundredfold enhancement in the direct magnetic coupling of a single atomic spin to a circuit resonator

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• Universal qudit gate synthesis for transmons
• Proof-of-concept Quantum Simulator based on Molecular Spin Qudits
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• Molecular spin qudits for quantum simulation of light-matter interactions
• Counteracting dephasing in Molecular Nanomagnets by optimized qudit encodings
• Witnessing Entanglement and Quantum Correlations in Condensed Matter: A Review
• Fault-tolerant qubit encoding using a spin-7/2 qudit
• Dispersive readout of molecular spin qudits
• Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications
• Fault-Tolerant Computing with Single Qudit Encoding
• Toroidal magnetic molecules stripped to their basics
• Lanthanide molecular nanomagnets as probabilistic bits
• Towards Quantum Computing with Molecular Electronics
• Resonant Multilevel Amplitude Damping Channels
• How to cross an energy barrier at zero Kelvin without tunneling effect
• Multi-qudit interactions in molecular spins
• Emergence of Spinmerism for Molecular Spin-Qubits Generation
• Designing quantum error correction codes for practical spin qudit
• Dephasing-tolerant quantum sensing for transverse magnetic fields with spin qudits
• Quantum Information Processing with Molecular Nanomagnets: an introduction
• Multi-Valued Quantum Neurons
• Optimal Control of Spin Qudits Subject to Decoherence Using Amplitude-and-Frequency-Constrained Pulses
• Perspective on witnessing entanglement in hybrid quantum systems
• Time Crystals from single-molecule magnet arrays
• Studies of decoherence in strongly anisotropic spin triangles with toroidal or general non-collinear easy axes
• Multipartite Entanglement and Quantum Sensing in a Spin-5/2 Heisenberg Molecular Iron(III) Triangle
• Enhancing Coherence with a Clock Transition and Dynamical Decoupling in the Cr${}_7$Mn Molecular Nanomagnet
• Fault-Tolerant Encoding of Logical Qudits in Spin Systems
• Quantum Entanglement Generation in the Heterometallic Ni${}_4^{\text{2+}}$Gd${}_4^{\text{3+}}$ Complexes
• Floquet Engineering Clock Transitions in Magnetic Molecules