Three addressable spin qubits in a molecular single-ion magnet

Abstract

We show that several qubits can be integrated in a single magnetic ion, using its internal electronic spin states with energies tuned by a suitably chosen molecular environment. This approach is illustrated with a nearly-isotropic Gd(III) ion entrapped in a polyoxometalate molecule. Experiments with microwave technologies, either three dimensional cavities or quantum superconducting circuits, show that this magnetic molecule possesses the number of spin states and the set of coherently addressable transitions connecting these states that are needed to perform a universal three-qubit processor or, equivalently, a d=8-level 'qudit'. Our findings open prospects for developing more sophisticated magnetic molecules which can result in more powerful and noise resilient quantum computation schemes.

arXiv comment5 pages, 4 figures

References in corpus (26)

• Elementary gates for quantum computation
• Quantum Computing in Molecular Magnets
• A single-atom electron spin qubit in silicon
• Will spin-relaxation times in molecular magnets permit quantum information processing?
• A simple test for hidden variables in spin-1 system
• Theory of the spin bath
• Molecular engineering of antiferromagnetic rings for quantum computation
• Experimental non-classicality of an indivisible quantum system
• Rare-earth solid-state qubits
• Direct Observation of Quantum Coherence in Single-Molecule Magnets
• Molecular prototypes for spin-based CNOT quantum gates
• Single qudit realization of the Deutsch algorithm using superconducting many-level quantum circuits
• A scalable architecture for quantum computation with molecular nanomagnets
• Pair-wise decoherence in coupled spin qubit networks
• Coupling single molecule magnets to quantum circuits
• Multilevel superconducting circuits as two-qubit systems: Operations, state preparation, and entropic inequalities
• Coherent manipulation of spin qubits based on polyoxometalates: the case of the single ion magnet [GdW${}_{30}$P${}_5$O${}_{110}$]${}^{12-}$
• Minimal qudit code for a qubit in the phase-damping channel
• Quantum simulations and experiments on Rabi oscillations of spin qubits: intrinsic {\sl vs} extrinsic damping
• Magnetic dipolar ordering and quantum phase transition in Fe8 molecular magnet
• Spin-Orbit Qubits of Rare-Earth-Metal Ions in Axially Symmetric Crystal Fields
• Nanometric constrictions in superconducting coplanar waveguide resonators
• Decay of Rabi oscillations induced by magnetic dipole interactions in diluted paramagnetic solids
• Quantum interference oscillations of the superparamagnetic blocking in an Fe8 molecular nanomagnet
• Quantum Error Correction with magnetic molecules
• Teleportation in an indivisible quantum system

Cited by in corpus (26)

• Role of vibrations on decoherence in molecular spin qubits: The case of [Cu(mnt)${}_2$]${}^{2-}$
• Coherent manipulation of a molecular Ln-based nuclear qudit coupled to an electron qubit
• A perspective on scaling up quantum computation with molecular spins
• Observation of Cooperative Electronic Quantum Tunneling: Increasing Accessible Nuclear States in a Molecular Qudit
• Quantum phase interference in a fullerene-based molecular qutrit
• Generalized Ramsey Interferometry Explored with a Single Nuclear Spin Qudit
• Multidimensional Fourier series with quantum circuits
• Thermal transistor effect in quantum systems
• Noisy Qudit vs Multiple Qubits : Conditions on Gate Efficiency for Enhancing Fidelity
• Dispersive readout of molecular spin qudits
• Fault-Tolerant Computing with Single Qudit Encoding
• Theoretical evaluation of [V${}^{IV}$(α-C${}_3$S${}_5$)]${}^2-$ as nuclear-spin sensitive single-molecule spin transistor
• Machine Learning-Assisted Manipulation and Readout of Molecular Spin Qubits
• Electrical two-qubit gates within a pair of clock-qubit magnetic molecules
• Realization of Universal Quantum Gates with Spin-Qudits in Colloidal Quantum Dots
• How to cross an energy barrier at zero Kelvin without tunneling effect
• Direct electrical access to the spin manifolds of individual monovalent lanthanide atoms
• Multi-qudit interactions in molecular spins
• On-Chip Detection of Electronuclear Transitions in the ${}^{155,157}$Gd Multilevel Spin System
• Dephasing-tolerant quantum sensing for transverse magnetic fields with spin qudits
• Order-of-Magnitude SNR Improvement for High-Field EPR Spectrometers via 3D-Printed Quasioptical Sample Holders
• Multi-Valued Quantum Neurons
• Optimal Control of Spin Qudits Subject to Decoherence Using Amplitude-and-Frequency-Constrained Pulses
• High cooperativity coupling to nuclear spins on a circuit QED architecture
• Quantum Gates Between Mesoscopic Spin Ensembles
• Peptides as versatile scaffolds for quantum computing