Observation of spin-electric transitions in a molecular exchange qubit
arXiv:2403.11214 · doi:10.1038/s41467-025-56453-1
Abstract
Electric fields represent an ideal means for controlling spins at the nanoscale and, more specifically, for manipulating protected degrees of freedom in multispin systems. Here we perform low-temperature magnetic far-IR spectroscopy on a molecular spin triangle (Fe3) and provide the first experimental evidence of spin-electric transitions in polynuclear complexes. The co-presence of electric- and magnetic-dipole transitions, allows us to estimate the spin-electric coupling. Based on spin Hamiltonian simulations of the spectra, we identify the observed transitions and introduce the concept of a generalized exchange qubit. This applies to a wide class of molecular spin triangles, and includes the scalar chirality and the partial spin sum qubits as special cases.
References in corpus (13)
- Universal Quantum Computation with the Exchange Interaction
- Semiconductor Spin Qubits
- Universal Fault-Tolerant Computation on Decoherence-Free Subspaces
- Butterfly hysteresis loop and dissipative spin reversal in the S=1/2, V15 molecular complex
- Spin-Electric Coupling in Molecular Magnets
- Electric field control of spins in molecular magnets
- Spin electric effects in molecular antiferromagnets
- Hyperfine-induced decoherence in triangular spin-cluster qubits
- Chirality of triangular antiferromagnetic clusters as a qubit
- Electric control of spin states in frustrated triangular molecular magnets
- A Multiferroic Molecular Magnetic Qubit
- Spin-electric Berry phase shift in triangular molecular magnets
- Non-collinear first-principles studies of the spin-electric coupling in frustrated triangular molecular magnets