Laser-induced classical and quantum logic functionality in a molecular homodinuclear vanadium Prussian blue analogue
Phys. Rev. B 112, 054427 – Published 11 August, 2025
DOI: https://doi.org/10.1103/4dd2-xbcl
Abstract
By employing high-level quantum chemistry methods, we investigate the electronic and magnetic properties of the vanadium-vanadium (V-V) molecular Prussian blue analogue (PBA), and mainly explore the potential logic functionality based on the achieved laser-induced ultrafast spin dynamics. The results show that, with the appropriate definition of the bit information and suitable combinations of the dynamic processes, a series of logic gates (including single-bit quantum logic gates, fundamental classical logic gates and multi-bit ones) and combinational functionalities can be constructed. Notably, the proposed T gate makes a critical step towards the more general one that can be used as a complement to the Clifford gate set for universal quantum computation. The complete mappings between three-bit inputs and three-bit outputs enable the construction of any specific three-bit logic gate (which can be downward compatible into two-bit logic gate) possible. The full-adder circuit is also obtained. All these results indicate the great potential of the V-V molecular PBA structure in both classical and quantum logic functionality and, at the same time, provide novel ideas for the design and realization of molecular logic functions towards quantum information processing and spintronics applications.
