A controlled quantum SWAP logic gate in a 4-center metal complex

Mohamed Hliwa (1, 2) , Jacques Bonvoisin (1, 3) , Christian Joachim (1, 3)

1 CEMES-GNS - Groupe NanoSciences
2 UH2MC - Université Hassan II [Casablanca]
3 International Center for Materials Nanoarchitectonics (MANA)

A monomolecular four center low spin paramagnetic organometallic complex is proposed and theoretically studied to work as a controlled quantum swap molecule logic gate. The magnetic super-exchange interaction between the 2 in-tramolecular qubits depends on the oxydation state of a third intermediate center itself controlled by an intervalence electron transfer process. A model system is build up using entangled spin qubits in the framework of an Heisenberg-Dirac-Van Vleck like spin Hamiltonian demonstrating the effective swapping operation of this complex.

Mots clés: Logic Gate; Ruthenium; SWAP

Domaines: Chimie théorique et/ou physique; Chimie de coordination

Mohamed Hliwa, Jacques Bonvoisin, Christian Joachim. A controlled quantum SWAP logic gate in a 4-center metal complex. Nicolas Lorente, Christian Joachim. Architecture and Design of Molecule Logic Gates and Atom Circuits, Springer, pp.237-247, 2012, Advances in Atom and Single Molecule Machines, 978-3-642-33137-4. ⟨10.1007/978-3-642-33137-4_18⟩. ⟨hal-01737292⟩