Experimental characterization of the energetics of quantum logic gates
Valeria Cimini, Stefano Gherardini, Marco Barbieri, Ilaria Gianani, Marco Sbroscia, Lorenzo Buffoni, Mauro Paternostro, Filippo Caruso
Abstract
Abstract We characterize the energetic footprint of a two-qubit quantum gate from the perspective of non-equilibrium quantum thermodynamics. We experimentally reconstruct the statistics of energy and entropy fluctuations following the implementation of a controlled-unitary gate, linking them to the performance of the gate itself and the phenomenology of Landauer’s principle at the single-quantum level. Our work thus addresses the energetic cost of operating quantum circuits, a problem that is crucial for the grounding of the upcoming quantum technologies.
Topics & Concepts
Quantum computerQuantum circuitQuantum thermodynamicsQuantumQuantum gateUnitary stateQubitPhysicsQuantum logicQuantum mechanicsStatistical physicsQuantum error correctionQuantum technologyOpen quantum systemComputer sciencePolitical scienceLawAdvanced Thermodynamics and Statistical MechanicsQuantum Computing Algorithms and ArchitectureQuantum Information and Cryptography