Journal
NPJ QUANTUM INFORMATION
Volume 6, Issue 1, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41534-020-00325-7
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Funding
- Fondazione CR Firenze through the project Q-BIOSCAN
- Fondazione CR Firenze through the project QUANTUM-AI, PATHOS EU H2020 FET-OPEN Grant [828946]
- UNIFI Grant Q-CODYCES
- MISTI Global Seed Funds MIT-FVG grant program
- H2020 Collaborative Project TEQ [766900]
- SFI-DfE Investigator Program through project QuNaNet [15/IA/2864]
- Leverhulme Trust through the Research Project Grant UltraQuTe [RGP-2018-266]
- Royal Society through the Wolfson Fellowship scheme [RSWF R3 183013]
- Royal Society through the International Exchange scheme [IEC R2 192220]
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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.
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