Experimental characterization of the energetics of quantum logic gates

• URL: http://arxiv.org/abs/2001.11924v2
• Date: Thu, 10 Jun 2021 08:39:34 GMT
• Title: Experimental characterization of the energetics of quantum logic gates
• Authors: Valeria Cimini, Stefano Gherardini, Marco Barbieri, Ilaria Gianani, Marco Sbroscia, Lorenzo Buffoni, Mauro Paternostro and Filippo Caruso
• Abstract summary: We experimentally reconstruct the statistics of energy and entropy fluctuations following the implementation of a controlled-unitary gate. Our work thus addresses the energetic cost of operating quantum circuits, a problem that is crucial for the grounding of the upcoming quantum technologies.
• Score: 7.915536524413252
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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 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.

Related papers

• How quantum and evolutionary algorithms can help each other: two examples [0.0]
  We investigate the potential of bio-inspired evolutionary algorithms for designing quantum circuits with specific goals. We test the robustness of quantum implementations of the cellular automata for different numbers of quantum gates. An evolutionary algorithm is employed to optimize circuits with respect to a fitness function defined with the Mayer-Wallach entanglement measure.
  arXiv  Detail & Related papers  (2024-08-01T10:36:38Z)
• Hysteresis and Self-Oscillations in an Artificial Memristive Quantum Neuron [79.16635054977068]
  We study an artificial neuron circuit containing a quantum memristor in the presence of relaxation and dephasing. We demonstrate that this physical principle enables hysteretic behavior of the current-voltage characteristics of the quantum device.
  arXiv  Detail & Related papers  (2024-05-01T16:47:23Z)
• Quantum data learning for quantum simulations in high-energy physics [55.41644538483948]
  We explore the applicability of quantum-data learning to practical problems in high-energy physics. We make use of ansatz based on quantum convolutional neural networks and numerically show that it is capable of recognizing quantum phases of ground states. The observation of non-trivial learning properties demonstrated in these benchmarks will motivate further exploration of the quantum-data learning architecture in high-energy physics.
  arXiv  Detail & Related papers  (2023-06-29T18:00:01Z)
• A vertical gate-defined double quantum dot in a strained germanium double quantum well [48.7576911714538]
  Gate-defined quantum dots in silicon-germanium heterostructures have become a compelling platform for quantum computation and simulation. We demonstrate the operation of a gate-defined vertical double quantum dot in a strained germanium double quantum well. We discuss challenges and opportunities and outline potential applications in quantum computing and quantum simulation.
  arXiv  Detail & Related papers  (2023-05-23T13:42:36Z)
• Quantum Ergotropy and Quantum Feedback Control [0.0]
  We study the energy extraction from and charging to a finite-dimensional quantum system by general quantum operations. We prove that the changes in energy induced by unital quantum operations are limited by the ergotropy/charging bound for unitary quantum operations.
  arXiv  Detail & Related papers  (2023-03-09T01:31:44Z)
• Universality of critical dynamics with finite entanglement [68.8204255655161]
  We study how low-energy dynamics of quantum systems near criticality are modified by finite entanglement. Our result establishes the precise role played by entanglement in time-dependent critical phenomena.
  arXiv  Detail & Related papers  (2023-01-23T19:23:54Z)
• From quantum speed limits to energy-efficient quantum gates [0.0]
  We show that this optimal control problem can be solved within the powerful framework of quantum speed limits. We derive state-independent lower bounds on the energetic cost, from which we find the universally optimal implementation of unitary quantum gates.
  arXiv  Detail & Related papers  (2022-02-03T20:42:20Z)
• The role of quantum coherence in energy fluctuations [0.0]
  We discuss the role of quantum coherence in the energy fluctuations of open quantum systems. We introduce a protocol to define the statistics of energy changes as a function of energy measurements performed only after the evolution of the initial state. We demonstrate our findings by running an experiment on the IBM Quantum Experience superconducting qubit platform.
  arXiv  Detail & Related papers  (2021-06-11T15:32:24Z)
• Experimental verification of fluctuation relations with a quantum computer [68.8204255655161]
  We use a quantum processor to experimentally validate a number of theoretical results in non-equilibrium quantum thermodynamics. Our experiments constitute the experimental basis for the understanding of the non-equilibrium energetics of quantum computation.
  arXiv  Detail & Related papers  (2021-06-08T14:16:12Z)
• Information Scrambling in Computationally Complex Quantum Circuits [56.22772134614514]
  We experimentally investigate the dynamics of quantum scrambling on a 53-qubit quantum processor. We show that while operator spreading is captured by an efficient classical model, operator entanglement requires exponentially scaled computational resources to simulate.
  arXiv  Detail & Related papers  (2021-01-21T22:18:49Z)
• The role of quantum coherence in energy fluctuations [0.0]
  We discuss the role of quantum coherence in the energy fluctuations of open quantum systems. We introduce an operational protocol to define the statistics of energy changes as a function of energy measurements performed only after its evolution. We illustrate our findings using a three-level quantum system in interaction with thermal reservoirs.
  arXiv  Detail & Related papers  (2020-06-11T05:36:05Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.