Cooperative quantum information erasure

Abstract

We demonstrate an information erasure protocol that resets $N$ qubits at once. The method displays exceptional performances in terms of energy cost (it operates nearly at Landauer energy cost $kT\ln 2$), time duration ($\sim \mu s$) and erasure success rate ($\sim 99,9\%$). The method departs from the standard algorithmic cooling paradigm by exploiting cooperative effects associated to the mechanism of spontaneous symmetry breaking which are amplified by quantum tunnelling phenomena. Such cooperative quantum erasure protocol is experimentally demonstrated on a commercial quantum annealer and could be readily applied in next generation hybrid gate-based/quantum-annealing quantum computers, for fast, effective, and energy efficient initialisation of quantum processing units.

arXiv comment8 pages, 5 figures

References in corpus (14)

• Quantum Computing in the NISQ era and beyond
• Entropy production as correlation between system and reservoir
• Estimation of effective temperatures in quantum annealers for sampling applications: A case study with possible applications in deep learning
• Quantum technologies need a Quantum Energy Initiative
• Finite-time Landauer principle
• Experimental implementation of heat-bath algorithmic cooling using solid-state nuclear magnetic resonance
• Optimal purification of single qubits
• Erasure without work in an asymmetric, double-well potential
• Direct measurement of nonequilibrium system entropy is consistent with Gibbs-Shannon form
• Information and thermodynamics: Experimental verification of Landauer's erasure principle
• Detailed Jarzynski Equality applied on a Logically Irreversible Procedure
• Limitations in quantum computing from resource constraints
• Nonequilibrium thermodynamics of erasure with superconducting flux logic
• Spontaneous fluctuation-symmetry breaking and the Landauer principle

Cited by in corpus (11)

• Collective advantages in finite-time thermodynamics
• Energy-Consumption Advantage of Quantum Computation
• Key Issues Review: Useful autonomous quantum machines
• Geometrical optimization of spin clusters for the preservation of quantum coherence
• Quantum Coding with Finite Thermodynamic Resources
• Charging a quantum spin network towards Heisenberg-limited precision
• Generalized Landauer bound from absolute irreversibility
• Topological Defects from Quantum Reset Dynamics
• Minimizing Dissipation via Interacting Environments: Quadratic Convergence to Landauer Bound
• Optimally Fast Qubit Reset
• Nonequilibrium thermometry via an ensemble of initially correlated qubits