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This research demonstrates precise control over the quantum Mpemba effect in graphene nanotorus qubits by manipulating initial state preparation methods. By comparing bare Gibbs initialization with driven steady-state techniques, the team revealed how specific setup strategies can suppress anomalous relaxation and optimize energy dissipation rates. These findings offer new pathways for engineering faster cooling protocols and refining thermal management in solid-state quantum processors.

Surse care acoperăQuantum Zeitgeist, Quantum Computing Report, arXiv

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Cariri Team Controls Quantum Relaxation Via Initial State Setup

Quantum Zeitgeist24 septembrie 20264 min de cititArticolul și perspectiva sunt în engleză.

A system heated to a higher temperature can sometimes cool faster than one starting colder, an effect now demonstrated with surprising precision in a nanoscale material. Bare Gibbs initialisation of a graphene nanotorus qubit yielded broad regions of strong anomalous relaxation, approaching an integrated Mpemba parameter of unity. However, employing driven steady-state preparation almost completely suppressed this counterintuitive behaviour, revealing new avenues for manipulating energy dissipation within qubits.

State preparation influences the speed of quantum relaxation beyond defining an initial condition. Preparing a graphene nanotorus qubit using different methods sharply alters its ability to exhibit the quantum Mpemba effect; this counterintuitive phenomenon occurs when a system further from equilibrium relaxes faster than one closer. The way a quantum bit, specifically one built from specially shaped carbon structures called graphene nanotorus qubits, is initially prepared dramatically…

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