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Related Concept Videos

Thermodynamic Systems01:06

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A thermodynamic system is a set of objects whose thermodynamic properties are of interest. The system is considered to be embedded in its surroundings or the environment. The system and its environment can exchange heat and do work on each other through a boundary that separates them. However, the immediate surroundings of the system interact with it directly and therefore have a much stronger influence on its behavior and properties.
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Maxwell's thermodynamic relations are very useful in solving problems in thermodynamics. Each of Maxwell's relations relates a partial differential between quantities that can be hard to measure experimentally to a partial differential between quantities that can be easily measured. These relations are a set of equations derivable from the symmetry of the second derivatives and the thermodynamic potentials.
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A thermodynamic process that occurs at constant temperature is called an isothermal process. Heat slowly flows into the system or out of the system to maintain thermal equilibrium. Processes involving phase changes like water evaporation into steam or freezing water into ice at a constant temperature are examples of Isothermal Processes.
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Shortcuts to Thermodynamic Quasistaticity.

Artur Soriani1, Eduardo Miranda1, Sebastian Deffner2

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This study introduces a new thermodynamic approach to control quantum systems, focusing on macrostates for robust strategies. This method enhances existing techniques and applies to complex systems like the quantum Ising chain.

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Area of Science:

  • Quantum Control
  • Thermodynamics
  • Many-Body Systems

Background:

  • Near-term quantum technologies need robust control strategies for complex many-body systems.
  • Shortcuts to adiabaticity are effective but often system-specific.
  • There is a need for approximate, broadly applicable control strategies.

Purpose of the Study:

  • To develop a new, broadly applicable control strategy inspired by thermodynamics.
  • To focus on system macrostates rather than microstates for robust quantum control.
  • To systematically improve existing shortcuts to adiabaticity.

Main Methods:

  • Inspired by thermodynamics, focusing on preserving the equation of state (macrostates).
  • Utilized adiabatic perturbation theory to derive systematic corrections.
  • Improved fast quasi-adiabatic driving and applied to the quantum Ising chain.

Main Results:

  • Developed a novel approach to quantum system control based on macrostate preservation.
  • Demonstrated improved performance over existing fast quasi-adiabatic driving.
  • Successfully applied the method to the quantum Ising chain in a transverse field.

Conclusions:

  • The proposed thermodynamic approach offers a robust and broadly applicable strategy for controlling complex quantum systems.
  • This method provides a systematic way to improve existing shortcuts to adiabaticity.
  • The findings are relevant for the development of near-term quantum technologies.