Related Experiment Video
Updated: Aug 1, 2026
09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Cooperating or fighting with decoherence in the optimal control of quantum dynamics
1Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA.
The Journal of Chemical Physics
|May 6, 2006
Summary
Laboratory closed-loop learning control can fight or cooperate with quantum decoherence. This quantum control strategy optimizes dynamics by either actively combating or strategically using environmental interactions for efficient population transfer.
Area of Science:
- Quantum dynamics and control
- Quantum information science
- Open quantum systems
Background:
- Quantum systems are susceptible to decoherence, which degrades quantum information.
- Optimal manipulation of quantum dynamics is crucial for quantum technologies.
- Understanding the interplay between control fields and environmental interactions is essential.
Purpose of the Study:
- To explore laboratory closed-loop learning control for quantum dynamics.
- To investigate strategies for fighting or cooperating with decoherence.
- To optimize population transfer in multilevel quantum systems.
Main Methods:
- Simulations using a Lindblad formulation for multilevel quantum systems.
- Analysis of systems strongly interacting with the environment.
- Application of closed-loop learning control strategies.
Main Results:
- Control fields can be found to effectively fight decoherence for high control yield.
- Optimally shaped fields can cooperate with decoherence for efficient modest control yields.
- A theoretical foundation is established for control field and decoherence cooperation in weak regimes.
Conclusions:
- Closed-loop learning control offers effective strategies for managing decoherence.
- Population transfer objectives can be met by either fighting or cooperating with environmental interactions.
- The findings provide insights into optimizing quantum dynamics under environmental influence.
Related Concept Videos
02:45The Quantum-Mechanical Model of an Atom
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra. Schrödinger...
01:58Cooperative Allosteric Transitions
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
01:58Cooperative Allosteric Transitions
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
01:58Cooperative Allosteric Transitions
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
01:12Classical Mechanics
Classical mechanics provides a mathematical description of the motion of bodies under the influence of forces. A key principle within this field is the work-energy theorem, which establishes a bridge between the net work done on an object and its kinetic energy.The work-energy theorem states that the net work done on a particle by all the forces acting on it equals the change in its kinetic energy.In simple terms, the work-energy theorem is a method to analyze the effects of forces on an...
01:14Conservation of Energy in Control Volume
Consider a turbine operating under steady-flow conditions. The control volume is drawn around the turbine, with fluid entering at one point and exiting at another. The turbine extracts energy from the fluid, which performs mechanical work (shaft work).
For steady flow systems, the time derivative of the stored energy becomes zero since there is no energy accumulation within the control volume. This simplifies the energy equation to:
For steady flow systems, the time derivative of the stored energy becomes zero since there is no energy accumulation within the control volume. This simplifies the energy equation to: