Quantum Entanglement - properties

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SUMMARY

The discussion centers on the properties that can be entangled in quantum systems, specifically focusing on spin and polarization. Participants confirm that multiple properties, such as spin and momentum, can be entangled simultaneously. The ability to disentangle one property while retaining another is debated, with the consensus that the Schrödinger equation governs the entangled state at all times. Kenneth W. Ford's book '101 Quantum Questions' is referenced, emphasizing that nearly any observable of a particle can be entangled.

PREREQUISITES
  • Understanding of quantum mechanics principles
  • Familiarity with the Schrödinger equation
  • Knowledge of quantum entanglement concepts
  • Basic grasp of observable properties in quantum systems
NEXT STEPS
  • Research the implications of the Schrödinger equation on quantum states
  • Explore the concept of multi-property entanglement in quantum systems
  • Study the observable properties of particles as discussed in '101 Quantum Questions'
  • Investigate experimental methods for entangling and disentangling quantum properties
USEFUL FOR

Quantum physicists, researchers in quantum mechanics, and students studying advanced quantum theories will benefit from this discussion.

San K
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1. What properties (that we are aware of/discovered) can be entangled?

- spin, polarization etc

2. Can we entangled/disentangled additional properties (between a two photon pair) at any particular time?

for example can we have both spin and polarization entangled at same time?
- can we then disentangle one property...say spin but still keep polarization?
 
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I would always think even if it looks as though a quantum system has a definite value for one of its properties, that properties plus all its others are still entangled. This is due to the fact that the Schrödinger equation applies at all times to the quantum system, which describes the system as superposition of states.

This is further supported by the comment Kenneth W. Ford makes on page 203 of his book '101 Quantum Questions', published by Harvard University Press.
 
Just about any observable of a particle - and many of particle systems - can be entangled.

Yes, particles can be entangled on multiples bases simultaneously: spin and momentum are examples.
 

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