Quantum Entanglement - properties

[San K]

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?

 

[StevieTNZ]

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.

 

[DrChinese]

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.