understanding 1. single photon and 2. entanglement ........states(adsbygoogle = window.adsbygoogle || []).push({});

a photon spin

is not know till we measure it.

once we measure it we get some value (L or R, V or H etc)?

does this value change if we were to measure it again after a few seconds? (assuming no interaction in-between)?

now we move to entangled pairas a single system

is not know till we measure it.

can we measure the spin of the single (two-photon) system? how?

literature says entanglement can be measured, purified, teleported etc. what properties of entanglement can be measured?

does this value change if we were to measure it again after a few seconds? (assuming no interaction in-between)?

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# Understanding 1. single photon and 2. entanglement states

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