How Do Wave Plates Influence Photon Entanglement and Measurement?

StevieTNZ
Messages
1,934
Reaction score
873
If we produce a three-pair of entangled photons, and send two of them towards polarising beam splitters, and one towards a vertically aligned wave plate - according to QM we need to describe the photon as being in a superposition of V and H when they hit the beam splitters, but when the photon hits the wave plate - is that the one that makes the measurement, and we'll find that the V polarised photon of the entangled photons coming from the wave plate (the others taking on H polarisations). In comparison, if collapse occurred at either of the polarisers (perhaps delaying the time the photon reaches the wave plate), we might see a V polarised photon at one of the beam splitters?
 
Physics news on Phys.org

Thread 'Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
View full post »

Thread 'Quantum behaviour of an electron around a positively charged sphere'

If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
View full post »

Similar threads

B Calculating Photon Polarization States with PBS & Wave Plates
Replies
3
Views
2K
A What happens when entangled photons are split into different paths?
Replies
41
Views
5K
I Using a single particle as quantum computer
Replies
8
Views
843
I Tips on generating entangled photon pair with SPDC entanglement source
Replies
1
Views
2K
B Beginner Question Regarding Entanglement
Replies
19
Views
2K
B The setup of "2012 entanglement between photons that (....)"
Replies
25
Views
2K
I Is this a valid quantum Cheshire cat?
Replies
13
Views
2K
I Understanding Entanglement and Born's Rule in Photon Polarization Experiments
Replies
13
Views
2K
A Is delayed choice remote entanglement of photons derived from TDSE?
2
Replies
58
Views
4K
I How Would Afshar's Experiment Affect Entanglement?
Replies
2
Views
1K

Hot Threads

Recent Insights

Back
Top