Quantum Teleportation / Beam Splitters

In summary, the conversation discusses the teleportation of a state of a photon K to photon E2 when K is at a 45 degree angle. The photons E1 and E2 are entangled and if E2 is at 45 degrees, then E1 is at 135 degrees. The conversation also raises questions about whether using a PBS would yield the same result and if the experiment would work if photon K was polarized differently. There is also a discussion about using a wave plate and PBS to measure polarizations along different bases.
  • #1
StevieTNZ
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In regards to this image - http://img.photobucket.com/albums/v608/steviet/image2.jpg:

(a) when K is 45 degrees, when K reflects and E1 reflects, or K transmits and E1 transmits - the state of K gets teleported to E2.
Photons E1 and E2 are entangled as |HV>-|VH>. Therefore if E2 is 45, then E1 is 135.

Would the above result be the same if instead we use a PBS?

(b) Perhaps would the teleportation experiment work if photon K was H polarised (or V polarised)? But then it would be a matter of a H polarised photon always transmitting, and ½ probability of E1 transmitting? Not sure if teleportation would work in that instance. Then if E2 acquired H polarisation, then E1 would be V polarised – and I’m not sure whether things would need to be backward compatible: K transmitting (being H), E1 reflecting (if it becomes V polarised).


In regards to this image - http://img.photobucket.com/albums/v608/steviet/scan0001.jpg

I was wondering whether what I have in the image is correct? Or for the 2nd BS image, sending the photon on that angle the reflected photon is H (rather than V)?

And if you send that reflected (or transmitted) photon to the wave plate then measure with a PBS, which one - of V or H – would we get to indicate 45 or 135 polarisation?

Is it possible to rotate a PBS to measure along other bases rather than just H/V, or rotating the PBS still measures only in H/V (rather than 45/135)?
 
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  • #2
@StevieTNZ did you find any more insight on this topic?
 

1. What is quantum teleportation?

Quantum teleportation is a process in which the exact state of a quantum system can be transported (or "teleported") from one location to another, without physically moving the system itself.

2. How does quantum teleportation work?

Quantum teleportation involves the use of entangled particles and quantum measurement to transfer the state of one particle (the "sender") to another particle (the "receiver"). This is achieved through a combination of classical communication and manipulation of the quantum states of the particles.

3. What is a beam splitter in quantum teleportation?

A beam splitter is a device that can divide a beam of light into two separate beams, allowing for the manipulation and control of the properties of the light. In quantum teleportation, beam splitters are used to create entangled particles and to manipulate the quantum states of the sender and receiver particles.

4. How is quantum teleportation different from traditional teleportation?

Traditional teleportation involves the instantaneous transportation of matter from one location to another. Quantum teleportation, on the other hand, involves the transfer of the exact state of a quantum system. This means that while traditional teleportation may be possible in theory, quantum teleportation is currently the only form of teleportation that has been experimentally demonstrated.

5. What are the potential applications of quantum teleportation?

Quantum teleportation has potential applications in quantum computing, secure communication, and quantum cryptography. It can also aid in the development of advanced technologies such as quantum sensors and quantum networks.

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