Near-flawless quantum teleportation demonstrated in groundbreaking experiment

[bonami2]

  Quote

In their experiment, the researchers used photons (particles of light) to encode the qubits, with the polarization of the photons representing the quantum states and their frequencies acting as the local environments. They carefully engineered the initial correlations between the photons’ polarization and frequency to create this multipartite hybrid-entangled state.

The process works as follows: the sender subjects their photon to controlled dephasing, which cancels out the initial correlations. They then perform a joint measurement on their part of the entangled pair and the qubit to be teleported. This measurement not only entangles the sender’s qubits but also remotely transforms the hybrid entanglement into local qubit-environment entanglement on the receiver’s side. Finally, the receiver applies a specific operation based on the sender’s measurement result and subjects their photon to dephasing, which remarkably converts the qubit-environment entanglement into the desired quantum state.

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Near-flawless quantum teleportation demonstrated in groundbreaking experiment -

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Scientists have successfully conducted near-perfect quantum teleportation despite the presence of noise that typically disrupts the...

 

Edited May 5, 2024 by bonami2

[UltraMega]

Interesting news, tho the terminology around this stuff seems to have evolved to be a little more misleading since the last time I read up on any of this in a serious way. 

 

As I understand it, the term quantum teleportation is actually just sending information via entanglement, which is something that we weren't sure was possible a decade or so ago. Nothing is actually being teleported, but information can be sent from on entangled atom, or in this case a photon, to another via entangled qbits. This new method seems to refine the process so that is is more reliable. That said, entanglement can only send info at the speed of light so it's not a method of overcoming the light speed barrier which makes it's practical applications pretty limited. 

[bonami2]

  On 05/05/2024 at 15:20, UltraMega said:

Interesting news, tho the terminology around this stuff seems to have evolved to be a little more misleading since the last time I read up on any of this in a serious way. 

 

As I understand it, the term quantum teleportation is actually just sending information via entanglement, which is something that we weren't sure was possible a decade or so ago. Nothing is actually being teleported, but information can be sent from on entangled atom, or in this case a photon, to another via entangled qbits. This new method seems to refine the process so that is is more reliable. That said, entanglement can only send info at the speed of light so it's not a method of overcoming the light speed barrier which makes it's practical applications pretty limited. 

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Thank for the definition. It pretty misleading and hard to understand. Tried to make the post as clear as possible but even the multiple source are all misleading. 

[GanjaSMK]

There's a lot of very interesting news happening in the scientific communities as of late. Especially in the advanced technology areas. 

[Sir Beregond]

Time for a good old fashioned "does the Star Trek transporter kill you and make a copy?" debate. 

 

Here's a Riker troll face.

 

[EHW Ai]

...more reliable?

 

Careful. Unless the process can be made truly bug free,  use of the words "teleportation" and "entanglement" in the same post might raise the hair on some people's skin.
-- B. H. Palms, 2024.

 

 

 

Edited May 6, 2024 by iamjanco

[The Pook]

[UltraMega]

  On 06/05/2024 at 17:18, Sir Beregond said:

Time for a good old fashioned "does the Star Trek transporter kill you and make a copy?" debate. 

 

Here's a Riker troll face.

 

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In this context, it definitely kills you. 

 

Not just that, but since only data is transferred, and only at the speed of light, a pretty large "transporter buffer" would need to be in effect to compensate for the data transfer time. The receiver transporter would need to have access to all the constituent matter to reassemble a person, not just based on instant entanglements, but also the transporter buffers ability to cache the data. 

 

[EHW Ai]

hmmm... ↑

 

 

  Reveal hidden contents

...just in case you missed it:

 

 

Edited May 7, 2024 by iamjanco