All Questions
7 questions
17
votes
3
answers
12k
views
Is it possible for more than two particles to be entangled in a quantum way?
So I know that two particles can be entangled in a quantum way, but is it possible that more than two particles be entangled in a quantum way? Most descriptions provide with two-particles cases, so I ...
- 695
27
votes
5
answers
7k
views
How does QFT help with entanglement?
I'm a bit confused. QFT is claimed to incorporate both Quantum Mechanics and Special Relativity. Therefore it should address the problem of non-locality caused by entanglement. However when I search ...
- 539
18
votes
1
answer
2k
views
Why are there so many different measures of entanglement?
I have seen various articles (e.g. Introduction to Entanglement Measures) discuss the various entanglement measures that exist. These include: concurrence, entanglement cost, distillable entanglement,...
- 321
4
votes
3
answers
485
views
Are photons locked in time, and does this explain the "delayed choice quantum eraser" experiment?
I'm trying to wrap my head around the "Delayed Choice Quantum Eraser" experiment and how events in the future affect light in the past.
I'm sure I'm wrong but to me this seems to indicate that ...
- 395
3
votes
2
answers
945
views
Quantum entanglement definition [closed]
How can we define Quantum entanglement (in QFT)?
What are the known mathematical settings and special physical (or logical) conditions of QE applied to Quantum computing?
- 113
3
votes
1
answer
432
views
What happens to the vacuum when entanglement is harvested?
I stumbled upon this website which talks about entanglement harvesting. I also already asked a question on this subject regarding some experimental question. In this post I want to ask another ...
- 1,518
1
vote
1
answer
296
views
How can anything be unentangled?
If the universe is made of fields that exist everywhere, won’t every point in the universe become entangled with those around it, expanding out at the speed of light? How could two systems nearby one ...
- 749