Quantum Entanglement on Cosmological Scale

Quantum entanglement is popularly believed to give rise to spooky action at a distance of a kind that Einstein decisively rejected. Indeed, important recent experiments on systems assigned entangled states have been claimed to refute Einstein by exhibiting such spooky action. After reviewing two considerations in favor of this view I argue that quantum theory can be used to explain puzzling correlations correctly predicted by assignment of entangled quantum states with no such instantaneous action at a distance. We owe both considerations in favor of the view to arguments of John Bell. I present simplified forms of these arguments as well as a game that provides insight into the situation. The argument I give in response turns on a prescriptive view of quantum states that differs both from Dirac’s (as stated in Chapter 2) and Einstein’s.

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Development and application of Quantum Entanglement inspired Particle Swarm Optimization

Knowledge-Based Systems ◽

10.1016/j.knosys.2021.106859 ◽

2021 ◽

Vol 219 ◽

pp. 106859

Author(s):

Rujuta Vaze ◽

Nagraj Deshmukh ◽

Rajesh Kumar ◽

Akash Saxena

Keyword(s):

Particle Swarm Optimization ◽

Quantum Entanglement ◽

Particle Swarm ◽

Swarm Optimization

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Improving cold-atom sensors with quantum entanglement: Prospects and challenges

Applied Physics Letters ◽

10.1063/5.0050235 ◽

2021 ◽

Vol 118 (14) ◽

pp. 140501

Author(s):

Stuart S. Szigeti ◽

Onur Hosten ◽

Simon A. Haine

Keyword(s):

Quantum Entanglement ◽

Cold Atom

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How to Erase Quantum Monogamy?

Quantum Reports ◽

10.3390/quantum3010004 ◽

2021 ◽

Vol 3 (1) ◽

pp. 53-67

Author(s):

Ghenadie Mardari

Keyword(s):

Quantum System ◽

Quantum Entanglement ◽

The Other ◽

Arrow Of Time ◽

Quantum Level ◽

Delayed Choice ◽

Other Hand ◽

The One ◽

Quantum Erasure ◽

Non Locality

The phenomenon of quantum erasure exposed a remarkable ambiguity in the interpretation of quantum entanglement. On the one hand, the data is compatible with the possibility of arrow-of-time violations. On the other hand, it is also possible that temporal non-locality is an artifact of post-selection. Twenty years later, this problem can be solved with a quantum monogamy experiment, in which four entangled quanta are measured in a delayed-choice arrangement. If Bell violations can be recovered from a “monogamous” quantum system, then the arrow of time is obeyed at the quantum level.

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