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Time is curved, and quantum entanglement may be the key to its mysteries.
The quantum world has different laws than the classical one, which allows us to consider such phenomena as time travel. Recent research is a Gedankenexperiment (thought experiment), a term popularized by Einstein. Although no quantum particle has returned to the past, the proposed simulation involves "efficient time travel" due to a special way of interacting quantum particles.
This interaction is called quantum entanglement. Knowing the properties of one entangled particle, you can get information about the other, regardless of the distance between them. For example, a change in a quantum particle on Earth entangled with a nearby particle located near a black hole 10 billion light-years away may mean a change in the behavior of something in the distant past.
The study examines the possibility of closed time curves (CTCs) - hypothetical paths back in time. Stephen Hawking in 1992 suggested that the laws of physics do not allow CTC to exist, making time travel impossible. However, the authors of a recent study claim that closed time curves can be modeled using quantum teleportation circuits.
In the framework of Gedankenexperiment, physicists proposed the following model: they conduct quantum interaction, obtaining a certain measurable result. Based on this result, they can determine which input would lead to the optimal result. But since the result was obtained from a quantum operation, researchers can adjust the values of the quantum sample through entanglement, achieving a better result.
The team showed that it is possible to "probabilistically improve on your past choices," even though the proposed time travel simulation has not yet been performed. In their study, the clear effect of time travel will occur once in four times, which corresponds to a 75% failure rate. To solve this problem, the team suggests sending a large number of entangled photons.
David Arvidsson-Shukur, a quantum physicist at the University of Cambridge and the study's lead author, said:: "The experiment we are describing seems impossible to solve using standard (non-quantum) physics. So it seems that quantum entanglement can create situations that effectively look like time travel."
It is important to emphasize that the team describes a way to simulate time travel; the researchers did not conduct a time travel simulation in this experiment.
The quantum world has different laws than the classical one, which allows us to consider such phenomena as time travel. Recent research is a Gedankenexperiment (thought experiment), a term popularized by Einstein. Although no quantum particle has returned to the past, the proposed simulation involves "efficient time travel" due to a special way of interacting quantum particles.
This interaction is called quantum entanglement. Knowing the properties of one entangled particle, you can get information about the other, regardless of the distance between them. For example, a change in a quantum particle on Earth entangled with a nearby particle located near a black hole 10 billion light-years away may mean a change in the behavior of something in the distant past.
The study examines the possibility of closed time curves (CTCs) - hypothetical paths back in time. Stephen Hawking in 1992 suggested that the laws of physics do not allow CTC to exist, making time travel impossible. However, the authors of a recent study claim that closed time curves can be modeled using quantum teleportation circuits.
In the framework of Gedankenexperiment, physicists proposed the following model: they conduct quantum interaction, obtaining a certain measurable result. Based on this result, they can determine which input would lead to the optimal result. But since the result was obtained from a quantum operation, researchers can adjust the values of the quantum sample through entanglement, achieving a better result.
The team showed that it is possible to "probabilistically improve on your past choices," even though the proposed time travel simulation has not yet been performed. In their study, the clear effect of time travel will occur once in four times, which corresponds to a 75% failure rate. To solve this problem, the team suggests sending a large number of entangled photons.
David Arvidsson-Shukur, a quantum physicist at the University of Cambridge and the study's lead author, said:: "The experiment we are describing seems impossible to solve using standard (non-quantum) physics. So it seems that quantum entanglement can create situations that effectively look like time travel."
It is important to emphasize that the team describes a way to simulate time travel; the researchers did not conduct a time travel simulation in this experiment.
