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Qmechanic ♦
Qmechanic ♦
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entanglement Entanglement distance and quantum mechanics length scales

In this answer https://physics.stackexchange.com/a/9253/256311, the author said

Usually, we think of quantum mechanics to govern the microscopic world, involving length scales of under a micrometer, i.e. 10^−6 𝑚  . Achieving quantum effects on a length scale of 100𝑘𝑚=10^5𝑚 means means you span 11 orders of magnitude

My question is: Why do we care about the quantum mechanics scale? Say, two far-seperatedseparated electrons approximately localized at $x$ and $y$, in system A and B, respectively. We care about how one electron entangle with another electron. Wow does length scale in each system matter? No matter how things going in System A, it has nothing to do with the distance between two systems.

entanglement distance and quantum mechanics length scales

In this answer https://physics.stackexchange.com/a/9253/256311, the author said

Usually, we think of quantum mechanics to govern the microscopic world, involving length scales of under a micrometer, i.e. 10^−6 𝑚  . Achieving quantum effects on a length scale of 100𝑘𝑚=10^5𝑚 means you span 11 orders of magnitude

My question is: Why do we care about the quantum mechanics scale? Say, two far-seperated electrons approximately localized at $x$ and $y$, in system A and B, respectively. We care about how one electron entangle with another electron. Wow does length scale in each system matter? No matter how things going in System A, it has nothing to do with the distance between two systems.

Entanglement distance and quantum mechanics length scales

In this answer https://physics.stackexchange.com/a/9253/256311, the author said

Usually, we think of quantum mechanics to govern the microscopic world, involving length scales of under a micrometer, i.e. 10^−6 𝑚. Achieving quantum effects on a length scale of 100𝑘𝑚=10^5𝑚 means you span 11 orders of magnitude

My question is: Why do we care about the quantum mechanics scale? Say, two far-separated electrons approximately localized at $x$ and $y$, in system A and B, respectively. We care about how one electron entangle with another electron. Wow does length scale in each system matter? No matter how things going in System A, it has nothing to do with the distance between two systems.

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Nicole
Nicole
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entanglement distance and quantum mechanics length scales

In this answer https://physics.stackexchange.com/a/9253/256311, the author said

Usually, we think of quantum mechanics to govern the microscopic world, involving length scales of under a micrometer, i.e. 10^−6 𝑚 . Achieving quantum effects on a length scale of 100𝑘𝑚=10^5𝑚 means you span 11 orders of magnitude

My question is: Why do we care about the quantum mechanics scale? Say, two far-seperated electrons approximately localized at $x$ and $y$, in system A and B, respectively. We care about how one electron entangle with another electron. Wow does length scale in each system matter? No matter how things going in System A, it has nothing to do with the distance between two systems.