Timeline for Why is the Standard Quantum Limit (SQL) in Interferometers added as that of mass $m$ and not $2m$?
Current License: CC BY-SA 4.0
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| Apr 12, 2019 at 10:59 | history | edited | lAPPYc | CC BY-SA 4.0 |
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| Apr 12, 2019 at 10:45 | comment | added | lAPPYc | I was speaking of the Michelson Interferometer, where the light is incident at 90 degrees, and not Mach-Zehdner Interferometer. Not sure if this is relevant though, since the two Interferometers are supposed to be mathematically equivalent. | |
| Apr 12, 2019 at 8:08 | comment | added | patta | The only reason I can imagine for the disappearance of your 2 is entanglement of the two mirrors, as their relative position is measure by a single in-phase photon | |
| Apr 12, 2019 at 7:56 | comment | added | patta | I tried to figure out but didn't manage. A new issue that come out: the light on mirrors is incident at 45 deg (changes its path of 90 deg). Thus a back-and-forth uncertainty in mirror position of $\delta$ will bring an uncertainty in light path of $\sqrt{2}\delta$. Another 2 factor! | |
| Apr 12, 2019 at 7:03 | history | edited | Qmechanic♦ | CC BY-SA 4.0 |
added 2 characters in body; edited tags; edited title
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| Apr 12, 2019 at 3:19 | history | asked | lAPPYc | CC BY-SA 4.0 |