You're right, the techniques in NMR like Rabi and Ramsey spectroscopy, spin echoes are all used in atomic clock experiments too.
After strontium atoms coming from an oven (usually at 400-ish degrees) reaches the main chamber, they're trapped via both optically (via lasers) and magnetically (there's coils surrounding the chamber), which we called…
There're problems with increasing atom number. It is true that more atoms will allow one to resolve QPN easier, more atoms make clock rotations (along the Bloch sphere) much harder, as for a spin-squeezed clock doing…
What the MIT group achieved was implementing spin-squeezing to clock operation, but their results are not QPN-limited (in fact, they made it above the SQL, so they actually make things worse instead of making it better)…
Yes, LIGO has already implemented squeezed states in their measurements. What I'm referring to is making a spin-squeezed atomic clock with enhanced metrological gain compared to QPN limit. There're several groups…
They are not mutually exclusive. There're groups that are developing portable atomic clocks, and then we have this group that are pushing the frontiers. While not in everyday devices, cesium/ rubidium clocks which are…
A simple way of thinking it is consider laser as waves, they act like harmonic potentials (like sine curves) with crests and troughs. Atoms that are inside the potentials are trapped, like a ball in a deep well. Atoms…
Yes, in fact, the current state-of-the-art atomic clocks are hitting a limit called the standard quantum limit (SQL) of the quantum projection noise (QPN). Basically, atomic clocks operate by probing atoms with an…
You're right, the techniques in NMR like Rabi and Ramsey spectroscopy, spin echoes are all used in atomic clock experiments too.
After strontium atoms coming from an oven (usually at 400-ish degrees) reaches the main chamber, they're trapped via both optically (via lasers) and magnetically (there's coils surrounding the chamber), which we called…
There're problems with increasing atom number. It is true that more atoms will allow one to resolve QPN easier, more atoms make clock rotations (along the Bloch sphere) much harder, as for a spin-squeezed clock doing…
What the MIT group achieved was implementing spin-squeezing to clock operation, but their results are not QPN-limited (in fact, they made it above the SQL, so they actually make things worse instead of making it better)…
Yes, LIGO has already implemented squeezed states in their measurements. What I'm referring to is making a spin-squeezed atomic clock with enhanced metrological gain compared to QPN limit. There're several groups…
They are not mutually exclusive. There're groups that are developing portable atomic clocks, and then we have this group that are pushing the frontiers. While not in everyday devices, cesium/ rubidium clocks which are…
A simple way of thinking it is consider laser as waves, they act like harmonic potentials (like sine curves) with crests and troughs. Atoms that are inside the potentials are trapped, like a ball in a deep well. Atoms…
Yes, in fact, the current state-of-the-art atomic clocks are hitting a limit called the standard quantum limit (SQL) of the quantum projection noise (QPN). Basically, atomic clocks operate by probing atoms with an…