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I'd like to talk about.

So here, I will talk about so-called testal♥-quantum steps.

literally, the previous

There are devices that can...

reach to step quantum targets

and they can木

reached the standard quantum limit, we can have enough ability

to prepare thatwheatulating update and prepare for theretching

And then we said that

than we can demonstrate the quantum mechanical behavior of test mass

Again the idea is

for random reading out of the optimum light field

were able to infer the test mass of one of the states

And then from further measurements we can study the quantum dynamics, the characterized

quantum state.

Right?

Okay, so then today I will mention that suppose now that the microscopic test analysis that

we have is a new kind of quantum system, what can we do in terms of testing the unitary

evolution in this quantum mechanics and what we do in terms of thinking about the

virtual in this new context. Okay, so let me acknowledge my collaborators because some of

these are ongoing research. These are Rana, Basam, Palinda, Nick and Chris, the context.

And then at ANU, we are talking about common Craig-Savage and Brown. So basically I will

mention that there are experiments at ANU that could be relevant for testing quantum

mechanics. And there's also Jun Guo and Xian Ji here at the Bajun University of Science

and Technology and they have moved to this new university. And there is Juan, Kai-Hsin

and Jun who are also collaborators who work on the theory of this problem. So the idea

is, okay, as I mentioned, there are all of these mechanical systems from different scales

and they have very good sensitivity for measuring force in the respective regime that they're

in. But today I will motivate a new kind of experiment that adds into the picture in the

previous slide but is towards the more massive side of this. And this was motivated from

trying to detect gravitational waves on the ESR Earth at very low frequencies. It is not

clear that, yeah, I don't want to say anything discouraging, but the idea is that if you

think about very low frequency mechanical ideal frequency achieved, you want to do that

with a torsional pendulum. A torsional pendulum is one where instead of this wire doing an

object going like this, you actually have a fiber suspending something which, when it

twists, the center of gravity will raise a little bit and then therefore the restoring

force, the spring constant for the motion can be much much less. And they need to have

these ideal frequencies very low. And this torsional bar detector was basically proposed

by Andal and others. And they have this torsional pendulum, have this bar which is suspended

from wires, and then they aim at, and then the most of the gravitational waves would

sort of tilt, what is the word, like rotate these guys in opposite ways. So therefore

you have federal chemistry detecting the distance between here, well, I guess chemistry reading

out the displacement of these ends, you can actually have readouts for this torsional

pendulum. And the proposal, their vision is that you can have some detector sensitivity

that is in between the Ligel and Virgil and the ground based detectors and the space based

detectors. I think these are different versions. This is one of the proposals for aluminum

in space and this is one of the space based future detectors which measures intermediate

frequency. So this is not as ambitious as all of these, but they claim that maybe this

is possible with the technology on the ground. And then if you reach this 10 to the minus