Gravity and antigravity

Let's say that modern science has discovered and proves how gravity occurs at the quantum level. Suppose scientists discover the particle or energy responsible for the weight (mass) of every thing in the universe. According to today's theory, gravity is a weak force, and therefore what you would find has very little content over the entire atom and the effects occur when many atoms (such as planets and stars.) Accumulate. The assumed particle is graviton. Everything is known so far.

If we find a way to collect this energy or particle in large quantities without occupying the volume of an entire planet with the same number of atoms, will we create artificial gravity?
Let's make an analogy with a glass of water and some solute. In this case, water plays the role of normal matter in the universe, and solution is the particle responsible for gravity. If we successfully separate the solute from water, then we also find artificial gravity and possibly anti-gravity. Sonuds too easy!!

Negative gravity. Is it possible?
Anti-gravity is a very relative concept. In physical reality, there is no such thing as negative volume, negative length, speed, time, and gravity.

If the phenomenon is viewed as a force, then one will counteract the other in the opposite direction and it will only mathematically have a negative direction and energy.

If the phenomenon is considered as speed, length or energy, then one state will be higher than the other, regardless of the above condition.

Is gravity a result of a wave function caused by the relation between different particles, not a single particle?
According to DOPA Gravitational Theory, gravity is caused by gravitational waves passing through matter and inducing a minuscule drag on the nucleus of every atom encountered. This theory proposes that gravitational waves create the force of gravity by imposing a minuscule drag on each atom within matter as they pass through. This is the fundamental answer to your question.

Are alpha, beta, and gamma particles affected by gravity?
It should, but these gravity effects are difficult to observe/detect as electromagnetic effects are much more stronger in case of charged particles (like alpha and beta) while photon bending can be only observed when passing through the very strong gravitational fields of giant stars or of black holes. At CERN there are experiments trying to measure falling down (or up?) of the antihydrogen atoms but still without clear results due to difficulties to contain and observe microscopic quantities.

Does an atom vibrate differently when located in a strong and weak gravitational field?
According to General Relativity one would expect gravity to have such an effect that any timing that occurs within an atom would be slowed under more intense gravity. This should be evident in the spectra of very small stars such as white dwarfs, and apparently, is.

Can we make an object infected from gravity on Earth, in the same way when a superconductor doesn't stick to the magnet?
We need to find the equivalent effect but with gravity. The problem in this case is that magnetic fields arise from moving charge, whereas gravitational fields don’t arise from anything moving - they arise from stuff just “being there.” So gravitational fields are more similar to electric fields than to magnetic fields. But once again, there is a difference - electric charge comes in two polarities, so electric field lines that begin on positive charges can “end” on negative charges. There’s no corresponding polarity for gravity. All mass and energy is a “source” of gravitational field lines, and there are no sinks.

Method
Many things in physics depend on the method of measurement, because the moment we measure a quantum state or event, it produces results that the instrument and our understanding take for granted reallity. A known paradox in this regard is how light manifests the properties of a particle and a wave of energy at the same time.