Massive quantum superpositions using magneto-mechanics
- URL: http://arxiv.org/abs/2307.14553v1
- Date: Thu, 27 Jul 2023 00:23:46 GMT
- Title: Massive quantum superpositions using magneto-mechanics
- Authors: Sarath Raman Nair, Shilu Tian, Gavin K. Brennen, Sougato Bose, and
Jason Twamley
- Abstract summary: We propose two schemes to prepare a spatial superposition of massive quantum oscillator systems with high Q-factor.
In the first method, we propose a large spatial superposition of a levitated spherical magnet generated via magnetic forces applied by adjacent flux qubits.
In the second method, we propose a large spatial superposition of a magnetically levitated (using the Meissner effect) flux qubit, generated via driving the levitated qubit inductively.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Macroscopic quantum superpositions of massive objects are deeply interesting
as they have a number of potential applications ranging from the exploration of
the interaction of gravity with quantum mechanics to quantum sensing, quantum
simulation, and computation. In this letter, we propose two related schemes to
prepare a spatial superposition of massive quantum oscillator systems with high
Q-factor via a superposition of magnetic forces. In the first method, we
propose a large spatial superposition of a levitated spherical magnet generated
via magnetic forces applied by adjacent flux qubits. We find that in this
method the spatial superposition extent ($\Delta z$) is independent of the size
of the particle. In the second method, we propose a large spatial superposition
of a magnetically levitated (using the Meissner effect) flux qubit, generated
via driving the levitated qubit inductively. In both schemes, we show that
ultra-large superpositions $\Delta z/\delta z_{\rm zpm}\sim 10^6$, are
possible, where $\delta z_{\rm zpm}$ is the zero point motional extent.
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