High fidelity macroscopic superposition states via shortcut to
adiabaticity
- URL: http://arxiv.org/abs/2309.06031v1
- Date: Tue, 12 Sep 2023 08:04:57 GMT
- Title: High fidelity macroscopic superposition states via shortcut to
adiabaticity
- Authors: Mehdi Aslani and Vahid Salari and Mehdi Abdi
- Abstract summary: A shortcut to adiabatic scheme is proposed for preparing a massive object in a macroscopic spatial superposition state.
A hybrid electromechanical setup in superconducting circuits is proposed for the implementation.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: A shortcut to adiabatic scheme is proposed for preparing a massive object in
a macroscopic spatial superposition state. In this scheme we propose to employ
counterdiabatic driving to maintain the system in the groundstate of its
instantaneous Hamiltonian while the trap potential is tuned from a parabola to
a double well. This, in turn, is performed by properly ramping a control
parameter. We show that a few counterdiabatic drives are enough for most
practical cases. A hybrid electromechanical setup in superconducting circuits
is proposed for the implementation. The efficiency of our scheme is benchmarked
by numerically solving the system dynamics in the presence of noises and
imperfections. The results show that very high fidelity cat states with
distinguishable spatial separations can be prepared with our protocol.
Furthermore, the protocol is robust against noises and imperfections. We also
discuss a method for verifying the final state via spectroscopy of a coupled
circuit electrodynamical cavity mode.
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