Quantum Gates Between Mesoscopic Spin Ensembles
- URL: http://arxiv.org/abs/2303.02300v1
- Date: Sat, 4 Mar 2023 02:49:26 GMT
- Title: Quantum Gates Between Mesoscopic Spin Ensembles
- Authors: Mohamad Niknam, Robert N. Schwartz, Louis-S. Bouchard
- Abstract summary: We show that in the limit where the size of the ensembles is small, it is possible to treat them as qubits with an effective coupling strength that scales with the number of spins.
One- and two-qubit gate operations can be implemented with high fidelities.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum algorithmics with single spins poses serious technological challenges
such as precision fabrication, rapid decoherence, atomic-scale addressing and
readout. To circumvent atomic-scale challenges, we examine the case of fully
polarized mesoscopic spin ensembles (spin-coherent states) whose total angular
momenta states map to qudit submanifolds. We show that in the limit where the
size of the ensembles is small compared to their separation, it is possible to
treat them as qubits with an effective coupling strength that scales with the
number of spins. If the spins within each ensemble are decoupled (e.g., via
control fields, spinning or diffusional averaging or materials engineering),
one- and two-qubit gate operations can be implemented with high fidelities.
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