Resonant single-shot CNOT in remote double quantum dot spin qubits
- URL: http://arxiv.org/abs/2207.13588v1
- Date: Wed, 27 Jul 2022 15:42:31 GMT
- Title: Resonant single-shot CNOT in remote double quantum dot spin qubits
- Authors: Stephen R. McMillan, Guido Burkard
- Abstract summary: We propose a framework for ac-driven quantum gates between two non-local single-spin qubits dispersively coupled to a common mode of a superconducting resonator.
We expect gate times near 150 ns and fidelities above 90% with existing technology.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: A critical element towards the realization of scalable quantum processors is
non-local coupling between nodes. Scaling connectivity beyond nearest-neighbor
interactions requires the implementation of a mediating interaction often
termed a 'quantum bus'. Cavity photons have long been used as a bus by the
superconducting qubit community, but it has only recently been demonstrated
that spin-based qubits in double quantum dot architectures can reach the strong
coupling regime and exhibit spin-spin interactions via the exchange of real or
virtual photons. Two-qubit gate operations are predicted in the dispersive
regime where cavity loss plays a less prominent role. In this work we propose a
framework for ac-driven quantum gates, in the context of a CNOT operation,
between two non-local single-spin qubits dispersively coupled to a common mode
of a superconducting resonator. We expect gate times near 150 ns and fidelities
above 90% with existing technology.
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