High-efficiency microwave-optical quantum transduction based on a cavity
electro-optic superconducting system with long coherence time
- URL: http://arxiv.org/abs/2206.15467v1
- Date: Thu, 30 Jun 2022 17:57:37 GMT
- Title: High-efficiency microwave-optical quantum transduction based on a cavity
electro-optic superconducting system with long coherence time
- Authors: Changqing Wang, Ivan Gonin, Anna Grassellino, Sergey Kazakov,
Alexander Romanenko, Vyacheslav P Yakovlev, Silvia Zorzetti
- Abstract summary: Frequency conversion between microwave and optical photons is a key enabling technology to create links between superconducting quantum processors.
We propose a microwave-optical platform based on long-coherence-time superconducting radio-frequency (SRF) cavities.
We show that the fidelity of heralded entanglement generation between two remote quantum systems is enhanced by the low microwave losses.
- Score: 52.77024349608834
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Frequency conversion between microwave and optical photons is a key enabling
technology to create links between superconducting quantum processors and to
realize distributed quantum networks. We propose a microwave-optical
transduction platform based on long-coherence-time superconducting
radio-frequency (SRF) cavities coupled to electro-optic optical cavities to
mitigate the loss mechanisms that limit the attainment of high conversion
efficiency. In the design, we optimize the microwave-optical field overlap and
optical coupling losses, while achieving long microwave and optical photon
lifetime at milli-Kelvin temperatures. This represents a significant
enhancement of the transduction efficiency up to 50% under pump power of
140$\mu$W, corresponding to few-photon quantum regime. Furthermore, this scheme
exhibits high resolution for optically reading out the dispersive shift induced
by a superconducting transmon qubit coupled to the SRF cavity. We also show
that the fidelity of heralded entanglement generation between two remote
quantum systems is enhanced by the low microwave losses. Finally,
high-precision in quantum sensing can be reached below the standard quantum
limit.
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