Design and fabrication of large-scale diamond quantum memories in hybrid photonic circuits
ORAL
Abstract
A central goal in quantum information processing is the development of scalable quantum processors and quantum networks. Towards this end, solid-state “artificial atoms” such as color centers in diamond are especially promising because they combine efficient optical interfaces, minutes of spin coherence, and potentially very-large-scale fabrication. Here, we describe the design, fabrication, and integration of diamond quantum micro-chiplets containing single SiV and GeV centers with photonic integrated circuits (PICs). A near-deterministic photonic nanofabrication produces unity coupling of emitters to single-mode diamond waveguide arrays, which are subsequently assembled on an aluminum nitride PIC for on-chip routing and manipulation of photons. The combination of these advances allows the construction of a 72-channel quantum memory microphotonic chip. The ability to assemble large numbers of quantum memories with phase-stable PICs enables an architecture for high-efficiency, multiplexed quantum repeaters on a chip.
*We acknowledge support from ARL CDQI, NSF EFRI ACQUIRE, NSF CUA, NSF CIQM, DoD NDSEG, NSF GRFP, IC Postdoctoral Fellowship, MIT Lincoln Lab, NASA Space Technology Research Fellowship
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Presenters
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Tsung-Ju Lu
- Massachusetts Institute of Technology MIT
- Electrical Engineering and Computer Science, Massachusetts Institute of Technology MIT