2017
DOI: 10.1063/1.4982168
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Design and low-temperature characterization of a tunable microcavity for diamond-based quantum networks

Abstract: We report on the fabrication and characterization of a Fabry-Perot microcavity enclosing a thin diamond membrane at cryogenic temperatures. The cavity is designed to enhance resonant emission of single nitrogen-vacancy centers by allowing spectral and spatial tuning while preserving the optical properties observed in bulk diamond. We demonstrate cavity finesse at cryogenic temperatures within the range of F=4000–12 000 and find a sub-nanometer cavity stability. Modeling shows that coupling nitrogen-vacancy cen… Show more

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Cited by 56 publications
(53 citation statements)
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“…It can be observed in figures 2(a)-(d) that the shape of certain contours is very similar across different measurements, and that the width of the contour lines increases continuously with increasing q. Figure 2(f) shows the superposition of measurements taken at mode orders q=11, 12,14,16,22,24,28,38. Remarkably, the individual measurements combine to a consistent isocontour map.…”
Section: Transverse-mode Resonance Isocontoursmentioning
confidence: 77%
“…It can be observed in figures 2(a)-(d) that the shape of certain contours is very similar across different measurements, and that the width of the contour lines increases continuously with increasing q. Figure 2(f) shows the superposition of measurements taken at mode orders q=11, 12,14,16,22,24,28,38. Remarkably, the individual measurements combine to a consistent isocontour map.…”
Section: Transverse-mode Resonance Isocontoursmentioning
confidence: 77%
“…Closed-cycle cryostats allow for stable long-term operation, but also induce extra vibrations from their pulse-tube operation. In setups specifically designed to mitigate vibrations passively [20] vibrations modulate the cavity length over a range with a standard deviation of approximately 0.1 nm. Here we discuss how to make a cavity perform optimally in the presence of such vibrations.…”
Section: Clipping Lossesmentioning
confidence: 99%
“…Secondly, we consider a design that enables long uninterrupted measurements at cryogenic temperatures, potentially at a remote location with no easy access (such as a data center), through the use of a closed-cycle cryostat. The vibrations induced by the cryostatʼs pulse tube can be largely mitigated passively [20]. Active stabilisation of Fabry-Perot cavities has been demonstrated [21,22], including at a high bandwidth [23,24], however these results have not yet been extended to operation in a pulse-tube cryostat.…”
Section: Introductionmentioning
confidence: 99%
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“…Leaving aside possible controversies on the precise origin of the Casimir effect [30][31][32], one can expect the structure and dynamics of the physical vacuum in the laboratory, even with a locally void setup, to be influenced by the presence of surrounding matter. The fact that quantum entanglement is being successfully checked at rather large distances [33,34] can be an indication on the propagation of signals in vacuum [15].…”
Section: The Physical Vacuum In An Expanding Universementioning
confidence: 99%