Interferometer for phase-stabilization of quantum nodes using SIL-based color centers

Wouter D. Koek*, Ronald A.J. Hagen, Margherita Vaselli, Jaco P.J. Morits, Arian J. Stolk, Kian L. van der Enden, J. J. Benjamin Biemond, Erwin J. van Zwet, Jared Croese, More Authors

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

Many quantum entanglement generation protocols require phase stabilization between the nodes. For color centers that are embedded in a solid immersion lens (SIL) often a reflection from the SIL’s surface is input to an interferometer where it is mixed with a reference beam. However, the beam reflected beam by the SIL does not travel colinear with the photons that are emitted by the color center, which ultimately leads to a reduction of the interferometer’s signal-to-noise ratio (SNR). Additionally, imperfections of the SIL surface introduce aberrations into the reflected light, thereby further reducing the SNR. Through several design-iterations and extensive experience realizing phase stabilization on many different SIL’s we have come to an approach that significantly improves the SNR and enhances the operability of the quantum node. In this paper we report on our optical design and provide useful guidelines for the operation thereof.
Original languageEnglish
Title of host publicationQuantum Computing, Communication, and Simulation IV
EditorsPhilip R. Hemmer, Alan L. Migdall
PublisherSPIE
Number of pages1
ISBN (Electronic)9781510670822
DOIs
Publication statusPublished - 2024
EventQuantum Computing, Communication, and Simulation IV 2024 - San Francisco, United States
Duration: 27 Jan 20241 Feb 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12911
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceQuantum Computing, Communication, and Simulation IV 2024
Country/TerritoryUnited States
CitySan Francisco
Period27/01/241/02/24

Keywords

  • beam steering
  • birefringent crystals
  • interference contrast
  • interferometer
  • patterned aperture
  • phase stabilization
  • quantum entanglement
  • smart aperture
  • solid immersion lens

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