Our work plan has 6 Work Packages (WPs), each being a joint effort of several consortium members. The Pert Chart in Fig. 1 describes how the main activities and components inter-relate to attain ORQUID intermediate targets and final objectives, showing routes to ORQUID achieving scientific and technological impact in quantum information technology and sensing. Our research approach is based on the development of a hardware platform (WP1 &2), its functionalization (WP3) and validation towards application (WP3 and 4).
In particular, WP1, led by WWU, focuses on design and fabrication of nanophotonic and electronic components that underpin our devices. WWU and ICFO provide theoretical guidance, drawing on their strong backgrounds in nano-photonics and light-matter interaction. WWU provides superconducting nanowire detectors, while ICFO will take care of 2D-materials integration. CNR and IMP will be responsible for testing.
WP2, led by CNRS, provides photostable organic molecules, synthesises new families that are self-positioning and have emission wavelengths more suited to silicon photonics and graphene plasmonics (ICFO). The chemistry laboratories of CEMES (CNRS) will work with the optics labs to ensure compatibility. Low- temperature fluorescence measurements at LEI, IMP, IFPAN and CNR will give feedback on the molecular samples.
WP3, led by IMP, concerns the building of a photon source using molecules coupled to a photonic circuit. This relies on input from WP1 and WP2. Low-temperature quantum optics experiments at CNR and IMP will test spectral purity and tuneability. The array of 8 indistinguishable sources will be assembled in this WP. The whole circuit including sources and detectors will be tested by WWU. IMP, CNR and ICFO will develop applications of the χ(3) nonlinear response of a single molecule.
WP4, led by LEI-ICFO, delivers the sensing devices. LEI, CNRS IFPAN and WWU will build the single charge sensors; CNR and ICFO the displacement sensors; ICFO will develop theoretical and numerical models for the sensing devices. All of these rely on input from WP1 and WP2.
WP5 led by CNR coordinates the activities related to dissemination, communication and exploitation of the project results.
WP6 is led by CNR and is devoted to management, organization and quality assurance. All partners are involved.
ORQUID Milestones (MX.X) and Deliverables (DX.X) (with dates for delivery) are:
(M3.1) Single molecule lifetime-limited emission in waveguide (efficiency higher than 80%) - (month 12)
(D3.6) Array of 8 tuneable single photon sources integrated on a chip - (month 36)
(D3.4) Indistinguishable single photon generation and detection on chip - (month 24)
(D2.4) Synthesis of stable lifetime-limited molecule emitting in the near infrared - (month 24)
(D3.5) On-chip single molecule phase shift - (month 36)
(D4.3) Single electron optical detection by a single molecule - (month 36)
(D4.5, M4.2) Quantum nanoposition sensor with sub-nm accuracy - (month 24)
(D4.6) Quantum back-action and position squeezing effects - (month 36)