The NQIT Hub research and development programme is divided into ten Work Packages covering Architecture (Work Package 0), Hardware (Work Packages 1-4), Applications (Work Packages 5-8) and Support (Work Package 9).
Work Package 0 - Architectures, standards and systems integration
The NQIT Hub’s hardware development effort is guided by detailed and continually updated plans for the system’s architecture. The Hub’s core proposition is that networking together quantum systems makes for a powerful and flexible information processing platform. Architectural theory and modeling must specify the performance requirements for the nodal devices, and should determine how best they can perform core operations such as entanglement purification.
Key tasks of work package 0 include: Development of 20:20 architecture including performance estimation and tolerancing, Coordination of engineering design of 20:20 demonstrator and Road mapping of development of Q20:20 technology.
Read more about our Architecture work.
Work Package 1 - Ion trap node engineering
This work package is designing and constructing a new ion trap with high optical access which will be used for initial experiments in interfacing trapped-ion ‘memory’ qubits using photonic ‘communication’ qubits. This is the basic element of the Q20:20 network architecture.
Key tasks of work package 1 include: Development of Ion-traps for Q20:20 goals, including single-ion traps, multi-ion traps and compact ion-trap suitable for Q20:20 demonstrator.
Read more about our Ion Trap work.
Work Package 2 - Atom-photon interfaces
The major aim of NQIT is to create a powerful quantum computing device by interconnecting many simple quantum processors that we have already demonstrated in our laboratories. To do this we need reliable interfaces at the single-quantum level to establish such a connected network. To do this, we harness the emission of light from non-moving quantum bits stored in single atoms.
Key tasks for work package 2 include: Atom-cavity coupled sources, Ion-cavity coupling demonstration, Integrated ion-cavity coupling with ion trap.
Read more about our Atom-Photon Interfaces work.
Work Package 3 - Photonic network engineering
Photonics is another way of saying “optical wiring” and in NQIT we are developing the optics to wire-up individual atoms, by collecting photons, particles of light, which they emit and using measurements to build a quantum connection between the atoms, known as entanglement. In parallel, we are also developing devices to enable quantum technologies based on light.
In this work package we will develop low-loss integrated optical switches for routing the photons emitted from the quantum network nodes developed in WPs 1 and 4. We are also developing a suite of tools for wide-area quantum networks, such as photon sources, multiplexed quantum key distribution, certified quantum random number generators, unit-efficiency photo-detectors, wavelength conversion and modular waveguide chips.
Read more about our Photonics work.
Work Package 4 - Solid state node engineering
This work package covers solid state alternatives to the ion trap nodes at the core of the NQIT approach, which may offer different functionality in a quantum network and possibly alternative routes to a scalable processor.
Key tasks of work package 4 include: Develop alternative Qubit nodes using Diamond colour centres, Develop integrated-cavity based colour centre nodes, Develop diamond based quantum sensors, Develop alternative nodes based on superconducting technologies.
Read more about our Solid State Node Engineering work.
Work Package 5 - Secure communications and verification
This work package investigates protocols for quantum cryptography, including Quantum Key Distribution (QKD) and the generation of trusted randomness, and protocols for the verification of quantum devices.
Key tasks of work package 5 include: to develop schemes for device independent QKD and to develop verification techniques for the Q20:20 demonstrator.
Read more about our Secure Communications and Verification work.
Work Package 6 - Networked quantum sensors
Experts in quantum information science as well as classical network theory and engineering have joined forces to elevate the principles of quantum-enhanced sensing to the practice of networked quantum sensors. WP4 studies the potential and possibilities offered by networking quantum sensors, combining ideas from quantum mechanics with the tools of network information and sensor theory.
This WP will propose ideas for experimental implementation and industrial exploitation. To that end, it works closely with the hardware work packages on physical systems such as photonics, trapped ions, and solid state qubits like vacancy centres in diamond.
Read more about our Networked Quantum Sensors work.
Work Package 7 - Quantum digital simulation
We investigate how the Q20:20 could be used as a quantum co-processor for classical high performance computing (HPC) with a focus on on algorithms used in scientific research computing. In order to develop these hybrid classical-quantum algorithms we split our classical software into a quantum part and a standard HPC part. Specifically, we currently study the Q20:20 as a co-processor for dynamical mean-field theory which is used in physics and material science for modelling strongly correlated materials. In the future we will employ the same strategy to extend hybrid algorithms to more generic non-linear partial differential equations for quantum simulating classical problems. We will again identify parts of algorithms which map well onto Q20:20 with the promise to outperform classical HPC.
Read more about our Quantum Digital Simulation work.
Work Package 8 - Hybrid classical/quantum computing
This work package aims to develop computation models for the NQIT architecture and to develop applications which leverage limited quantum resources in hybrid quantum/classical systems to serve as demonstrators for the NQIT architecture.
We are working on secure multi party computing with a passive adversary and the effect of the NQIT architectures and imperfection on security.
Key tasks for work package 8 include: Developing protocols for quantum-enhanced secure delegated classical computing.
Read more about our Hybrid Classical/Quantum Computing work.
Work Package 9 - Capabilities and support
Work Package 9 is concerned with development of the control systems for the ion-trap system, single photon avalanche detector development and the development of a laser-based waveguide writing facility. We have focused on the development of specifications and an architecture for the demonstrator ion-trap control system.
The key tasks in this work package are to develop a wave guide writing facility, to develop single photon detectors, and develop the Q20:20 control system.
Read more about our Capabilities and Support work.