Cloud storage is rapidly growing because we all, as individuals, companies, organisations and governments, rely on data farms filled with large numbers of 'server' computers using hard disk drives (HDDs) to store personal and societal digital information. One server is required for every 600 smartphones or 120 tablet computers, and trends such as Industry 4.0 and the Internet of Things are generating yet more new data, so the Cloud will continue to grow rapidly. The Cloud accounted for 25% of storage in 2010 and will account for >60% by 2020. As a result of these trends, the Cloud storage market is growing at 30% p.a. and is expected to be worth nearly $100b by 2022. While almost all personal computing and related electronic devices have migrated to solid state drives (SSD), HDDs are the only viable technology for cloud storage and a step change in the capacity of HDDs is required. Due to the limitations of existing magnetic materials, a new technology is needed to increase the density of magnetic data recording beyond the current 1Tb/sq. inch out to well beyond 10Tb/sq. inch and meet the 30% annual growth rate. Heat assisted magnetic recording (HAMR) has been identified to overcome physical challenges and has now demonstrated proof of principle. HAMR requires the integration of photonic components including lasers, waveguides and plasmonic antennas within the current magnetic recording head transducer. With a total addressable market (TAM) of 400-600 million hard disk drives p.a. with 3-4 heads per drive, HAMR is projected to require 2+ billion diode lasers p.a. & become the largest single market for laser diodes and photonic integration. HAMR will only be successful if it can be deployed as a low-cost manufacturable technology. Its successful development will therefore drive low-cost photonic integration and plasmonic technology into other industries and applications. Queen's University Belfast & University of Glasgow co-created CDT PIADS in 2014/15 with 9 companies, and the founding vision of CDT PIADS was to train cohorts of high calibre doctoral research students in the skillsets needed by the data storage & photonics partner-base & the wider UK supply chain. Students are trained in an interdisciplinary environment encompassing five themes of robust semiconductor lasers, planar lightwave circuits, advanced characterisation, plasmonic devices, & materials for high density magnetic storage. By providing high-level scientific & engineering research skills in the challenges of integrating photonics & advanced materials alongside rich & enhanced skills training, graduating doctoral students are equipped to lead & operate at the highest technical levels in cross geographic distributed environments. In renewal we exploit the opportunity to engage & enhance our programme in collaboration with Science Foundation Ireland & the Irish Photonics Integration Centre with complementary capabilities including packaging & microtransfer printing for materials/device integration. Our training is expanded to include research on computational properties of functional & plasmonic materials and introduce a new programme of professional externally validated leadership training & offering both PhD and EngD routes. All 50 students recruited in renewal will have industry involvement in their programme, whether through direct sponsorship/collaboration or via placements. Our anchor tenant partner, Seagate Technology, has a major R&D and manufacturing site in the UK. Their need to manufacture of up to 1b p.a. photonic integrated devices at this site gives CDT PIADS a unique opportunity to create an ecosystem for training & research in photonic integration and data storage. The anchor tenant model will bring other companies together who also need the human resource & outcomes of the CDT to meet their skills demands.

Quantum technologies (QT) are new, disruptive information technologies that can outperform their conventional counterparts, in communications, sensing, imaging and computing. The UK has already invested significantly in a national programme for QT, to develop and exploit these technologies, and is now investing further to stimulate new UK industry and generate a supply of appropriately skilled technologists across the range of QT sectors. All QT exploit the various quantum properties of light or matter in some way. Our work is in the communications sector, and is based on the fundamental effect that measuring or detecting quantum light signals irreversibly disturbs them. This effect is built into Nature, and will not go away even when technologies (quantum or conventional) are improved in the future. The fundamental disturbance of transmitted quantum light signals enables secure communications, as folk intercepting signals when they are not supposed to (so-called eavesdroppers) will always get caught. This means Alice and Bob can use quantum light signals to set up secure shared data, or keys, which they can then use for a range of secure communications and transactions - this is quantum key distribution (QKD). The irreversible disturbance of light can also be used to generate random numbers - another very important ingredient for secure communications, cryptology, simulation and modelling. In the modern world where communications are so ubiquitous and important, there is increasing demand for new secure methods. Technologies and methods widely used today will be vulnerable to emergent quantum computing technologies, so encrypted information being sent around today which has a long security shelf-life will be at risk in the future. New "quantum safe" methods that are not vulnerable to any future QT have to be developed. So QKD and new mathematical encryption must be made practical and cost effective, and soon. The grand vision of the Quantum Communications Hub is therefore to pursue quantum communications at all distance scales, to offer a range of applications and services and the potential for integration with existing infrastructure. Very short distance communications require free space connections for flexibility. Examples include between a phone or other handheld device and a terminal, or between numerous devices and a fixed receiver in a room. The Hub will be engineering these "many-to-one" technologies to enhance practicality and real-world operation. Longer distance conventional communications - at city, metropolitan and inter-city scales - already use optical fibres, and quantum communications have to leverage and complement this. The Hub has already established the UK's first quantum network, the UKQN. We will be extending and enhancing the UKQN, adding function and capability, and introducing new QKD technologies - using quantum light analogous to that used in conventional communications, or using entanglement working towards even longer distance fibre communications. The very longest distance communications - intercontinental and across oceans - require satellites. The Hub will therefore work on a new programme developing ground to satellite QKD links. Commercial QKD technologies for all distance scales will require miniaturisation, for size, weight and power savings, and to enable mass manufacture. The Hub will therefore address key engineering for on-chip operation and integration. Although widely applicable, key-sharing does not provide a solution for all secure communication scenarios. The Hub will therefore research other new quantum protocols, and the incorporation of QKD into wider security solutions. Given the changing landscape worldwide, it is becoming increasingly important for the UK to establish national capability, both in quantum communication technologies and their key components such as light sources and detectors. The Hub has assembled an excellent team to deliver this capability.

The EPSRC Quantum Computing and Simulation Hub will enable the UK to be internationally leading in Quantum Computing and Simulation. It will drive progress toward practical quantum computers and usher in the era where they will have revolutionary impact on real-world challenges in a range of multidisciplinary themes including discovery of novel drugs and new materials, through to quantum-enhanced machine learning, information security and even carbon reduction through optimised resource usage. The Hub will bring together leading quantum research teams across 17 universities, into a collaboration with more than 25 national and international commercial, governmental and academic entities. It will address critical research challenges, and work with partners to accelerate the development of quantum computing in the UK. It will foster a generation of UK-based scientists and engineers equipped with the new skill sets needed to make the UK into a global centre for innovation as the quantum sector emerges. The Hub will engage with government and citizens so that there is a wide appreciation of the potential of this transformative technology, and a broad understanding of the issues in its adoption. Hub research will focus on the hardware and software that will be needed for future quantum computers and simulators. In hardware we will advance a range of different platforms, encompassing simulation, near term quantum computers, and longer term fully scalable machines. In software the Hub will develop fundamental techniques, algorithms, new applications and means to verify the correct operation of any future machine. Hardware and software research will be closely integrated in order to provide a full-stack capability for future machines, enabled by the broad expertise of our partners. We will also study the architecture of these machines, and develop emulation techniques to accelerate their development. Success will require close engagement with a wide range of commercial and government organisations. Our initial partners include finance (OSI), suppliers (Gooch & Housego, Oxford Instruments, E6), integrators and developers (OQC, QM, CQC, QxBranch, D-Wave), users from industry (Rolls-Royce, Johnson Matthey, GSK, BT, BP, TrakM8, Airbus, QinetiQ) and government (DSTL, NCSC), and other research institutions (NPL, ATI, Heilbronn, Fraunhofer). We will build on this strong network using Industry Days, Hackathons and targeted workshops, authoritative reports, and collaborative projects funded through the Hub and partners. Communications and engagement with the community through a range of outreach events across the partnership will inform wider society of the potential for quantum computing, and we will interact with policy makers within government to ensure that the potential benefits to the UK can be realised. The Hub will train researchers and PhD students in a wide range of skills, including entrepreneurship, intellectual property and commercialisation. This will help deliver the skilled workforce that will be required for the emerging quantum economy. We will work with our partners to deliver specific training for industry, targeting technical, commercial and executive audiences, to ensure the results of the Hub and their commercial and scientific opportunities are understood. The Hub will deliver demonstrations, new algorithms and techniques, spinout technologies, and contribute to a skilled workforce. It will also engage with potential users, the forthcoming National Centre for Quantum Computing, the global QC community, policy makers and the wider public to ensure the UK is a leader in this transformative new capability.

Quantum physics describes how nature links the properties of isolated microscopic objects through interactions mediated by so-called quantum entanglement and that apply not just to atoms but also to particles of light, "photons". These discoveries led to the first "quantum revolution", delivering a range of transformative technologies such as the transistor and the laser that we now take for granted. We are now on the cusp of a second "quantum revolution", which will, over the next 5-10 years, yield a new generation of electronic and photonic devices that exploit quantum science. The challenge is to secure a leadership position in the race to the industrialisation of quantum physics to claim a large share of this emerging global market, which is expected to be worth £1 billion to the UK economy. QuantIC, the UK's centre for quantum imaging, was formed over four years ago to apply quantum technologies to the development of new cameras with unique imaging capabilities. Tangible impacts are the creation of 3 new companies (Sequestim, QLM and Raycal), technology translation into products through licencing (Timepix chip - Kromek) and the ongoing development with industry of a further 12 product prototypes. Moving forward, QuantIC will continue to drive paradigm-changing imaging systems such as the ability to see directly inside the human body, the ability to see through fog and smoke, to make microscopes with higher resolution and lower noise than classical physics allows and quantum radars that cannot be jammed or confused by other radars around them. These developments will be enabled by new technologies, such as single-photon cameras, detectors based on new materials and single-photon sensitivity in the mid-infrared spectral regions. Combined with our new computational methods, QuantIC will enable UK industry to lead the global imaging revolution. QuantIC will dovetail into other significant investments in the Quantum technology transfer ecosystem which is emerging in the UK. The University of Glasgow has allocated one floor of the £118M research hub to supporting fundamental research in quantum science and £28M towards the creation of the Clyde Waterfront Innovation Campus, a new £80M development in collaboration with Glasgow City Council and Scottish Enterprise focussing on the translation of nano and quantum science for enabling technologies such as photonics, optoelectronics and quantum. Heriot-Watt has invested over £2M in new quantum optics laboratories and is currently building a £20M Global Research Innovation and Discovery Centre opening in 2019 to drive the translation of emerging technologies. Bristol is creating a £43M Quantum Innovation centre which already has £21M of industrial investment. Strathclyde University is creating a second £150M Technology Innovation Centre around 6 priority areas, one of which is Quantum Technology. All of these form part of the wider UK Quantum Technology Programme which is set to transform the UK's world leading science into commercial reality in line with the UK's drive towards a high productivity and high-skill economy. QuantIC will lead the quantum imaging research agenda and act as the bond between parallel activities and investments, thus ensuring paradigm-changing innovation that will transform tomorrow's society.

Quantum Technologies (QT) are at a pivotal moment with major global efforts underway to translate quantum information science into new products that promise disruptive impact across a wide variety of sectors from communications, imaging, sensing, metrology, simulation, to computation and security. Our world-leading Centre for Doctoral Training in Quantum Engineering will evolve to be a vital component of a thriving quantum UK ecosystem, training not just highly-skilled employees, but the CEOs and CTOs of the future QT companies that will define the field. Due to the excellence of its basic science, and through investment by the national QT programme, the UK has positioned itself at the forefront of global developments. There have been very recent major [billion-dollar] investments world-wide, notably in the US, China and Europe, both from government and leading technology companies. There has also been an explosion in the number of start-up companies in the area, both in the UK and internationally. Thus, competition in this field has increased dramatically. PhD trained experts are being recruited aggressively, by both large and small firms, signalling a rapidly growing need. The supply of globally competitive talent is perhaps the biggest challenge for the UK in maintaining its leading position in QT. The new CDT will address this challenge by providing a vital source of highly-trained scientists, engineers and innovators, thus making it possible to anchor an outstanding QT sector here, and therefore ensure that UK QT delivers long-term economic and societal benefits. Recognizing the nature of the skills need is vital: QT opportunities will be at the doctoral or postdoctoral level, largely in start-ups or small interdisciplinary teams in larger organizations. With our partners we have identified the key skills our graduates need, in addition to core technical skills: interdisciplinary teamwork, leadership in large and small groups, collaborative research, an entrepreneurial mind-set, agility of thought across diverse disciplines, and management of complex projects, including systems engineering. These factors show that a new type of graduate training is needed, far from the standard PhD model. A cohort-based approach is essential. In addition to lectures, there will be seminars, labs, research and peer-to-peer learning. There will be interdisciplinary and grand challenge team projects, co-created and co-delivered with industry partners, developing a variety of important team skills. Innovation, leadership and entrepreneurship activities will be embedded from day one. At all times, our programme will maximize the benefits of a cohort-based approach. In the past two years particularly, the QT landscape has transformed, and our proposed programme, with inputs from our partners, has been designed to reflect this. Our training and research programme has evolved and broadened from our highly successful current CDT to include the challenging interplay of noisy quantum hardware and new quantum software, applied to all three QT priorities: communications; computing & simulation; and sensing, imaging & metrology. Our programme will be founded on Bristol's outstanding activity in quantum information, computation and photonics, together with world-class expertise in science and engineering in areas surrounding this core. In addition, our programme will benefit from close links to Bristol's unique local innovation environment including the visionary Quantum Technology Enterprise Centre, a fellowship programme and Skills Hub run in partnership with Cranfield University's Bettany Centre in the School of Management, as well as internationally recognised incubators/accelerators SetSquared, EngineShed, UnitDX and the recently announced £43m Quantum Technology Innovation Centre. This will all be linked within Bristol's planned £300m Temple Quarter Enterprise Campus, placing the CDT at the centre of a thriving quantum ecosystem.