We are looking for a Postdoctoral Research Assistant in Optically Networked Quantum Spin Registers in Diamond in the Department of Materials.
The post is fixed-term up to 30 November 2019.
You will play a central role in the development of optically networked quantum spin registers in diamond, within the UK Hub in Networked Quantum Information Technologies (NQIT), co-ordinated by the University of Oxford. The project goals are to develop diamond quantum technologies based on high efficiency spin-photon interfaces in which nitrogen vacancy defects written into diamond using laser processing techniques are coupled to bespoke optical microcavities.
You will play a key role within the Oxford group and collaborate with team members at partner universities (Cambridge, Warwick, and Strathclyde). You will be undertaking research in the engineering of colour centres in diamond using laser writing techniques; coupling of single NV- defects to optical microcavities at cryogenic temperatures; development of spin control techniques and logical operations; and entanglement of NV centres across an optical network
With a first degree and doctorate in physics, materials science, chemistry, engineering or related discipline; you will be well organised and self-motivated with the ability to manage the day-to-day running of a research project, to identify research objectives and carry out appropriate research activities within a given time-scale. You will have a sound grasp of quantum mechanics, optics, and atomic/molecular/solid state physics.
To apply, please visit the Oxford University Recruitment website: recruit.ox.ac.uk and search for vacancy 137336.
This is an exciting opportunity to join the User Engagement team of the NQIT Hub that is developing and commercialising quantum computing. NQIT is part of EPSRC’s £270m UK National QT Programme and a flagship project with responsibilities to achieve global leadership in research and economic impact. It is led by the University of Oxford.
Building on world-leading research, NQIT is developing practical quantum computing and simulation technologies and creating a new industry sector in the UK. The consortium of nine universities is funded by an award of £38m and supported by a number of commercial partners. The User Engagement Team identifies and works with such partners in the technology industry and the future application development and use. The current 5-year phase runs from 2014 until 2019.
This post is available for a fixed-term of 1 year, with the possibility of extension to November 2019. Furthermore the EPSRC is preparing for a 2nd phase that could extend to 2024. Secondments will be considered.
This is not a research role but the successful candidate must develop a good understanding of the relevant technologies and should possess a physical science, materials, engineering or computer science degree. Good interpersonal and communication skills are essential and an understanding of IP, commercial contracts and research funding would be advantageous. Candidates should demonstrate the ability to liaise effectively with wide range of organisations. Previous working experience in knowledge exchange, technology transfer or roles in innovation in academia, industry or the public sector would be an advantage.
Please direct enquiries about the role to Frances Sweeney.
Apply online at the Oxford University Recruitment website
An NQIT EPSRC DTP Studentship is available working in the Photonic Nanomaterials Group in the Department of Materials, University of Oxford, supervised by Professor Jason Smith.
This project will involve coupling diamond colour centres in single crystal membranes into optical microcavities to build efficient interfaces between coherent spin states and an optical network.
Our apparatus is now at the stage where we have demonstrated the first cavity-enhanced photon emission from a zero phonon line of a nitrogen vacancy centre in a diamond membrane. Further work is required to improve the quality of the colour centres in the membranes. The project will involve investigation of NV centres in membranes of different crystal orientations and using different material growth conditions.
Please contact Professor Jason Smith for more information.
To apply, please visit the Department of Materials Postgraduate Admissions website.
A maternity cover position is available for an experienced communications expert who is keen to lead the communications strategy for a high profile flagship research project led by the University of Oxford.
The size and complexity of this strategically critical award presents a rare opportunity for someone looking to embrace fast moving communications challenges in a world leading research environment, together with management of a wide and varied programme of internal and public facing events. Effective communication with consortium members, partners, stakeholders and the public is crucial to the Hub’s mission and this role is vital to the delivery of these objectives.
The Networked Quantum Information Technology Hub (NQIT) Hub builds on the world’s most advanced quantum technologies to develop practical technologies in entirely new sectors. It is funded by a £38m grant awarded to a consortium of nine universities and is supported by a number of commercial and governmental partners. As part of EPSRC’s £270m National Quantum Technologies Programme, the Hub has an international profile and corresponding responsibilities to achieve the highest levels of success. More information can be found at nqit.ox.ac.uk.
Applicants should either possess a sciences degree or evidence of the ability to engage rapidly and effectively with unfamiliar technical material. Understanding of quantum information and previous experience of working in a university environment are not essential as this role also has an industry focus. However, excellent communication skills gained with a variety of media and evidence of successful oral and written presentation of technical material are essential. Candidates will be expected to have demonstrable experience in the ability to liaise effectively with wide range of people including the general public, internal staff, industrial collaborators and funding agencies.
Please direct enquiries about the role to Frances Sweeney (email@example.com).
For a full job description and to apply online, please go to this job advert on the Oxford University Recruitment Website
Entanglement, in which two quantum systems can exhibit correlations that are greater than the limit allowed by classical physics, is one of the most intriguing predictions of quantum mechanics. Entanglement between remote atoms or ions is a key resource for quantum computing, and plays a central role in the proposed NQIT Q20:20 machine.
We propose two schemes for entangling remote atoms: one probabilistic and one deterministic. In the probabilistic scheme, two distant atoms each emit a photon which are combined at the two input ports of a 50:50 beamsplitter. If the photons are detected at different output ports, then the atoms are projected into an entangled state. In place of a simple beam splitter, we also anticipate using more complex photonic networks [A. Holleczek, PRL 117, 023602 (2016)] in combination with active optical photon switching and routing. In the deterministic scheme, an atom emits a single photon which is reabsorbed by a second atom by running the emission process in reverse [J. Dilley, PRA 85, 023834 (2012)]. In doing so, the state of the first atom is entangled with that of the second. In both schemes, a high-finesse optical cavity is used to enhance the light-atom interactions.
Currently, we have two optical cavity experiments with random atom loading. The first phase of the project will be to build an optical dipole trap to permanently hold single atoms in the cavities. The feasibility of this approach has recently been demonstrated [D. Stuart, arXiv:1708.06672], and suitable fibre-tip and FIB-milled cavity mirrors are at present under development. The second phase will be to generate and quantify the entanglement between the two remote atoms using full Bell-state tomography.
This is a highly challenging experimental project which will push the limits of laser and optical technology. It would suit a student with experience in atomic and laser physics and a keen interest in exploring quantum phenomena experimentally. EPSRC eligibility criteria apply for this project, therefore only UK students witha funding status of "Home" are eligible for the position.
The research team of Dr Kuhn does encompass two postdocs and four graduate students which operate three laboratories dedicated to cavity-qed and atom-photon coupling in cavities at the Physics department of the University of Oxford. The work space is well equipped, comprising four vacuum chambers for studying atom-photon coupling in cavities, a large number of ECDL and fibre lasers for atom manipulation, a frequency comb for synchronously stabilising all laser and cavity frequencies, and a large battery of single-photon counters. The project builds on the current work by other graduate students in our group, atom-cavity coupling and strong cavity coupling.
The new student will directly contribute towards achieving cavity-mediated remote entanglement. The deterministic entanglement scheme will be done in close collaboration with Almut Beige’s theory group in Leeds, who have developed a complete quantum description of the field inside a cavity, as well as devised cavity-cavity coupling protocols. All necessary apparatus exists within NQIT, including high-finesse cavities, vacuum chambers, and all necessary lasers for trapping and driving the photon production process. Close support on a day-to-day basis will be provided by at least one Oxford PDRA for the duration of the project.
Further details from Dr Axel Kuhn.
We are pleased to announce the opening of a full-time post-doctoral position at Oxford University as part of the EPSRC-funded Networked Quantum Information Technologies (NQIT) Hub. The aim of the Hub is to take some of the UK’s world-leading experimental work in ion traps and photonic networks and translate it into quantum computing technology through a highly ambitious and multidisciplinary programme.
The role is within the theory group of Dr Jonathan Barrett, focusing on the areas of small-scale quantum computing, secure communications, and the verification of quantum technology. The research includes the development of algorithms that can run on a small-scale quantum device, protocols for verifying that a quantum device is behaving as advertised even when held by an adversary, and/or device-independent protocols for cryptographic tasks such as key distribution and randomness generation. The work will support the overall theory, design, and applications development for quantum computing systems developed within the NQIT hub.
You will have, or shortly be expecting to obtain, a doctoral degree in Computer Science, Physics, Mathematics, or a related discipline. You should also have a proven record of research, including strong publications, in at least one of the areas of quantum communication, quantum cryptography or quantum algorithms; a willingness to collaborate with experimental groups; excellent scientific writing ability and good communication skills; willingness to travel internationally.
The post is fixed-term until 30 November 2019.
The closing date for applications is 12 noon on 11 April 2018
Further details of the post, including the selection criteria and method of application are available from: https://www.recruit.ox.ac.uk/pls/hrisliverecruit/erq_jobspec_version_4.jobspec?p_id=134078
Our staff and students come from all over the world and we proudly promote a friendly and inclusive culture. Diversity is positively encouraged, through diversity groups and champions, for example for example http://www.cs.ox.ac.uk/aboutus/women-cs-oxford/index.html, as well as a number of family-friendly policies, such as the right to apply for flexible working and support for staff returning from periods of extended absence, for example maternity leave.
The project is within the Networked Quantum Information Technologies Hub and in collaboration with Dr Peter Horak (University of Southampton).
For more information please contact Prof Matthias Keller (firstname.lastname@example.org).
The project unites two distinct areas of quantum information processing, single ions stored in radiofrequency traps, and single photons in optical fibres. In both fields, there have been spectacular advances recently. Strings of ions are presently the most successful implementation of quantum computing, with elementary quantum algorithms and quantum simulations realized. Photons are used to distribute entanglement over ever increasing distances. The principal challenge in the field is to enhance quantum processing power by scaling up current devices to larger quantum systems. We are pursuing the of the most promising strategies, distributed quantum computation, in which multiple small-scale ion processors are interlinked by exchanging photonic quantum bits via optical fibres. It requires an efficient quantum interface between ions and photons, mapping ionic to photonic quantum states and vice versa. To maximise fidelity and the success rate of the scheme, the interaction of ions and photons must take place in an optical cavity with high finesse, a technology in which the Ion Trap Cavity-QED and Molecular Physics group in Sussex has a leading role.
The aim of this project is to investigate, optimise and evaluate schemes to generate entangled states between trapped ions and photons in different implementations such as polarisation, time bin or phase decoding. For this, cavity assisted Raman transitions will be employed to transfer the ion’s state onto the photon in a deterministic way. The project is mainly experimental and will be conducted in the research labs in Sussex, the theoretical study of the schemes and possible developments of novel schemes will be pursued in collaboration with Peter Horak, University of Southampton.
Apply on-line via the University of Sussex portal, http://www.sussex.ac.uk/study/phd/apply. State in the Funding section of the application form that you are applying for the "PhD Studentships in Experimental Atomic Physics."
A 3.5 year PhD position is available in in the Ion Quantum Technology Group in the Sussex Centre for Quantum Technologies in the Department of Physics & Astronomy at the University of Sussex. The position is part of the UK National Quantum Technologies programme. The position consists of current UK/EU fees and a yearly stipend of £ £14296 which can be supplemented by tutoring. The position also includes an annual travel allowance. You should have a physics, or related degree.
We recently invented a method quantum gates with trapped ions are executed by the application of voltages to a microchip in the presence of a few global radiation fields analogous to the operation of transistors in a classical computer. We have already accomplished two-qubit quantum gates with fidelities close to the fault-tolerant threshold. We are now working towards increasing two-qubit gate fidelities above 99.9% and reduce gate times down between 10 - 100 μs. In order to achieve that, we are raising magnetic field gradients on the chip while increasing parameter fluctuation resilience and resilience to noise via a number of coherent control methods such as double dressing. We are also developing subsystems for this purpose such as stable voltage sources, microwave amplification and current sources together with industrial collaborators. The aim of this project is to combine the work of our industry collaborators with coherent control methods to obtain ultimate gate fidelities and gate speeds.
Read more about this opportunity and how to apply here.
This position is with a collaborating group at Oxford University and we hope there will be collaboration with NQIT:
We are looking for a Postdoctoral Research Assistant in the Predictability of Weather and Climate group within the sub-Department of Atmospheric, Oceanic and Planetary Physics (AOPP). The post will be available for three years from Jan 1st 2018.
This post fits within a general research programme developing imprecise weather and climate models. In particular, the post will complement and extend a European Research Council Advanced grant trying to estimate the information content in the hundreds of millions of variables in a weather forecast model. By restricting data transport inside a computer to the bits that contain real information, it is hoped to be able to develop much more efficient numerical weather and climate models.
More specifically, we are looking for a postdoctoral researcher who can explore the notion of imprecise computing for weather and climate related code in one of two possible types of innovative computing hardware:
- Field Programmable Gate Array (FPGA) computers
- Noisy quantum computers
For either of these, it is not necessary that the applicant has a knowledge of weather or climate model code.
For the FPGA work we will be seeking to extend the work of Duben et al (2015) and Jeffress et al (2017):
to study the implementation in hardware of arbitrarily reduced precision in simplified weather\climate models.
For the quantum computing work, we will be taking an even more idealised and exploratory approach – are there any situations where noisy quantum computers could be utilised in finding approximate solutions to the types of calculation used in a weather or climate model? Are there situations where these approximate solutions could have some value?
To apply, please visit the Oxford University Recruitment website: recruit.ox.ac.uk and search for vacancy 131932
Applications are invited for a Postdoctoral Research Assistant in Ion Trap Quantum Computing. The post is available initially for a fixed-term duration of 2 years, with the possibility of extension depending on funding.
Oxford is leading a multi-institution £38M EPSRC-funded “Hub” for Networked Quantum Information Technologies (www.nqit.ox.ac.uk). A central goal of this 5-year project is the development of a small prototype quantum information processor, consisting of trapped-ion qubits linked by photonic interconnects. The Oxford Ion Trap QC group has recently demonstrated the longest-lived single-qubit memory, the most precise single-shot qubit readout, and the highest-fidelity single- and two-qubit quantum logic gates, in any physical system, with all these elementary operations significantly surpassing recent estimates of the quantum computing “fault-tolerant threshold”.
We seek highly-motivated and technically-skilled individuals to join the team which is building the prototype device. As well as driving forward the development of this complex ion trap quantum network, duties will include preparing reports, presentations and scientific papers, and assisting with the supervision of graduate students.
Applicants should possess, or be close to obtaining a doctorate in physics or a related field and ideally a strong background in experimental quantum optics or atomic physics.
Previous experience in the field of ion or atom trapping will be highly desirable.
Candidates will be expected to demonstrate a good understanding of the relevant basic theory, skills in data analysis and numerical modelling, and a strong research track record.
The postholder will have the opportunity to teach.
Please direct enquiries about the role to Dr David Lucas (email@example.com).
For further details and to apply online, please visit the Oxford University recruitment website.