Watch all our animations on our YouTube channel:
This animation explores how we can use semiconductor “quantum dots” to create quantum light for applications in quantum communications, computing and sensing. A quantum dot is a nano-scale defect in a semiconductor that confines single charge particles (electrons). This video shows how we make quantum dots and how we can use them as a source of single particles of light (photons) for quantum technologies. At the University of Sheffield, we are using these techniques to produce nano-photonic semiconductor chips to power the next generation of optical quantum technologies.
This year has been a very busy year for our outreach activities, presenting our Quantum Light exhibit at Discovery Night, the Exploring STEM for Girls event and returning to the Cheltenham Science Festival. Between these three events we have encouraged thousands of people to explore the exciting world of quantum light and hopefully inspired a number of them to become the next generation of quantum researchers. We were also thrilled to discover that so many attendees shared our excitement about quantum physics, we look forward to meeting many more of you at our future events.
How can we protect the fragile quantum states to make real-world quantum computing and applications? In this video, we explain why qubits made of single particles are so sensitive and how, in principle, to go around this problem to make robust qubits.
Directed by Maksym Sich; written by Maksym Sich and Earl T. Campbell, design & animation by Gareth Jones, http://www.23i.co.uk/, music by Paul Blakeman and Jamie Holmes. Funding The Engineering and Physical Sciences Research Council (EPSRC) Grant EP/N031776/1.
In this animation, the next gen. of optoelectronic devices based upon the physics and tech. of layered 2D materials is presented. Following the discovery of graphene a host of other 2D materials have been discovered with a wide range of different properties. We explain the concept and unique properties of 2-dimensional materials and show that by stacking different 2D materials into carefully constructed stacks, these properties can be combined to produce artificial materials known as van der Waals heterostructures with tailor-made properties. Such systems are at the forefront of semiconductor research of which our research group in Sheffield is actively contributing.
In this animation we explain what a quantum bit (qubit) is and why a quantum computer can be better than a classical computer. We describe our vision of how to build a quantum computing circuit using light on a chip, which is our plan for the near future.
The basic underlying physics of exciton-polariton formation in a semiconductor microcavity is explained in this short animation. Fascinating fundamental effects can be observed in microcavity polariton systems, such as stimulated parametric scattering, non-equilibrium Bose-Einstein condensation and superfluidity. We have a large research activity aimed at understanding and exploiting the light-matter interactions in exciton-polariton systems.
An animation describing the Hong-Ou-Mandel effect in photonic structures, a key component of photonic quantum information processing. We are developing miniaturised semiconductor structures like the one shown in the animation to demonstrate the Hong-Ou-Mandel effect. Our overall goal is to interface static qubits (exciton or spin states in quantum dots) with flying qubits (photons), in order to demonstrate the key components of quantum networks.