We propose a new quantum gate utilizing microwave radiation and dressed states that is highly robust to decoherence making it an attractive candidate for the implementation of high-fidelity microwave quantum logic. Published in the New Journal of Physics.
Manuscript: Multi-qubit gate with trapped ions for microwave and laser-based implementation
We have developed a new method to efficiently prepare dressed state qubits and qutrits, thereby significantly reducing the experimental complexity of gate operations with dressed-state qubits. Dressed states are well protected from noise making them ideal for use in many quantum technology applications. Published in Physical Review A and selected as ‘Editor’s Suggestion’.
We demonstrate spin-motion entanglement using longwave radiation. This is a critical step towards the experimental realisation of high-fidelity two-qubit gates using microwaves rather than laser radiation. Published in Physical Review A.
Manuscript: Generation of spin-motion entanglement in a trapped ion using long-wavelength radiation
The IQT group at Sussex becomes part of the UK National Quantum Technology Programe, a press release can be found here here).
We currently have an opening for a postdoctoral position. More details can be found here. We expect to have further vacancies that will be advertised shortly. If you are interested, please contact Dr.Winfried Hensinger for more information.
Phd positions in Quantum Technologies with trapped ions are available. There are a number of positions availalable in the areas of microwave quantum logic, quantum simulation and quantum sensing (info available here).
Demonstration of the first two-dimensional ion lattice integrated on a microchip. We realize a two-dimensional ion-trap lattice on a microchip using a new fabrication method that allows very-high voltages to be applied to the chip, enabling very deep ion traps. Published in Nature Communications.
We introduce an experimentally simple method of manipulating a dressed-state qubit (a qubit that is highly resilient to decoherence). Our method allows the implementation of general rotations of the qubit on the Bloch sphere, and we demonstrate this method using a trapped ytterbium ion, published in Physical Review Letters (2 October 2013)
Manuscript: Simple Manipulation of a Microwave Dressed-State Ion Qubit
Book author John Gribbin, Biolologist Laurence Pearl, PhD student Kim Lake and Winfried Hensinger give a short introduction to quantum computing for the Physics World special about 5 physics spin-offs that will change our lives.
Details on the 1st Workshop on Quantum Simulations with Trapped Ions (IQSim13), to be held 16-19 December in Brighton can be found here.
