Introduction to our Research (University of Sussex Sept. 2013, 5min)


BBC documentary (Inside Out, BBC1, 31/10/11, 7.30pm, 15 min)


Physics World special about 5 physics spin-offs that will change our lives (October 2013, 5min)

More Videos

Ion Quantum Technology at Sussex...

Welcome to the web page of the Ion Quantum Technology group at the University of Sussex, Brighton, UK. The group is headed by Dr Winfried Hensinger. Our aim is to develop new quantum technologies, in particular, the ion trap quantum computer. For this purpose our research focuses on applied experimental quantum information science, development of new scalable methods to build ion trap arrays and the generation of large scale entanglement. In the short term, we aim to build quantum simulators and in the long term large scale quantum computers. Another research area is the exploration of the foundations of quantum mechanics. One of our interests is the interaction of atomic and macroscopic systems in the quantum domain. We also carry out research investigating physical processes in biological systems.

More information about our research, grouped by different target groups, can be found in the Research Section. Here you can find videos, explanations, interviews with current students and other useful information. 

You can also go on a Virtual Lab Tour exploring our labs and the technology we develop. A TEDx talk about the research directions of the group can be found here.

General News

June 2014

Phd positions in Quantum Technologies with trapped ions are available. There are one or more positions specializing on the fabrication of advanced microchips for quantum technologies (info available here) and one or more positions focussing on microwave quantum logic (info available here).

October 2013

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.

August 2013

We redeveloped our virtual lab tour. You can access it here.

August 2013

Details on the 1st Workshop on Quantum Simulations with Trapped Ions (IQSim13), to be held 16-19 December in Brighton can be found here.

June 2013

Winfried Hensinger gives a TEDx talk about the research directions of the group. You can watch it here:

June 2013

Seb Weidt is awarded the EPSRC doctoral prize for his outstanding PhD work.

June 2013

Chris Reed is awarded the prize for the best BSc. project in the Department of Physics & Astronomy at Sussex.

June 2013

Marcus Hughes passes his viva and is awarded the degree of Doctor of Philosophy.

January 2013

The Sussex Ion Quantum Technology group is featured in EPSRC's Pioneer magazine, you can find the article here, see p.18 and 19.

October 2012

PhD position available. You can find more information here. Application deadline is 20 December 2012 (applications after this deadline may be considered if position is not filled).

October 2012

Come and explore Ion Quantum Technology research at Sussex using our new interactive display, located in the Pevensey 2 building right in front of the IQT lab. 

January 2012

PhD position available. You can find more information here. Application deadline is 10 February 2012 (applications after this deadline may be considered if position is not filled).

January 2012

James Siverns successfully defends his thesis on 12 January.

November 2011

Robin Sterling successfully defends his thesis on 30 November.

October 2011

BBC documentary about research in the Sussex Ion Quantum Technology group, screened on 31 October, 2011, 7.30pm, BBC1, Inside Out. It can be viewed here. A press release is available here.

October 2011

Interview on the Breakfastshow on BBC Sussex Radio with Winfried Hensinger. A recording can be found here.

October 2011

James McLoughlin successfully defends his thesis on 25 October.

September 2011

Two postdoctoral positions are available: Postdoctoral Research Fellow in Ion Quantum Technology and Nanoscience (Closing date 4 October 2011) and Postdoctoral Research Fellow in Integrated Quantum Hybrid Systems (Closing date 14 October 2011). For more information, please email the head of group, Dr Winfried Hensinger

August 2011

Dr Altaf Nizamani is awarded the degree of Doctor of Philosophy on 6 August.

June 2011

The IQT group received a grant from the Sussex Enterprise Development Fund for another commercialisation project.

June 2011

James Siverns submits his doctoral thesis on 30 June.

June 2011

James McLoughlin submits his doctoral thesis on 1 June.

May 2011

Robin Sterling submits his doctoral thesis on 20 May.

May 2011

Altaf Nizamani successfully defends his thesis on 6 May.

February 2011

Altaf Nizamani submits his doctoral thesis on 21 February.

January 2011

There will be a special Issue on "Ion Trapping" in Applied Physics B - Lasers and Optics, edited by Winfried Hensinger, Danny Segal and Richard Thompson. Details can be found here. Submission deadline is 30 April 2011.

December 2010

The electronic proceedings of the 1st European Conference on Trapped Ions (ECTI 2010) have now been published and can be found here. We also added some conference pictures to the website and you can find them here.

October 2010

Postdoctoral research fellow / associate position in Trapped Ion Quantum Technology and Nano-science is available. More details can be found here.

July 2010

The Ion Quantum Technology Group is featured in the 2010 University of Sussex Research Review.

January 2010

Details on the 2010 European Conference on Trapped Ions (ECTI 2010) can be found here.

December 2009

A 3.5 year PhD position is available. More details can be found here.

July 2009

Winfried Hensinger has been awarded the title of Reader.

June 2009

Ben Jacques-Parr is the recipient of the departmental Pamela Rothwell prize for an outstanding BSc. research project.

June 2009

The IQT group received a grant from the Sussex Enterprise Development Fund to commercialize a specialized laser.

May 2009

Teaching quantum mechanics with electric guitars, more info here.

October 2008

Winfried Hensinger has been appointed London Technology Network Business Fellow to foster links between university research and industry.

July 2008

Winfried Hensinger has been awarded an EPSRC Leadership Fellowship with full economic cost value of £1.4M for the development of quantum technology with nanofabricated ion trap chips. A  postdoctoral position (up to 5 years) and a number of PhD scholarships are available. Please get in touch if you are interested.

June 2008

Marcus Hughes is the recipient of the departmental prize for an outstanding Master of Physics research project.

March 2008

Interview with Winfried Hensinger on UK Future TV about the general research directions of the group.

March 2008

Rajiv Ramasawmy is featured on the cover of the departmental prospectus featuring lasers in the mist (in our lab).

July 2007

Jessica Grove-Smith is the co-recipient of the departmental prize for an outstanding Master of Physics research project.

June 2007

First lasers are operating and the overhang for the optical table is completed.

 

April 2007

Dan Brown, Nik Davies, Jack Friedlander, Jessica Grove-Smith, Ben Pruess, David Scrivener and Tim Short successfully complete their undergraduate research projects.

5th March 2007

The optical table has arrived.

1st October 2006

4 graduate students and 8 undergraduate research project students join the group.

1st July 2006

Lab is nearly finished, equipment will be ordered soon.

10 December 05 until March 2006

Collaborative research at the University of Michigan

23 September 2005

Arrival at Sussex

Science News

September 2014

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.

Manuscript: Generation of spin-motion entanglement in a trapped ion using long-wavelength radiation

September 2014

We have developed a new method to efficiently prepare dressed state qubits and qutrits. Dressed states are well protected from noise making them ideal for use in many quantum technology applications. We also demonstrate individual addressing of two ions using the clock transition, showing that our method is suitable for permorming multi-ion quantum operations.

Manuscript: Efficient preparation and detection of microwave dressed-state qubits and qutrits with trapped ions

4 April 2014

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.

Manuscript: Fabrication and operation of a two-dimensional ion-trap lattice on a high-voltage microchip

University of Sussex Press Release

2 October 2013

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

University of Sussex Press Release

28 August 2012

Article showing how one can substantially increase voltages that can be applied to microfabricated ion traps in order to create more powerful devices, published in Applied Physics Letters (3 October 2013).

Manuscript: Increased surface flashover voltage in microfabricated devices

19 March 2012

Article on how to create optimal two-dimensional ion trap arrays for quantum simulation, published in New Journal of Physics (14 August 2012)

Manuscript: Optimisation of two-dimensional ion trap arrays for quantum simulation

24 June 2011

Article on the application of radio-frequency voltages to ion traps via helical resonators, published in Apl. Phys. B (17 January 2012).

Manuscript: On the application of radio frequency voltages to ion traps via helical resonators

14 January 2011

Article on the principles and operation of microfabricated ion traps including material considerations, a guide to the appropriate fabrication design, details of different fabrication processes and a summary of previously realized structures, published in Contemp. Phys. (14 Sept. 2011).

Manuscript: Microfabricated Ion Traps

July 2010

Article on design and operation of an ytterbium ion trap experiment with a setup that can host advanced surface and multilayer ion trap chips. We make a heating rate measurement and provide transition frequency measurements more precise than previously published work, published in Phys. Rev. A (21 Jan. 2011)

Manuscript: Versatile ytterbium ion trap experiment for operation of scalable ion-trap chips with motional heating and transition-frequency measurements

July 2010

Article on how to create optimal electrode configurations for separation and trap depth in surface ion traps, published in Applied Physics B (28 Nov. 2011)

Manuscript: Optimum electrode configurations for fast ion separation in microfabricated surface ion traps

June 2010

Article on Dopper-free Yb spectroscopy of Yb using a fluorescence spot technique providing frequency measurements that differ from previous published work and allowing to determine the average velocity of atoms along an atomic beam, published in Phys. Rev. A (8 Oct. 2010)

Manuscript: Doppler-free Yb Spectroscopy with Fluorescence Spot Technique

9 December 2009

Single ytterbium ions are trapped in an experimental setup particularly designed for the development of advanced ion trap chips. This setup allows for rapid turn-around time, optical access for all type of ion trap chips and up to 100 electric interconnects. The particular ion trap used features an ion - electrode distance of 300 microns and we observed an ion life time of more than 1 hour.

University of Sussex Press Release

Physics Department news update

March 2008

Article on the transport of ions in large scale multi-dimensional ion trap arrays is published in "Quantum Information & Computation".

Manuscript: On the Transport of Atomic Ions in Linear and Multidimensional Ion Trap Arrays.

September 06

Measurement of motional decoherence scaling for an ion trap with moveable electrodes, demonstrated significant suppression of patch potential heating, demonstrated ion trap with 23 microns ion-electrode spacing in experiments at the University of Michigan published in Physical Review Letters.

University of Sussex Press Release

Manuscript

August 2006

Efficient photoionization of neutral atoms with pico- and nanosecond pulses for loading ion traps.

Manuscript

January 2006

Experiments carried out at the University of Michigan reporting first two-dimensional shuttling operations including corner-turning and swapping two ions inside a T-junction published in Applied Physics Letters.

University of Sussex Press Release

Manuscript

Journal Link

December 2005

Integrated ion chip experiments at the University of Michigan published in Nature Physics.

University of Sussex Press Release

University of Michigan Press Release

Nature Physics Press Release

Nature Physics Manuscript

AIP Physics News Update: A Scalable Quantum Computer Chip

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