Latest News

March 2016

Adam Wyatt and co-authors publish the research article Attosecond sampling of arbitrary optical waveforms in optica.

See the Imperial press release.

Measured Waveforms: Top: Concept of high harmonic generation. Bottom: Few-cycle waveforms measured using ARIES.

Raw data for the publication can be downloaded here.

January 2014

Hugo Defienne from the Institut Langevin, CNRS in Paris, France in collaboration with Marco Barbieri and other co-workers posted the paper, Single-photon entanglement generation by wavefront shaping in a multiple-scattering medium, on the arXiv!

October 2013

Lijian Zhang, Animesh Datta, and Ian post the paper Precision metrology using weak measurements on the arXiv!

Matthias Mang presented his research at Frontiers in Optics 2013/Laser Science XXIX and has been selected as a Finalist in the Emil Wolf Outstanding Student Paper Competition.

Eilon Poem joins the group as a post-doctoral researcher from the Weizmann Institute of Science. ברוך הבא!

Krzysztof Kaczmarek from the University of Warsaw and Megan Engel from the University of Alberta join the group as PhD (aka DPhil) students. Welcome!

Linear Optical Quantum Computing in a Single Spatial Mode by Peter Humphreys et al. was published in Physical Review Letters! The paper was featured as a Viewpoint in the journal Physics.

Kick-off meeting for EPSRC programme grant held at Chichley Hall with collaborators Prof. Peter Smith, Martin Booth, and Myungshik Kim

September 2013

Josh Nunn starts a Royal Society University Research Fellowship on 'Scalable Photonics via Ensemble Atomic Raman Scattering (SPEARS)' -- congrats!

August 2013

Quantum Enhanced Multiple Phase Estimation by Peter Humphreys et al. was published in Physical Review Letters!

July 2013

Our paper on hollow-core photonic-crystal for quantum memories by Michael Sprague et al. was featured in Nature Photonics!

Peter Humphreys et al. posted the paper Quantum Enhanced Multiple Phase Estimation on the arXiv.

Patrick Michelberger gave an invited talk at Laser Physics 2013 on Storage of down-converted photons in a room-temperature quantum memory.

Michael Sprague presented the talk, Storage of Light in a Hollow-Core Photonic-Crystal Fibre, at the Quantum Information Processing and Communication conference in Florence, Italy. Patrick Michelberger presented the poster, Storage of down-converted photons in a room temperature quantum memory.

June 2013

Dylan Saunders joins the group as a post-doc, having completed his PhD in Geoff Pryde's group at Griffith University.

Xian-Min Jin presented the contributed talk Surpassing the conventional Heisenberg limit using classical resources at the Conference on Laser and Electro-Optics 2013.

Michael Sprague was selected as a Theodore Maiman Student Paper Competition Semi-Finalist and presented the talk, Storage of Light in a Hollow-Core Photonic-Crystal Fibre at the Conference on Laser and Electro-Optics 2013.

May 2013

Michael Sprague et al.'s paper, Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory, was published in the special issue on Quantum Memories in the New Journal of Physics!

Ben Metcalf, Tim Bartley and Adam Wyatt presented their research at CLEO Europe 2013 in Munich, Germany.

Peter Humphreys et al.'s paper Linear Optical Quantum Computing in a Single Spatial Mode was posted on the arXiv!

Brice Calkins from Sae Woo Nam's group at NIST in Boulder, Co., in collaboration with the integrated photonics group at Oxford and the Optoelectronics Research Centre at the University of Southampton, have posted the paper High quantum-efficiency photon-number-resolving detector for photonic on-chip information processing on the arXiv!

Xian-Min Jin et al. published the paper Sequential Path Entanglement for Quantum Metrology in Scientific Reports!

April 2013

Tim Bartley et al.'s paper, Direct Observation of Sub-Binomial Light, was published in Physical Review Letters! And it was selected as an Editors' Suggestion!

Justin Spring et al.'s paper, On-chip low loss heralded source of pure single photons, was posted on the arXiv!

March 2013

Josh Nunn et al.'s paper Enhancing Multiphoton Rates with Quantum Memories appears in Physical Review Letters!

Ian Walmsley visits the Kavli Institute for Theoretical Physics and gives seminar on experimental boson sampling. The video can be seen here!

February 2013

Josh Nunn presents invited talk Towards scalable photonics via quantum storage at SPIE Photonics West in San Francisco, California.

Tim Bartley et al.'s paper, Direct observation of sub-binomial light, was posted on the arXiv!

January 2013

Ben Metcalf et al.'s paper, Multiphoton quantum interference in a multiport integrated photonic device, has been published in Nature Communications!
Multiphoton interference on a photonic chip: We have shown the quantum interference of three single photons for the first time on a complex integrated photonic circuit.

December 2012

Justin Spring et al.'s paper, Boson Sampling on a Photonic Chip, was published in Science!

Featured in Nature News, Scientific American, Wired, Ars Technica, New Scientist etc..

In conjunction with Imperial College, London, we have directly measured the real electric field of a few-cycle pulse via an all optical technique.
Attosecond Sampling: Direct all-optical measurement of a few-cycle pulse

Michael Sprague et al. posted the paper Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory on the arXiv!

November 2012

Tim Bartley et al.'s paper Strategies for enhancing quantum entanglement by local photon subtraction, posted on the arXiv!

October 2012

Merritt Moore joins the group as a DPhil student from Harvard University.

Ian Walmsley gives an invited talk on group's work on entanglement in diamonds at Frontiers in Optics 2012/Laser Science XXVIII.

September 2012

Josh Nunn and Animesh Datta organise the Royal Society International Scientific Seminar Sources and signatures of quantum enhancements in technology at the Kavli Royal Society International Centre at Chicheley Hall.

Animesh Datta presents the invited talk A Compact entanglement distillery at the conference Photons 12 in Durham, UK.

August 2012

On-chip, three-photon interference paper by Ben Metcalf et al., in collaboration with the Optoelectronics Research Centre at the University of Southampton, posted on the arXiv.

Josh Nunn et al.'s paper, Enhancing multiphoton rates with quantum memories, posted on the arXiv!

July 2012

Michael Sprague's review of Paradox: The Nine Greatest Enigmas in Science by Jim Al-Khalili published in Science.

Lijian Zhang
et al. posted, on the arXiv, the paper Recursive quantum detector tomography!

Josh Nunn and Marco Barbieri present at the 21th International Laser Physics Workshop (LPHYS'12) in Calgary, Canada.

Ian Walmsley presents group's work at 11th International Conference on Quantum Communication, Measurement and Computing (QCMC 2012).

June 2012

Michael Sprague presents the contributed talk, Entangled Optical Phonons in Diamond at Room Temperature, at the American Physical Society Division of Atomic, Molecular and Optical Physics (DAMOP) Conference in Orange County, California.

May 2012

Master's student Philip Crowley, along with Animesh Datta et al., post paper Multiparameter quantum metrology on the arXiv.

Tim Bartley et al.'s paper, Quantum catalysis of multi-photon nonclassical states, posted on the arXiv!

Ian Walmsley elected as a Fellow of the Royal Society! Hear his New Fellows Seminar presentation!

Josh Nunn presents talk, Synchronizing single photons with quantum memories, at the Conference of Lasers and Electro-Optics (CLEO) 2012, in San Jose, California. Tim Bartley presents poster, Turning classical states quantum with linear optics and photon counting. Michael Sprague selected as a Theodore Maiman Student Paper Competition Semi-Finalist and invited speaker for talk, Entangling the Motion of Diamonds at Room Temperature. Presented by IA Walmsley.

April 2012

Bruno Rigal joins the memory sub-group for 4 months from the École Polytechnique in Paris. Bienvenue!

March 2012

Paper by Klaus Reim et al., Multi-pulse addressing of a Raman quantum memory: configurable beam splitting and efficient readout, posted on the arXiv!

December 2011: Publication: Diamond entanglement

Diamond entanglement paper published in Science!

Work was featured in CNN, CBC, Fox News, New Scientist, Scientific American, Popular Science, etc.. Featured in Nature News & Views Article as well!

Diamond correlation and lifetime paper published in Nature Photonics! Also featured in Nature Photonics News & Views!

Generation and detection of high harmonics for the first time on the new attosecond beamline.
Harmonics 1: High harmonics (15-23). Focus is well before the gas target, resulting in a large divergence.
Harmonics 2: High harmonics (15-23). Focus is near or after the gas target, resulting in a small divergence.

Duncan England et al.'s paper on the demonstration of the storage of polarization-encoded information in the Raman memory with up to 97% fidelity posted on the arXiv.

November 2011

Article published: "Accuracy measurements and improvement for complete characterization of optical pulses from nonlinear processes via multiple spectral-shearing interferometry" in Optics Express.
SPIDER accuracy measurements: Tests of SPIDER accuracy by performing measurements with different sized spectral shears. A larger (smaller) shear improves (worsens) the precision, but reduces (increases) the spectral resolution. Combining all shears combines the best of both.