CQT researchers and their collaborators find a quantum advantage for computing with open timelike curves

For his work on secure quantum computing, Joe is on the 2016 EmTech Asia, MIT Technology Review's 'Innovators Under 35 Asia' list

Precision measurement of entangled photon pairs yields correlation measure approaching the Tsirelson bound

Berge Englert and Oh Choo Hiap honoured for their exceptional contributions to the physics enterprise

The competition for quantum-inspired short stories runs with partners including Scientific American, Nature Futures, Tor Books and leading research centres around the world

The recovery of SPEQS boosts team's confidence in its rugged design

During her five-month residency, Tania will work on a novella with quantum themes

Theoretical work by an international team shows that quantum effects can speed up energy transfer

He was filmed by CQT's former Outreach Fellow Karol Jalochowski for a documentary series on scientific pioneers

Congratulations to our new doctors!

Organisation of the 22nd International Conference on Laser Spectroscopy was supported by CQT

Preprint from CQT researchers and their collaborators takes down long-standing conjectures

CQT researchers and graduate students taught a three-day workshop for junior college students

Artur Ekert starred in programme on quantum physics at the festival in New York City

Simulation of the Majorana equation follows theoretical proposal by CQT researchers

Prizes decided in competition organised by CQT with Scientific American and Nature as media partners

Precision measurements on trapped Barium ions by Manas Mukherjee's group are part of programme to study parity violation

The "Building Our Nation through Science and Technology" exhibition is being hosted at the University Cultural Centre and shopping centres across Singapore

Two-day event co-organised with the British High Commission's Science and Innovation team brought together leading researchers in quantum technologies from the UK and Singapore

Eleanor Wong's new physics-inspired work Initial Conditions will be staged on 13 and 14 March

CQT researchers and their collaborators discover family of second laws of thermodynamics for quantum systems

Judges and a public vote will now decide prizes in the Quantum Shorts 2014 film competition

CQT researcher contributes to finding a 'multiprover interactive proof system' with a quantum advantage

Before the scientific programme began, opening speeches were given by VIPs including His Excellency the Ambassador of France to Singapore.

Download the Centre's 2014 Annual Report to find out what happened in our quantum world last year.

The conference will be held 4-8 July 2016 at NUS and is expected to draw some 200 scientists.

Christian Kurtsiefer received the CQTian of the Year award for 2014 at CQT's Annual Event. Other awards were presented for performances and games.

CQT researchers show that wave-particle duality and quantum uncertainty are the same thing

How does a seven-year-old research centre celebrate its birthday? With a scientific symposium, of course.

Dagomir's quantum thriller, starring CQT's Vlatko Vedral as a shady scientist, claims a top prize in contest run by the Foundational Questions Institute

Some 50 participants attended the international workshop held 3-7 November

New Scientist magazine features a "Big Idea" from CQT's Vlatko Vedral and Mile Gu

Researchers’ approach could characterise entanglement for applications in communication and computation

The team reports in Physical Review Letters a time-reversal trick to improve photon shape for sending information into atoms

New projects at CQT to integrate quantum systems in the labs and build a quantum communications satellite

The competition, now in its third year, has Scientific American and Nature as media partners

Tan Peng Kian presented alongside artists at the seminar 'Visualizing the Universe', describing his measurements of photon bunching in sunlight

International team proposes novel quantum technology for light-harvesting

Researchers draw dancing analogy to explain connection between quantum uncertainty principle and quantum dynamics

Mr Lam Chuan Leong and Professor Tan Eng Chye receive medals in the Singapore National Day Awards 2014

Approach to certification works in real-world conditions and previously untestable situations

Berge Englert's book Lectures on classical electrodynamics is his ninth title

Q&A with the paper's first author explains the why, what, where and how of the article by CQT and Oxford researchers

CQT researchers participate in major events at the Singapore Science Festival

The Journal of Physics A awarded its Best Paper Prize 2014 to research by Matthew McKague, Tzyh Haur Yang and Valerio Scarani

Eight students graduate from CQT's PhD programme in 2014

The setup realises the Dicke model, a widely used description of how atoms interact with light

Technique that detects photon bunching in
sunlight might be applied to open questions in astrophysics

Around 20 scientists will participate in the MajuLab joint research unit directed by Christian Miniatura

Award to support the Centre's core operating costs from 2014

The article in Reviews of Modern Physics covers nonlocality as defined by Bell's theorem

Aarthi is doing a PhD in theoretical computer science, working on quantum algorithms

Berge Fest marks milestone in scientific style. Happy birthday Berge!

Huanqian joined CQT after completing her PhD with Nobel prize-winner Eric Cornell - and she says physics was once her worst school subject!

Sai is a Research Fellow at CQT whose interests include quantum metrology and South Indian cooking

An article in Nature reviewing developments in quantum cryptography describes how we can keep our secrets secret even when faced with the double challenge of mistrust and manipulation

A graduate of CQT's PhD programme, Colin is leaving for Austria to start a postdoc on quantum sensors

International team demonstrates novel quantum crypto protocol for mutually distrustful parties

Peng Kian works in a quantum optics lab on a project motivated by measuring the size of exoplanets

Annual gathering of the country’s physicists was supported by CQT

Troy, CQT’s newest Principal Investigator, is a gymnast, juggler and theoretical computer scientist

We're delighted to announce the winners of our Quantum Shorts 2013 flash fiction competition

The eight-week course by Valerio Scarani is being offered free to all online on Coursera.org

CQT researchers propose a protocol to create entangled states and perform cooling using phonon dynamics

The Centre was honoured to host PM Lee Hsien Loong and his delegation

Ten stories are shortlisted in the open international category and five in each student category

Another busy year is coming to a close. Download our Annual Report to find out what we've been up to, from cooling fermions to applying information theory

CQT has celebrated its sixth birthday with scientific talks, a birthday dinner, and the CQTian of the Year award for 2013

The source built at CQT uses four-wave mixing in a cold atomic vapour to produce photons well-suited to interfacing with atoms

Computer science student Nguyen Truong Duy won award for his research with Stephanie Wehner's group on quantum entanglement

The film by CQT Outreach Fellow Karol Jalochowski explores the mind-boggling questions raised by quantum theory. Watch excerpts now

Research Fellow Hugo Cable and alumnus Kavan Modi have written an opinion piece on the quantum phenomenon of ‘discord’

CQT researchers and collaborators perform bit commitment between Geneva and Singapore using novel protocol

International team demonstrates promising measurement approach the researchers dub 'photonic polarisation gears'

CQT's Joe Fitzsimons and his collaborators show way to check that a quantum computer is functioning as it should

Student's final-year project at CQT is recognised with University-wide prize

A new grant and new people are ushering in new research directions for Valerio's group.

Lana Sheridan, a Research Fellow at CQT, is interested in randomness. She also plays 'Kendo', a martial art which involves hitting people in the head with big sticks!

Johannes manages what is probably the world’s only optical frequency comb on Twitter

CQTians share their science and problem-solving skills with the public.

Research and people news from the six-strong group of Dimitris.

Meet this week- Chorng Wang, sharing his life and thoughts as a laboratory technician at CQT.

After the runaway success of last year's short film competition, CQT is now looking for quantum "flash fiction".

CQT congratulates its graduating students. Eight students from the PhD@CQT programme collect their degrees in 2013.

The 'Instant expert' guide in New Scientist magazine is written by CQT Principal Investigator Vlatko Vedral.

Debashis joined CQT as a PhD student in 2012. He had shown early signs of being a scientist. As a kid, he says, he did things like "mix up medicines that I'd apply to plants and try to build a model ram-jet engine."

Proposed experiment would remove assumptions from a test of quantumness that has applications in cryptography.

Graduate students achieve triple degeneracy in quantum matter experiment, cooling three atom species - a boson and two fermions - to 500nK

Agata is a Research Fellow whose quantum investigations are inspired by biological systems. She also blogs.

Troy Lee presented a paper at the conference identifying games for which Nash equilibria can be efficiently approximated.

Organising committee at CQT will plan ICOLS meeting for hundreds of delegates.

Nick's achievements since moving to Singapore include making the world's most precise measurement of an 'octupole moment' and learning to brew.

CQT helped to organise the 3-6 June conference offering professional development for physics teachers.

In the first Q&A of our new interview series we meet Jed, cryptographer and rock climber. Jed is a CQT PhD student.

Principle proposed by CQT's Stephanie Wehner and Corsin Pfister rules out various alternative theories of nature, including the possibility that state space is discrete.

Experiments described in Nature and Physical Review Letters demonstrate the 'non-adiabatic holonomic quantum gates' recently proposed by CQT theorists and their collaborators.

Researchers in Singapore and the UK propose a scheme to strengthen an error-correcting toric topological code.

CQT researchers show that a violation of the quantum uncertainty principle implies a violation of the second law of thermodynamics.

Singapore's debut in the global event will feature a local challenge from CQT PI Alexander Ling.

CQT researchers and their collaborators propose simulation of a relativistic quantum field theory that has resisted full mathematical solution since the 1950s.

Martin Kiffner is recognised by the American Physical Society for services to peer review.

Papers presented at the prestigious ACM-SIAM SODA conference tackle a search problem and the complexity of creating shared quantum states.

Team of 13 Principal Investigators led by Valerio Scarani to receive five-year grant from Singapore's Ministry of Education.

Joseph Fitzsimons and Troy Lee will each receive a research grant of up to S$3 million as recipients of the prestigious fellowship.

We are pleased to announce the results of the Centre for Quantum Technologies / New Scientist Quantum shorts film competition.

Hear the latest from our ion trappers, learn why CQT is spending a million dollars on a fridge and understand how Singapore has become the world capital for direct product theorems. All this and more in our 2012 Annual Report...

Computer scientists and experimentalists collaborate to implement a communication protocol for parties who don't trust each other.

Evon Tan is named CQTian of the Year and Troy Lee is chosen as the Centre’s top performer.

Ten quantum-inspired films will face an international jury and public vote.

The Centre for Quantum Technologies is five today. What have we achieved?

CQT researchers and collaborators have written a comprehensive review of measures of quantum correlations for Reviews of Modern Physics.

CQT's Outreach Fellow Karol Jalochowski reports on his progress.

The peaks should be a distinctive marker of the important but not well-understood phenomenon of Anderson localisation, predict CQT researchers and their collaborators.

Researchers including Artur Ekert, co-inventor of quantum cryptography, discover new power in the secret messaging technique.

CQT researchers and their collaborators present in Nature Physics a 'hidden influence inequality' that exposes how quantum predictions challenge our understanding of spacetime.

A preview from CQT's annual report for 2012, for which Serge Haroche contributed these reflections on his research and life beyond physics.

Article by Principal Investigator Vlatko Vedral exploring the past and future of thermodynamics is featured on the magazine's cover.

CQT congratulates Dave Wineland, a member of the Centre's advisory board, and Serge Haroche on their well-deserved award.

In pinning down the down the properties of ¹³⁷Ba⁺, the Mictrotraps group demonstrates skills for precision measurements and quantum computing experiments.

CQT PI Alexander Ling and his collaborators were invited to write about the group’s work on quantum optics for launch into space.

CQT's Stephanie Wehner and co-authors are first to look at the quantum analogue of classical randomness extractors.

Different reasoning leads CQT research teams to differing predictions for the lifetime of a quantum state implicated in birds' magnetic sense.

The second annual conference on quantum cryptography was hosted by CQT in Singapore, 10-14 September 2012.

Karol Jalochowski will be working on a documentary series about 'the most challenging puzzles of reality', as seen through a quantum lens.

Artur Ekert has co-authored with Oxford physicist David Deutsch an article looking “Beyond the Quantum Horizon”.

Six distinguished scientists spend a week at CQT for their annual review of the Centre's research direction.

CQT theorists contributed to a pair of papers in Nature Physics that put discord to the test.

The team has found a "direct product theorem for bounded-round public-coin randomized communication complexity" and will present the result at a prestigious conference.

Nelly, who has joined CQT as a research assistant after a successful undergraduate project, wins two prizes from Singapore's Nanyang Technological University.

Competition with New Scientist as media partner seeks short films inspired by quantum physics.

Arun is first from the now more than 50-strong PhD student cohort at CQT to collect his degree.

Events at the physics-focused meeting featured CQT Director Artur Ekert, Principal Investigator Alexander Ling and CQT PhD student Colin Teo.

Four CQTians - including student Colin Teo, selected as a bright young researcher - will join Singapore President Tony Tan Keng Yam at the prestigious event in Germany.

DPM Teo Chee Hean was accompanied on his visit to the National University of Singapore by the Permanent Secretary (National Research and Development) and other VIPs.

Photon-entangling technology that CQT team proposes to launch on a satellite performs well in weather-balloon test.

CQT congratulates Lai Choy Heng on his appointment as Executive Vice President (Academic affairs) for pioneering liberal arts college.

Paper by CQT researchers and their collaborators in Nature Communications highlights differences in computational power of different quantum phases.

Congratulations to Rahul on winning an NUS Young Researcher Award 2012.

A trio of papers arising from research initiated at CQT show how to harness spontaneous emission for good.

A month-long art/science collaboration at CQT has ended with the installation of a "Cabinet of Curiosities" on the Centre's sixth floor.

Researchers from Singapore and Spain have designed circuit QED schemes to take advantage of the 'ultrastrong coupling regime'. The results are published in Physical Review Letters.

CQT researchers and their collaborators report in Nature Communications that quantum mechanics can reduce the complexity of classical models.

Supported by the 2012 NUS Arts/Science Residency programme, Grit Ruhland will spend a month at CQT working on a "Cabinet of Curiosities".

In the New Journal of Physics, CQT's Dimitris G. Angelakis and his group members describe a technique for quantum simulation of neutrino oscillations.

CQT researchers and their collaborators propose in the Biophysical Journal a new quantum biology mechanism for European robins' magnetic sense

Serge Haroche gave the six-part lecture series "Quantum information with real or artificial atoms and photons in cavities" in February.

Two-day meeting encourages Singapore's standing as a hot spot for research in physics.

CQT's Rahul Jain and his collaborator publish in IEEE Transactions on Information Theory intuitive proofs of a widely-applied theorem.

Talk and exhibition stand at annual meeting of the American Association for the Advancement of Science in Vancouver, Canada, capture international attention.

CQT Director Artur Ekert profiled in Singapore's TODAY newspaper.

Idea invented by CQT's Joe Fitzsimons and colleagues implemented in the lab.

CQT-organised workshop drew researchers from around the world to discuss the significance of 'discord' as a measure of quantumness.

Arun to be first graduate of the PhD@CQT programme established in 2008.

CQT proudly supports the journalist and film-maker in producing documentaries about quantum physics.

International team demonstrates approach that could test for quantum superpositions in macroscopic objects.

CQT and Oxford researcher calculates lengthened lifetimes for quantum memories using toric codes in the presence of imperfections.

Award recognises exceptional contributions to making CQT a welcoming and vibrant place.

We are pleased to make available the Centre's Annual Report for 2011. Download the pdf here.

Around 50 researchers participated in the workshop on quantum state and process estimation.

Dagomir describes his team's novel approach to a foundational quantum problem: how the classical world emerges from the quantum.

Oxford and CQT researchers measure quantum effects in the macroscopic world.

Address to NUS highlights the two institute's commitment to work together on quantum research.

Researchers from Singapore and Oxford calculate that an 'amplifier' spin system could enhance the sensitivity of magnetic sensors thousandfold.

Research association between CQT, the French public research organisation CNRS and six French research institutions will facilitate collaboration.

CQT's Christian Kurtsiefer and Valerio Scarani appear in "Ciphercrime", a feature about hacking quantum cryptography systems.

Experiment by CQT researchers and their collaborators shows why quantum physicists should always read the fine print.

George Musser, staff editor and writer for Scientific American, has received an American Institute of Physics communication award.

Investment in S$600,000 frequency comb brings new optical precision to CQT’s experimental labs.

CQT's Esther Hänggi and colleagues show that it may be possible to rule out the idea that faster-than-light communication could explain results interpreted as quantum.

Congratulations to Masahito Hayashi on receiving the 2011 IEEE Information Theory Paper Award.

Congratulations to Kuldip Singh on receiving the Commendation Medal in Singapore’s National Day Awards 2011.

Paper proposes scheme to certify that entangling devices of the sort required for quantum teleportation behave as they should.

Congratulations to Le Phuc Thinh on winning an NUS Outstanding Undergraduate Researcher Prize.

The quantum world allows you to answer questions correctly when you don't even have all the information you should need, CQT and UC Berkeley researchers find.

CQT staff take hands-on science to opening event of the Singapore Science Festival

CQT researchers have three papers accepted for major conference FOCS 2011.

CQT researchers and their collaborators assess a qubit design that could offer a million-fold improvement in lifetime over the current experimental best.

Researchers in Singapore and Norway implemented an eavesdropper exploiting a loophole, since closed, in secure communications technology.

Artists Linda Sim and Dario Lombardi spend their residency at CQT developing an art installation inspired by ideas in physics.

CQT's Vlatko Vedral and Oscar Dahlsten, with colleagues from ETH Zurich, define the thermodynamic meaning of negative entropy.

The magazine's June cover story is by CQT's Vlatko Vedral.

Scientific American article "The strangest numbers in string theory" co-authored with John Huerta.

Researchers propose that photons can simulate a long-sought quantum effect.

CQT Director interviewed on science radio show The Red Shift.

CQT researcher Valerio Scarani publishes a news article and new paper on the 'tripartite no-signaling polytope'.

Markus is second CQT researcher to be honoured by the American Physical Society.

Theorists from Singapore and Spain collaborate on work that explores the relationship between non-locality and quantum entanglement.

Researchers' calculations show that a robin's magnetic compass may preserve quantum states for longer than achieved in the lab.

Singapore hosted the 14th Workshop on Quantum Information Processing in January 2011.

Paper by CQT researchers in recent top ten list for quantum computing from ScienceWatch.com

CQT researchers Stephen Clark and Dieter Jaksch have helped to uncover the ultra-fast quantum dynamics of electrons in a room-temperature material.

Read about our research achievements and activities in this year's annual report, available to download as a PDF.

Principal Investigator Stephanie Wehner co-authors paper in Science showing that the uncertainty principle determines the non-locality of quantum mechanics.

How might category theory be useful in quantum physics? A profile of CQT Visiting Research Professor John Baez on the website of the Foundational Questions Institute explains.

Principal Investigator Valerio Scarani and two students from NUS High School of Math & Science celebrate the publication of their textbook, Six Quantum Pieces.

The elegant coffee table book presents essays from 65 quantum scientists set among black and white photographs.

The weekly Polish-language news magazine Polityka features CQT in an article by science journalist Karol Jalochowski.

X-periment! is a three-day science carnival organised by A*STAR & Science Centre Singapore that celebrates the latest developments and research works in the field of science and technology.

Official partnership between CQT and IQC, University of Waterloo featured by Waterloo Chronicle and TheRecord.com

Centre for Quantum Technologies (CQT), a Research Centre of Excellence in National University of Singapore, has been recognized as a Laureate by the Computerworld Honors Program.

A recent publication of Kean Loon, Benoit, Han Rui, Berge and Christian M has been highlighted by the American Physical Society in "Physics" among the hits of the week

Tomasz Paterek, Dagomir Kaszliskowski, Valerio Scarani and Andreas Winter from CQT, together with co-workers of the University of Gdansk (Poland), propose a new physical principle called "information causality" in a paper published in Nature.

All you wanted to know in quantum cryptography has now been reviewed for you by Valerio Scarani of CQT and his co-authors, in a publication in Reviews of Modern Physics.

Computational Complexity Theory studies how difficult it is to solve a problem, or how hard it is to verify that a proposed solution is indeed correct. The degree of difficulty depends of course on the resources one can use: in particular, quantum physics being more general than classical physics, one might expect the use of quantum resources to help.

Mile Gu's recent work on complexity and emergence catches attention of editors of Nature.

New Journal of Physics, one of the highest impact factor journals for physics and quantum information, has devoted a special issue to quantum cryptography. Four out of the twenty selected articles have been authored by the CQT Quantum Optics Group.

When atoms are cooled down to a temperature very close to absolute zero, they tend to "bunch" together in a peculiar way predicted by Bose and Einstein in the 1920s.

How do migrating birds manage to travel from Northern Europe to Africa and back? It's quantum physics, stupid!

Take a laser (not a very powerful one, but still, emitting more light than a standard pointer) and shine the light on a single atom. Do you expect to see any effect?

A team from the quantum optics group recently took their quantum key distribution system quite literally into the "wilderness". It started with an invitation from our friends at NIST to do a joint exhibition of QKD systems at the two largest computer security (a.k.a. hackers) conferences in the world: Black Hat (for the corporate types) and DEFCON (for the alternative version) in Las Vegas.

The team of Prof Christian Kurtsiefer, Prof Valerio Scarani and Prof Antia Lamas-Linares have been awarded the 2008 National Science Award.

You wouldn't trust a device sold by your enemy to establish a secret code with your friends, would you? And yet, you should - if the device is suitably based on quantum physics.

The possibility of using quantum physics for secret communication has been noticed more than 20 years ago. "Quantum cryptography" has since been implemented, first in physics laboratories (including NUS), then in the first commercial devices.

Quantum physics offers a bizarre view of reality that is observer dependent and multifaceted. Read more about it in the Straits Times as explained by one of our PIs using card games and magical tricks.

Alex Ling , a graduate student at CQT, was recently asked to give a talk about his work in quantum cryptography at the Googleplex. Alex was in California attending Photonics West (a scientific/technical conference) presenting recent work on device independent quantum cryptography.

According to quantum theory, two quantum objects can be "entangled" in a way that only joint properties are sharply defined, while the individual properties of each object are lost. For instance, two "quantum arrows" (spins) can be such that they surely point in opposite directions (sharp joint property) but no arrow points in a definite direction (individual properties are lost). This is clearly at odds with our everyday experience, in which joint properties appear only as consequences of individual ones.