|May 14: New principle may help explain why nature is quantum|
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.
|May 6: Theorists see proposal for error-tolerant quantum gates realised|
Experiments described in Nature and Physical Review Letters demonstrate the 'non-adiabatic holonomic quantum gates' recently proposed by CQT theorists and their collaborators.
|April 24: Protocol makes noisy networks competitive for scalable quantum computing|
Researchers in Singapore and the UK propose a scheme to strengthen an error-correcting toric topological code.
|April 10: Uncertainty avoids perpetual motion machines|
CQT researchers show that a violation of the quantum uncertainty principle implies a violation of the second law of thermodynamics.
|April 9: CQT to participate in International Space Apps Challenge|
Singapore's debut in the global event will feature a local challenge from CQT PI Alexander Ling.
|March 11: Quantum simulation targets particle physics|
CQT researchers and their collaborators propose simulation of a relativistic quantum field theory that has resisted full mathematical solution since the 1950s.
|February 26: CQT Reseach Fellow named an Outstanding Referee|
Martin Kiffner is recognised by the American Physical Society for services to peer review.
|February 20: Double SODA showing from CQT computer scientists|
Papers presented at the prestigious ACM-SIAM SODA conference tackle a search problem and the complexity of creating shared quantum states.
|February 5: CQT team awarded S$10 million for research into randomness|
Team of 13 Principal Investigators led by Valerio Scarani to receive five-year grant from Singapore's Ministry of Education.
|January 25: Congratulations to CQT's two new NRF fellows|
Joseph Fitzsimons and Troy Lee will each receive a research grant of up to S$3 million as recipients of the prestigious fellowship.
|January 24: Inspired short films win quantum competition|
We are pleased to announce the results of the Centre for Quantum Technologies / New Scientist Quantum shorts film competition.
|January 18: Presenting the CQT Annual Report for 2012|
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...
|January 2: World's first demonstration of bit commitment performed at CQT|
Computer scientists and experimentalists collaborate to implement a communication protocol for parties who don't trust each other.
|December 14: Awards made to CQTian of the Year 2012 and CQT's Got Talent winner|
Evon Tan is named CQTian of the Year and Troy Lee is chosen as the Centre’s top performer.
|December 13: A shortlist for the Quantum Shorts film competition|
Ten quantum-inspired films will face an international jury and public vote.
|December 7: Happy birthday to us|
The Centre for Quantum Technologies is five today. What have we achieved?
|November 29: Everything you ever wanted to know about measuring quantumness|
CQT researchers and collaborators have written a comprehensive review of measures of quantum correlations for Reviews of Modern Physics.
|November 27: Quantum dreams: an update on CQT's documentary project|
CQT's Outreach Fellow Karol Jalochowski reports on his progress.
|November 23: Twin peaks signal wave localisation|
The peaks should be a distinctive marker of the important but not well-understood phenomenon of Anderson localisation, predict CQT researchers and their collaborators.
|November 5: Quantum cryptography can resist malicious manipulation|
Researchers including Artur Ekert, co-inventor of quantum cryptography, discover new power in the secret messaging technique.
|October 29: Looking beyond space and time to cope with quantum theory|
CQT researchers and their collaborators present in Nature Physics a 'hidden influence inequality' that exposes how quantum predictions challenge our understanding of spacetime.
|October 23: Interview with 2012 Nobel Prize winner Serge Haroche|
A preview from CQT's annual report for 2012, for which Serge Haroche contributed these reflections on his research and life beyond physics.
|October 23: CQTian writes for New Scientist magazine about the physics that may explain everything|
Article by Principal Investigator Vlatko Vedral exploring the past and future of thermodynamics is featured on the magazine's cover.
|October 9: 2012 Nobel Prize in Physics to pioneers of quantum technologies|
CQT congratulates Dave Wineland, a member of the Centre's advisory board, and Serge Haroche on their well-deserved award.
|October 5: Experimental precision ahead of theory in measurements of Barium|
In pinning down the down the properties of 137Ba+, the Mictrotraps group demonstrates skills for precision measurements and quantum computing experiments.
|October 2: CQT-led team contributes feature to Optics and Photonics News|
CQT PI Alexander Ling and his collaborators were invited to write about the group’s work on quantum optics for launch into space.
|September 28: Extracting randomness from its root source|
CQT's Stephanie Wehner and co-authors are first to look at the quantum analogue of classical randomness extractors.
|September 25: Results on birds' proposed quantum vision fly apart|
Different reasoning leads CQT research teams to differing predictions for the lifetime of a quantum state implicated in birds' magnetic sense.
|September 18: So long, QCRYPT|
The second annual conference on quantum cryptography was hosted by CQT in Singapore, 10-14 September 2012.
|September 13: Film-maker arrives at CQT for a year-long project|
Karol Jalochowski will be working on a documentary series about 'the most challenging puzzles of reality', as seen through a quantum lens.
|September 5: CQT Director writes for Scientific American special issue|
Artur Ekert has co-authored with Oxford physicist David Deutsch an article looking “Beyond the Quantum Horizon”.
|August 22: CQT welcomes its Scientific Advisory Board|
Six distinguished scientists spend a week at CQT for their annual review of the Centre's research direction.
|August 7: Results show that discord can deliver a quantum advantage|
CQT theorists contributed to a pair of papers in Nature Physics that put discord to the test.
|August 2: CQT computer scientists doom protocol to repeat itself|
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.
|July 30: CQT congratulates Nelly Ng Huei Ying on graduation awards|
Nelly, who has joined CQT as a research assistant after a successful undergraduate project, wins two prizes from Singapore's Nanyang Technological University.
|July 16: CQT announces the Quantum Shorts 2012 film competition|
Competition with New Scientist as media partner seeks short films inspired by quantum physics.
|July 12: Student's graduation is milestone for the PhD@CQT programme|
Arun is first from the now more than 50-strong PhD student cohort at CQT to collect his degree.
|July 5: Singapore showcased at Nobel Laureate Meeting|
Events at the physics-focused meeting featured CQT Director Artur Ekert, Principal Investigator Alexander Ling and CQT PhD student Colin Teo.
|June 27: CQTians to participate in Lindau Nobel Laureate Meeting|
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.
|June 13: Singapore's Deputy Prime Minister visits CQT|
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.
|June 5: CQT tests quantum satellite components in near-space environment|
Photon-entangling technology that CQT team proposes to launch on a satellite performs well in weather-balloon test.
|May 31: CQT's Deputy Director joins leadership team of new Yale-NUS College|
CQT congratulates Lai Choy Heng on his appointment as Executive Vice President (Academic affairs) for pioneering liberal arts college.
|May 9: Information is physical and physics is informational|
Paper by CQT researchers and their collaborators in Nature Communications highlights differences in computational power of different quantum phases.
|May 7: Principal Investigator Rahul Jain awarded University prize|
Congratulations to Rahul on winning an NUS Young Researcher Award 2012.
|April 26: Researchers invent scheme to extract quantum computing power from noise|
A trio of papers arising from research initiated at CQT show how to harness spontaneous emission for good.
|April 26: A quantum Cabinet of Curiosities|
A month-long art/science collaboration at CQT has ended with the installation of a "Cabinet of Curiosities" on the Centre's sixth floor.
|April 9: Proposal to get ultrafast performance from promising quantum computing technology|
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.
|March 30: How quantum physics could make 'The Matrix' more efficient|
CQT researchers and their collaborators report in Nature Communications that quantum mechanics can reduce the complexity of classical models.
|March 27: CQT welcomes artist-in-residence|
Supported by the 2012 NUS Arts/Science Residency programme, Grit Ruhland will spend a month at CQT working on a "Cabinet of Curiosities".
|March 20: Dance like a neutrino: new quantum scheme to simulate particle oscillations|
In the New Journal of Physics, CQT's Dimitris G. Angelakis and his group members describe a technique for quantum simulation of neutrino oscillations.
|March 19: Investigation of birds’ quantum skills prompts new magnetoreception theory|
CQT researchers and their collaborators propose in the Biophysical Journal a new quantum biology mechanism for European robins' magnetic sense
|March 1: Prestigious College de France lectures hosted at CQT – course notes available|
Serge Haroche gave the six-part lecture series "Quantum information with real or artificial atoms and photons in cavities" in February.
|February 28: CQT supports Institute of Physics Singapore meeting at NUS|
Two-day meeting encourages Singapore's standing as a hot spot for research in physics.
|February 27: Researchers welcome new proofs of the quantum substate theorem|
CQT's Rahul Jain and his collaborator publish in IEEE Transactions on Information Theory intuitive proofs of a widely-applied theorem.
|February 21: CQT participates in global science event|
Talk and exhibition stand at annual meeting of the American Association for the Advancement of Science in Vancouver, Canada, capture international attention.
|February 6: Thinker, diver, pilot, code-breaker|
CQT Director Artur Ekert profiled in Singapore's TODAY newspaper.
|January 20: Quantum physics enables perfectly secure cloud computing: paper in Science|
Idea invented by CQT's Joe Fitzsimons and colleagues implemented in the lab.
|January 19: Singapore hosts first international workshop on quantum discord|
CQT-organised workshop drew researchers from around the world to discuss the significance of 'discord' as a measure of quantumness.
|January 13: CQT congratulates first PhD@CQT student to defend thesis|
Arun to be first graduate of the PhD@CQT programme established in 2008.
|January 9: Presenting 'The Mechanics', a short film by Karol Jalochowski|
CQT proudly supports the journalist and film-maker in producing documentaries about quantum physics.
|January 4: In search of certainty about superpositions: paper in Nature Communications|
International team demonstrates approach that could test for quantum superpositions in macroscopic objects.
|December 30: Imperfections could massively improve quantum hard drives: paper in Physical Review Letters|
CQT and Oxford researcher calculates lengthened lifetimes for quantum memories using toric codes in the presence of imperfections.
|December 16: Inaugural CQTian of the Year award presented to Swee Yee Wee|
Award recognises exceptional contributions to making CQT a welcoming and vibrant place.
|December 13: Presenting the CQT Annual Report for 2011|
We are pleased to make available the Centre's Annual Report for 2011. Download the pdf here.
|December 8: CQT hosts 'unconference' on quantum tomography|
Around 50 researchers participated in the workshop on quantum state and process estimation.
|December 7: CQT's Dagomir Kaszlikowski guest blogs for Scientific American|
Dagomir describes his team's novel approach to a foundational quantum problem: how the classical world emerges from the quantum.
|December 2: Diamonds entangled at room temperature: paper in Science|
Oxford and CQT researchers measure quantum effects in the macroscopic world.
|November 28: Governor General of Canada cites CQT-IQC collaboration in speech|
Address to NUS highlights the two institute's commitment to work together on quantum research.
|November 11: Proposal holds promise for imaging atoms by their nuclear magnetic field: paper in Phys Rev Lett|
Researchers from Singapore and Oxford calculate that an 'amplifier' spin system could enhance the sensitivity of magnetic sensors thousandfold.
|November 11: Ceremony marks creation of International Associated Laboratory by CQT and French partners|
Research association between CQT, the French public research organisation CNRS and six French research institutions will facilitate collaboration.
|October 24: CQT researchers in New Scientist article on cracking the uncrackable code|
CQT's Christian Kurtsiefer and Valerio Scarani appear in "Ciphercrime", a feature about hacking quantum cryptography systems.
|October 21: How a quintessential quantum test was fooled: paper in Physical Review Letters|
Experiment by CQT researchers and their collaborators shows why quantum physicists should always read the fine print.
|October 18: CQT congratulates writer-in-residence on award|
George Musser, staff editor and writer for Scientific American, has received an American Institute of Physics communication award.
|September 29: CQT lasers get new taskmaster|
Investment in S$600,000 frequency comb brings new optical precision to CQT’s experimental labs.
|September 13: Ruling out alternatives to quantum theory: paper in Physical Review Letters|
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.
|August 23: Prestigious information theory award won by CQT's Masahito Hayashi|
Congratulations to Masahito Hayashi on receiving the 2011 IEEE Information Theory Paper Award.
|August 11: CQT Admin Director receives national honour|
Congratulations to Kuldip Singh on receiving the Commendation Medal in Singapore’s National Day Awards 2011.
|August 8: Entangling measurements for the cautious: paper in Physical Review Letters|
Paper proposes scheme to certify that entangling devices of the sort required for quantum teleportation behave as they should.
|August 2: CQT undergraduate research scoops University award for third consecutive year|
Congratulations to Le Phuc Thinh on winning an NUS Outstanding Undergraduate Researcher Prize.
|August 1: Quantum ignorance is hard to expose: paper in Physical Review Letters|
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.
|July 28: Families join CQT's X-perimental team|
CQT staff take hands-on science to opening event of the Singapore Science Festival
|July 27: Three insights into the foundations of computer science|
CQT researchers have three papers accepted for major conference FOCS 2011.
|July 20: Atomic trios promise robust quantum data storage: paper in Physical Review A|
CQT researchers and their collaborators assess a qubit design that could offer a million-fold improvement in lifetime over the current experimental best.
|June 15: Making quantum cryptography truly secure: paper in Nature Communications|
Researchers in Singapore and Norway implemented an eavesdropper exploiting a loophole, since closed, in secure communications technology.
|June 14: CQT hosts two artists-in-residence|
Artists Linda Sim and Dario Lombardi spend their residency at CQT developing an art installation inspired by ideas in physics.
|June 2: Quantum knowledge cools computers: paper in Nature|
CQT's Vlatko Vedral and Oscar Dahlsten, with colleagues from ETH Zurich, define the thermodynamic meaning of negative entropy.
|May 19: Scientific American readers told they are living in a quantum world|
The magazine's June cover story is by CQT's Vlatko Vedral.
|May 18: CQT's John Baez introduces the "octonions" to a popular audience|
Scientific American article "The strangest numbers in string theory" co-authored with John Huerta.
|April 12: Light could show electrons' personality split: paper in Physical Review Letters|
Researchers propose that photons can simulate a long-sought quantum effect.
|February 25: Artur Ekert gives radio listeners the low-down on quantum technologies|
CQT Director interviewed on science radio show The Red Shift.
|February 21: At the end of the quantum world: research in the Journal of Physics A|
CQT researcher Valerio Scarani publishes a news article and new paper on the 'tripartite no-signaling polytope'.
|February 16: CQT's Markus Grassl recognised for contributions to peer review|
Markus is second CQT researcher to be honoured by the American Physical Society.
|February 11: Non-locality from nothing: paper in Nature Communications|
Theorists from Singapore and Spain collaborate on work that explores the relationship between non-locality and quantum entanglement.
|January 27: CQT work on the quantum biology of birds draws media interest|
Researchers' calculations show that a robin's magnetic compass may preserve quantum states for longer than achieved in the lab.
|January 18: A successful QIP|
Singapore hosted the 14th Workshop on Quantum Information Processing in January 2011.
|January 17: Proposal for weaving light-matter qubits listed among "most cited papers"|
Paper by CQT researchers in recent top ten list for quantum computing from ScienceWatch.com
|December 15: Probing the quantum dynamics of electrons in a Mott insulator: paper in Nature Physics|
CQT researchers Stephen Clark and Dieter Jaksch have helped to uncover the ultra-fast quantum dynamics of electrons in a room-temperature material.
|December 13: Presenting the CQT Annual Report for 2010|
Read about our research achievements and activities in this year's annual report, available to download as a PDF.
|November 19: CQT Researcher uncovers surprise link between weird quantum phenomena|
Principal Investigator Stephanie Wehner co-authors paper in Science showing that the uncertainty principle determines the non-locality of quantum mechanics.
|October 22: The Art of Math|
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.
|October 14: The Straits Times reports on textbook co-authored with students|
Principal Investigator Valerio Scarani and two students from NUS High School of Math & Science celebrate the publication of their textbook, Six Quantum Pieces.
|October 13: French book features CQT's Valerio Scarani on randomness|
The elegant coffee table book presents essays from 65 quantum scientists set among black and white photographs.
|October 7: CQT in the news: Weirdness for the brave|
The weekly Polish-language news magazine Polityka features CQT in an article by science journalist Karol Jalochowski.
|July 28: X-periment! 2010|
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.
|March 31: Official partnership between CQT and IQC|
|March 31: CQT Recognized as Laureate by the Computerworld Honors Program|
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.
|October 27: Cold fermions as a hot topic!|
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
|October 22: A new physical principle behind quantum physics|
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.
|September 30: All you wanted to know in quantum cryptography|
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.
|August 5: QIP = PSPACE = IP ?|
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.
|May 25: Mile's work highlighted in Nature|
Mile Gu's recent work on complexity and emergence catches attention of editors of Nature.
|May 11: CQT features four articles in the NJP special issue on Quantum Cryptography|
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.
|May 10: Coolest place in the Equator|
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.
|January 31: Where does life come from?|
How do migrating birds manage to travel from Northern Europe to Africa and back? It's quantum physics, stupid!
|October 15: The shadow of a single atom|
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?
|August 27: Quantum Roadtrip|
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.
|August 8: National Science Award 2008|
The team of Prof Christian Kurtsiefer, Prof Valerio Scarani and Prof Antia Lamas-Linares have been awarded the 2008 National Science Award.
|July 26: The unbreakable code: Is this the lock?|
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.
|June 2: Quantum Cryptography is Possible with Finite Resources|
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.
|February 23: Quantum physics in Straits Times|
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.
|January 24: CQT Member in Google Techtalks|
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.
|January 23: Testing how weird nature really is|
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.