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Vehicles routed with efficient use of qubits
CQT researchers and their collaborators have devised an approach to make efficient use of qubits for the ‘vehicle routing problem’. The team, led by CQT Principal Investigator Dimitris Angelakis, succeeded in going beyond the usual problem sizes possible on noisy intermediate-scale quantum devices. They formulated the problems based on realistic shipping scenarios provided by contacts at ExxonMobil, the multinational oil and gas corporation.
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Single atom surprisingly chill after laser treatment
CQT researchers Chow Chang Hoong, Ng Boon Long, Vindhiya Prakash and Christian Kurtsiefer find that an established cooling method is unexpectedly effective for neutral atoms in an optical trap. In a paper in Physical Review Research, which is highlighted as an Editor’s Suggestion, they detail how they demonstrate electromagnetically induced transparency cooling for an optically trapped single neutral Rubidium atom.
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On 7 June, the United Nations approved a resolution that 2025 will be the International Year of Quantum Science and Technology. CQT and the Institute of Physics Singapore are partners of the initiative.
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Meet Nayanthara Prathap! After joining Singapore’s inaugural Quantum Bootcamp last year, Nayanthara is now a research intern working on quantum algorithms.
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Novel solid-state device offers single photons on demand
The group of CQT Principal Investigator Gao Weibo and their collaborators are the first to achieve near-unity quantum efficiency in 2D single photon emitters. They report their results in Nature Photonics. The team’s novel approach reached a quantum efficiency of 76.4% on average and more than 90% for some emitters, approaching what is known as ‘unity quantum efficiency’ of 100%.
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Preprints
- Emergence of Fluctuation Relations in UNO.
- An even-parity precession protocol for detecting nonclassicality and entanglement.
- Efficient photon-pair generation in layer-poled lithium niobate nanophotonic waveguides.
- Classically Spoofing System Linear Cross Entropy Score Benchmarking.
- Observation of quantum thermalization restricted to Hilbert space fragments.
- Realisation of versatile and effective quantum metrology using a single bosonic mode.
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Centre for Quantum Technologies, NUS Science Drive 2 Block S15-03-18 Singapore 117543 |
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cqtsec@nus.edu.sg |
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+65 6516 2818 |