ORCID Profile
0000-0002-8318-9245
Current Organisations
Centre for Quantum Technologies
,
National University of Singapore
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Elsevier BV
Date: 04-2015
Publisher: IEEE
Date: 07-2017
Publisher: The Optical Society
Date: 10-06-2016
Publisher: SPIE
Date: 18-11-2014
DOI: 10.1117/12.2071884
Publisher: American Physical Society (APS)
Date: 23-02-2017
Publisher: Springer Science and Business Media LLC
Date: 12-08-2019
Publisher: American Physical Society (APS)
Date: 11-05-2015
Publisher: IEEE
Date: 07-2017
Publisher: The Optical Society
Date: 16-11-2017
Publisher: Springer International Publishing
Date: 2020
Publisher: IOP Publishing
Date: 03-01-2014
Publisher: IEEE
Date: 07-2017
Publisher: American Physical Society (APS)
Date: 13-07-2017
Publisher: Springer Science and Business Media LLC
Date: 24-11-2015
DOI: 10.1038/NPJQI.2015.7
Abstract: In general relativity, closed timelike curves can break causality with remarkable and unsettling consequences. At the classical level, they induce causal paradoxes disturbing enough to motivate conjectures that explicitly prevent their existence. At the quantum level such problems can be resolved through the Deutschian formalism, however this induces radical benefits—from cloning unknown quantum states to solving problems intractable to quantum computers. Instinctively, one expects these benefits to vanish if causality is respected. Here we show that in harnessing entanglement, we can efficiently solve NP-complete problems and clone arbitrary quantum states—even when all time-travelling systems are completely isolated from the past. Thus, the many defining benefits of Deutschian closed timelike curves can still be harnessed, even when causality is preserved. Our results unveil a subtle interplay between entanglement and general relativity, and significantly improve the potential of probing the radical effects that may exist at the interface between relativity and quantum theory.
Publisher: Springer Science and Business Media LLC
Date: 26-06-2018
DOI: 10.1038/NCOMMS13222
Abstract: The no-cloning theorem states that an unknown quantum state cannot be cloned exactly and deterministically due to the linearity of quantum mechanics. Associated with this theorem is the quantitative no-cloning limit that sets an upper bound to the quality of the generated clones. However, this limit can be circumvented by abandoning determinism and using probabilistic methods. Here, we report an experimental demonstration of probabilistic cloning of arbitrary coherent states that clearly surpasses the no-cloning limit. Our scheme is based on a hybrid linear lifier that combines an ideal deterministic linear lifier with a heralded measurement-based noiseless lifier. We demonstrate the production of up to five clones with the fidelity of each clone clearly exceeding the corresponding no-cloning limit. Moreover, since successful cloning events are heralded, our scheme has the potential to be adopted in quantum repeater, teleportation and computing applications.
Publisher: OSA
Date: 2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2019
Location: Singapore
No related grants have been discovered for Jing Yan Haw.