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Centre for Quantum Technologies (CQT) Talk
Friday 22 January 2016, 02:00pm - 04:00pm
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Speaker: Sir Anthony Leggett (Nobel Prize in Physics in 2003)


Title: The mean-field approach to superconductivity:is it adequate for quantum-information purposes?


Abstract: In the quest for a topologically protected quantum computer, much attention has been paid to systems such as Sr_2RuO_4 which are widely believed to realize Cooper pairing in the so-called (p+ip) state, which in turn is thought to realize non-Abelian anyonic excitations (Majorana fermions).However, almost without exception theoretical analysis of the behavior of these excitations has been carried out within the framework of mean-field theory as instantiated in the Bogoliubov-de Gennes equations.I point out that quite simple examples show that these equations are not always even qualitatively reliable, and argue that an improved approach may totally change the standard conclusions, in particular about the degree of topological protection afforded by Majorana fermions


Target audience: Publice and fellow NUS staff and students

Location CQT Level 3 Seminar Room

4 March 2018 - The Class Ambassadors programme was started under the NUS Office of Alumni Relations in 2008. This year, we invited some Alumni Volunteers to join us for this gathering at NUSS Suntec Guild House.

Class Ambassador and Alumni Volunteers Gathering

10 March 2018 - Drop by and experience our campus vibrancy, and chat with professors and students to find out more about the vast global learning opportunities available at NUS.

NUS Open Day

17 March 2018 - Quarterly Alumni outdoor get together organised by the Faculty of Science, this time to Asian Civilisations Museum! Alumni discovered greater insights on Asia history through the heritage museum.

Alumni GO OUT (Asian Civilisations Museum)

25 May 2018 - Inaugural Science alumni industry networking session organised by the Faculty of Science, this time to BLOCK71 Singapore! To encourage professional networking among fellow alumni and keep alumni updated with industry news.

Science Alumni Industry Lunch (BLOCK71)

2 June 2017 - Coffee Appreciation Workshop. Single Mingle is a series of intimate workshops for alumni, it facilitates networking amongst alumni and help to deepen their connection with each other through meaningful activities.

Single Mingle

2 June 2018 - Over the weekends, alumni, friends, and family gathered for a parent-child baking class where the children nurtured his/ her creativity and confidence. All proceeds from this workshop go to FST Alumni Fund to support student study awards. Organized by NUS-Food Science & Technology Programme.

Family Baking workshop

2-3 Jun 2018 - NUS volunteers consisting of undergrads, alumni, and friends from NUS Toddycats, the Lee Kong Chian Natural History Museum, and the Department Biological Sciences worked together to actively share stories, training field trips, workshops about the natural history of Singapore, otters and marine trash at the annual Festival of Biodiversity. Organized by the National Parks Board and the Biodiversity Roundtable.

Festival of Biodiversity

9 June 2018 - Quarterly Alumni outdoor get together organised by the Faculty of Science, this time to VertiVegies! Alumni discovered greater insights on urban farming through Greenology founded by NUS Science Alumni, Mr Veera Sekaran.

Alumni GO OUT (VertiVegies)



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