Science Cafe

ENTANGLEMENT

14th April 2023

World Quantum Day @ Science Centre Singapore with collaboration from Centre for Quantum Technologies (CQT). 

Quantum entanglement is when particles exist in a shared state transcending any distance between them. How does one distant particle instantly affect another particle? 

Try out CQT’s table-top apparatus to create entanglement between photons (particles of light) and measure a violation of Bell’s inequality – an experiment that confirms the presence of entanglement. 

Stay for a sumptuous dinner with CQT scientists at Stellar Kitchen Bar and learn more about the quantum world from experts in the field. There will also be a screening from CQT’s Quantum Shorts film festival.

Please note that the evening programme is for ages 18 and above only.    
Get your tickets now!

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Prasanna Sellathurai

Director of ‘Missed Call’

Missed Call

Organised by CQT and supported by international partners, the Quantum Shorts contest series has alternated between calls for science fiction and science films since 2012.
The short films give different takes on quantum physics - dancers performing an interpretation of the observer effect, abstract audio-visual pieces probing space and time, and the many-worlds interpretation made into quantum comedy, among others. 

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Zaw Lin Htoo, Pooja Jayachandran, Peter Sidajaya

PhD students, CQT, NUS

Why don’t you know Bell’s Theorem?

In 1964, John Bell’s argument proved that all the weirdness and indeterminism of quantum physics is the new normal. Any hopes of returning to a predictable classical world have been completely dashed. It’s not that quantum theory is complicated, waiting for a new genius to explain things better: it’s nature itself that behaves in a counter-intuitive way. The proof of Bell’s theorem is very simple—it requires nothing more than knowing:

• 1+1=2
• 1-1=0
• The average of a sum is the sum of the averages.

We are sure you know that. So, why don’t you know Bell’s Theorem?

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Christian Kurtsiefer, Professor and Principal Investigator, CQT, NUS & 

Poh Hou Shun, Senior Research Fellow, CQT, NUS

Experiment with Photons and Witness Entanglement

Guests will be invited to try out CQT’s table-top apparatus to create entanglement between photons (particles of light) and measure for themselves a violation of Bell’s inequality – an experiment that confirms the presence of entanglement. The scientists who first carried out such experiments were recognised with the Nobel Prize in Physics 2022. We will present certificates to experimenters who achieve entanglement at this event.