Varia
Odds and ends, newest first.
For the technical papers, see my Google Scholar profile.
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This Sentence Is False
Puzzles and meta-puzzles chewed over with Kwek across the years in Singapore, mostly over dinner at one hawker stall or another. Solutions provided; no peeking.
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The Island That Sailed Away
An illustrated account of an island adrift — and of the singular world that evolved once it was on its own.
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“You can’t cheat physics”
Why only physics-based cryptography can offer future-proof security.
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How Albert Einstein and John Bell inspired quantum cryptography
From the EPR paradox and Bell’s theorem to entanglement-based quantum key distribution.
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Ask me anything: “Nature doesn’t know that we divided all phenomena into physics, chemistry and biology”
On careers, crossing disciplinary borders, and connecting ideas.
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Royal Society Milner Award and Lecture 2023
For pioneering contributions to quantum communication and computation.
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Cryptoreality
A long conversation on intuition, the history of cryptography from antiquity to today, and quantum information science.
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Micius Quantum Prize 2019
Shared for pioneering work on quantum key distribution.
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Interview at the launch of Atos Quantum
A short interview on quantum technologies.
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The ultimate physical limits of privacy
A perspective on device-independent cryptography: privacy that can be guaranteed even with untrusted devices, given free choice.
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Beyond the Quantum Horizon
An essay arguing that quantum theory expands, rather than limits, what can be known and computed; selected for The Best American Science and Nature Writing 2013.
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Less Reality, More Security
How the violation of Bell inequalities makes cryptography secure even when the devices themselves cannot be trusted.
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Complex and Unpredictable Cardano
A historical essay on the Renaissance polymath whose complex numbers and games of chance underpin quantum amplitudes and probability.
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Cracking Codes, Part II
The sequel: public-key cryptography, Shor's algorithm and quantum key distribution for a general audience.
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Cracking Codes, Part I
A tour through the history of codes and code-breaking, from substitution ciphers to quantum cryptography.