79 citations · 529 across the 21 of their papers we have counts for
22 papers · 1 filter
Entropy bounds for device-independent quantum key distribution with local Bell test
Ernest Y. -Z. Tan, Ramona Wolf
One of the main challenges in device-independent quantum key distribution (DIQKD) is achieving the required Bell violation over long distances, as the channel losses result in low…
Security Proof for Variable-Length Quantum Key Distribution
Devashish Tupkary, Ernest Y. -Z. Tan, Norbert Lütkenhaus
We present a security proof for variable-length QKD in the Renner framework against IID collective attacks. Our proof can be lifted to coherent attacks using the postselection tech…
Memory effects in device-dependent and device-independent cryptography
Ernest Y. -Z. Tan
In device-independent cryptography, it is known that reuse of devices across multiple protocol instances can introduce a vulnerability against memory attacks. This is an introducto…
Robustness of implemented device-independent protocols against constrained leakage
Ernest Y. -Z. Tan
Device-independent (DI) protocols have experienced significant progress in recent years, with a series of demonstrations of DI randomness generation or expansion, as well as DI qua…
Quantum Chernoff divergence in advantage distillation for quantum key distribution and device-independent quantum key distribution
Mikka Stasiuk, Norbert Lütkenhaus, Ernest Y. -Z. Tan
Device-independent quantum key distribution (DIQKD) aims to mitigate adversarial exploitation of imperfections in quantum devices, by providing an approach for secret key distillat…
Lipschitz continuity of quantum-classical conditional entropies with respect to angular distance and related properties
Michael Liaofan Liu, Florian Kanitschar, Amir Arqand +1
We derive a Lipschitz continuity bound for quantum-classical conditional entropies with respect to angular distance, with a Lipschitz constant that is independent of the dimension…
Device-independent uncloneable encryption
Srijita Kundu, Ernest Y. -Z. Tan
Uncloneable encryption, first introduced by Broadbent and Lord (TQC 2020) is a quantum encryption scheme in which a quantum ciphertext cannot be distributed between two non-communi…
Security of device-independent quantum key distribution protocols: a review
Ignatius W. Primaatmaja, Koon Tong Goh, Ernest Y. -Z. Tan +3
Device-independent quantum key distribution (DI-QKD) is often seen as the ultimate key exchange protocol in terms of security, as it can be performed securely with uncharacterised…
Prospects for device-independent quantum key distribution
Ernest Y. -Z. Tan
Device-independent quantum key distribution (DIQKD) aims to achieve secure key distribution with only minimal assumptions, by basing its security on the violation of Bell inequalit…
Experimental quantum key distribution certified by Bell's theorem
D. P. Nadlinger, P. Drmota, B. C. Nichol +12
Cryptographic key exchange protocols traditionally rely on computational conjectures such as the hardness of prime factorisation to provide security against eavesdropping attacks.…
De Finetti Theorems for Quantum Conditional Probability Distributions with Symmetry
Sven Jandura, Ernest Y. -Z. Tan
The aim of device-independent quantum key distribution (DIQKD) is to study protocols that allow the generation of a secret shared key between two parties under minimal assumptions…
Fidelity Bounds for Device-Independent Advantage Distillation
Thomas A. Hahn, Ernest Y. -Z. Tan
It is known that advantage distillation (that is, information reconciliation using two-way communication) improves noise tolerances for quantum key distribution (QKD) setups. Two-w…
Improved DIQKD protocols with finite-size analysis
Ernest Y. -Z. Tan, Pavel Sekatski, Jean-Daniel Bancal +4
The security of finite-length keys is essential for the implementation of device-independent quantum key distribution (DIQKD). Presently, there are several finite-size DIQKD securi…
Composably secure device-independent encryption with certified deletion
Srijita Kundu, Ernest Y. -Z. Tan
We study the task of encryption with certified deletion (ECD) introduced by Broadbent and Islam (2020), but in a device-independent setting: we show that it is possible to achieve…
Device-independent quantum key distribution from generalized CHSH inequalities
P. Sekatski, J. -D. Bancal, X. Valcarce +3
Device-independent quantum key distribution aims at providing security guarantees even when using largely uncharacterised devices. In the simplest scenario, these guarantees are de…
A device-independent protocol for XOR oblivious transfer
Srijita Kundu, Jamie Sikora, Ernest Y. -Z. Tan
Oblivious transfer is a cryptographic primitive where Alice has two bits and Bob wishes to learn some function of them. Ideally, Alice should not learn Bob's desired function choic…
Noisy pre-processing facilitating a photonic realisation of device-independent quantum key distribution
M. Ho, P. Sekatski, E. Y. -Z. Tan +3
Device-independent quantum key distribution provides security even when the equipment used to communicate over the quantum channel is largely uncharacterized. An experimental demon…
Device-Independent Quantum Key Distribution with Random Key Basis
Rene Schwonnek, Koon Tong Goh, Ignatius W. Primaatmaja +4
Device-independent quantum key distribution (DIQKD) is the art of using untrusted devices to distribute secret keys in an insecure network. It thus represents the ultimate form of…
Computing secure key rates for quantum key distribution with untrusted devices
Ernest Y. -Z. Tan, René Schwonnek, Koon Tong Goh +2
Device-independent quantum key distribution (DIQKD) provides the strongest form of secure key exchange, using only the input-output statistics of the devices to achieve information…
Advantage distillation for device-independent quantum key distribution
Ernest Y. -Z. Tan, Charles C. -W. Lim, Renato Renner
We derive a sufficient condition for advantage distillation to be secure against collective attacks in device-independent quantum key distribution (DIQKD), focusing on the repetiti…
Measurement-dependent locality beyond i.i.d
Ernest Y. -Z. Tan, Yu Cai, Valerio Scarani
When conducting a Bell test, it is normal to assume that the preparation of the quantum state is independent of the measurements performed on it. Remarkably, the violation of local…
Entanglement witness via symmetric two-body correlations
Ernest Y. -Z. Tan, Dagomir Kaszlikowski, L. C. Kwek
We construct an entanglement witness for many-qubit systems, based on symmetric two-body correlations with two measurement settings. This witness is able to detect the entanglement…