79 citations · 437 across the 19 of their papers we have counts for
19 papers
Loss-Tolerant Quantum Position Verification for Metropolitan Area Networks
Wen Yu Kon, Niccolò Bigagli, Andrew Conrad +13
A spacetime seal, a cryptographic guarantee that a digital event has occurred at an approved location and time, can augment a digital signature with location attestation for legal,…
Certified randomness amplification by dynamically probing remote random quantum states
Minzhao Liu, Pradeep Niroula, Matthew DeCross +49
Cryptography depends on truly unpredictable numbers, but physical sources emit biased or correlated bits. Quantum mechanics enables the amplification of imperfect randomness into n…
Device-Independent Private Quantum Randomness Beacon
Ignatius William Primaatmaja, Hong Jie Ng, Koon Tong Goh
Device-independent quantum random number generation (DIQRNG) is the gold standard for generating truly random numbers, as it can produce certifiably random numbers from untrusted d…
Efficient Multi-basis Quantum Position Verification Secure against Generalized Adversaries
Wen Yu Kon, Ignatius William Primaatmaja, Kaushik Chakraborty +1
Quantum position verification (QPV) enables multiple verifiers to certify a prover's location using quantum communication and physical assumptions. With experimental demonstrations…
Self-testing quantum randomness expansion on an integrated photonic chip
Gong Zhang, Ignatius William Primaatmaja, Yue Chen +7
The power of quantum random number generation is more than just the ability to create truly random numbers$\unicode{x2013}$it can also enable self-testing, which allows the user to…
Discrete-modulated continuous-variable quantum key distribution secure against general attacks
Ignatius William Primaatmaja, Wen Yu Kon, Charles Lim
In recent years, discrete-modulated continuous-variable quantum key distribution (DM-CV-QKD) has gained traction due to its practical advantages: cost-effectiveness, simple state p…
Sampled sub-block hashing for large input randomness extraction
Hong Jie Ng, Wen Yu Kon, Ignatius William Primaatmaja +2
Randomness extraction is an essential post-processing step in practical quantum cryptography systems. When statistical fluctuations are taken into consideration, the requirement of…
Provably-secure quantum randomness expansion with uncharacterised homodyne detection
Chao Wang, Ignatius William Primaatmaja, Hong Jie Ng +5
Quantum random number generators (QRNGs) are able to generate numbers that are certifiably random, even to an agent who holds some side-information. Such systems typically require…
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…
Discrete-variable quantum key distribution with homodyne detection
Ignatius William Primaatmaja, Cassey Crystania Liang, Gong Zhang +3
Most quantum key distribution (QKD) protocols can be classified as either a discrete-variable (DV) protocol or continuous-variable (CV) protocol, based on how classical information…
Estimating the photon-number distribution of photonic channels with realistic devices and applications in photonic quantum information processing
Emilien Lavie, Ignatius William Primaatmaja, Wen Yu Kon +2
Characterising the input-output photon-number distribution of an unknown optical quantum channel is an important task for many applications in quantum information processing. Ideal…
Optimal single-shot discrimination of optical modes
Ignatius William Primaatmaja, Asaph Ho, Valerio Scarani
Retrieving classical information encoded in optical modes is at the heart of many quantum information processing tasks, especially in the field of quantum communication and sensing…
Securing practical quantum communication systems with optical power limiters
Gong Zhang, Ignatius William Primaatmaja, Jing Yan Haw +3
Controlling the energy of unauthorized light signals in a quantum cryptosystem is an essential criterion for implementation security. Here, we propose a passive optical power limit…
Loss-tolerant quantum key distribution with a twist
J. Eli Bourassa, Ignatius William Primaatmaja, Charles Ci Wen Lim +1
The security of measurement device-independent quantum key distribution (MDI QKD) relies on a thorough characterization of one's optical source output, especially any noise in the…
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…
Versatile security analysis of measurement-device-independent quantum key distribution
Ignatius William Primaatmaja, Emilien Lavie, Koon Tong Goh +2
Measurement-device-independent quantum key distribution (MDI-QKD) is the only known QKD scheme that can completely overcome the problem of detection side-channel attacks. Yet, desp…
Characterising the correlations of prepare-and-measure quantum networks
Yukun Wang, Ignatius William Primaatmaja, Emilien Lavie +2
Prepare-and-measure (P&M) quantum networks are the basic building blocks of quantum communication and cryptography. These networks crucially rely on non-orthogonal quantum encoding…
Experimental unconditionally secure covert communication in dense wavelength-division multiplexing networks
Yang Liu, Juan Miguel Arrazola, Wen-Zhao Liu +8
Covert communication offers a method to transmit messages in such a way that it is not possible to detect that the communication is happening at all. In this work, we report an exp…