activity
20202026
most citedImproving key rates of the unbalanced phase-encoded BB84 protocol using the flag-state squashing model

15 citations · 41 across the 8 of their papers we have counts for

collaborators

8 papers

quant-ph2026

Thermal Entanglement and Out-of-Equilibrium Thermodynamics in 1D Bose gases

Julia Mathé, Nicky Kai Hong Li, Pharnam Bakhshinezhad +1

We investigate entanglement in and out of equilibrium in a one-dimensional Bose gas in its low-energy Bogoliubov regime. In this Gaussian setting, the state is fully characterized…

quant-ph2026

High-dimensional quantum communication with scalable photonic entanglement in time and frequency

Kai-Chi Chang, Murat Can Sarihan, Nicky Kai Hong Li +13

High-dimensional photonic entanglement holds significant promise for advancing quantum communication, computation, and metrology. For example, large-alphabet quantum communication…

quant-ph2025★ 1 cited

Detecting genuine multipartite entanglement in multi-qubit devices with restricted measurements

Nicky Kai Hong Li, Xi Dai, Manuel H. Muñoz-Arias +3

Detecting genuine multipartite entanglement (GME) is a state-characterization task that benchmarks coherence and experimental control in quantum systems. Existing GME tests often r…

quant-ph2024★ 13 cited

High-dimensional entanglement witnessed by correlations in arbitrary bases

Nicky Kai Hong Li, Marcus Huber, Nicolai Friis

Certifying entanglement is an important step in the development of many quantum technologies, especially for higher-dimensional systems, where entanglement promises increased capab…

quant-ph2023★ 1 cited

Experimental high-dimensional entanglement certification and quantum steering with time-energy measurements

Kai-Chi Chang, Murat Can Sarihan, Paul Erker +8

High-dimensional entanglement provides unique ways of transcending the limitations of current approaches in quantum information processing, quantum communications based on qubits.…

quant-ph2023★ 2 cited

Identifying families of multipartite states with non-trivial local entanglement transformations

Nicky Kai Hong Li, Cornelia Spee, Martin Hebenstreit +2

The study of state transformations by spatially separated parties with local operations assisted by classical communication (LOCC) plays a crucial role in entanglement theory and i…

quant-ph2021★ 9 cited

State transformations within entanglement classes containing permutation-symmetric states

Martin Hebenstreit, Cornelia Spee, Nicky Kai Hong Li +2

The study of state transformations under local operations and classical communication (LOCC) plays a crucial role in entanglement theory. While this has been long ago characterized…

quant-ph2020★ 15 cited

Improving key rates of the unbalanced phase-encoded BB84 protocol using the flag-state squashing model

Nicky Kai Hong Li, Norbert Lütkenhaus

All phase-encoded BB84 implementations have signal states with unbalanced amplitudes in practice. Thus, the original security analyses a priori do not apply to them. Previous secur…