517 citations · 2.9k across the 34 of their papers we have counts for
7 papers · 1 filter
Daylight operation of a free space, entanglement-based quantum key distribution system
Matthew P. Peloso, Ilja Gerhardt, Caleb Ho +2
Many quantum key distribution (QKD) implementations using a free space transmission path are restricted to operation at night time in order to distinguish the signal photons used f…
Accuracy of minimal and optimal qubit tomography for finite-length experiments
Alex Ling, Antia Lamas-Linares, Christian Kurtsiefer
Practical quantum state tomography is usually performed by carrying out repeated measurements on many copies of a given state. The accuracy of the reconstruction depends strongly o…
Experimental quantum key distribution based on a Bell test
Alexander Ling, Matthew P. Peloso, Ivan Marcikic +3
We report on a complete free-space field implementation of a modified Ekert91 protocol for quantum key distribution using entangled photon pairs. For each photon pair we perform a…
Wigner tomography of two qubit states and quantum cryptography
T. Durt, A. Lamas-Linares, A. Ling +1
Tomography of the two qubit density matrix shared by Alice and Bob is an essential ingredient for guaranteeing an acceptable margin of confidentiality during the establishment of a…
Sagnac-loop phase shifter with polarization-independent operation
Tien Tjuen Ng, Darwin Gosal, Antia Lamas-Linares +1
A bulk-optics, polarization-independent phase shifter for photonic quantum information applications is demonstrated. A transverse mode electro-optic modulator using lithium niobate…
Testing quantum correlations versus single-particle properties within Leggett's model and beyond
Cyril Branciard, Nicolas Brunner, Nicolas Gisin +4
Quantum theory predicts and experiments confirm that nature can produce correlations between distant events that are nonlocal in the sense of violating a Bell inequality. Neverthel…