269 citations · 3k across the 72 of their papers we have counts for
6 papers · 1 filter
Impossibility of bosonic autonomous entanglement engines in the weak-coupling limit
Bradley Longstaff, Michael G. Jabbour, Jonatan Bohr Brask
Entanglement is a fundamental feature of quantum physics and a key resource for quantum communication, computing and sensing. Entangled states are fragile and maintaining coherence…
Quantum Repeater using Two-Mode Squeezed States and Atomic Noiseless Amplifiers
Anders J. E. Bjerrum, Jonatan B. Brask, Jonas S. Neergaard-Nielsen +1
We perform a theoretical investigation into how a two-mode squeezed vacuum state, that has undergone photon loss, can be stored and purified using noiseless amplification with a co…
Quantum randomness certification with untrusted measurements and few probe states
Makoto Ishihara, Carles Roch i Carceller, Kieran Neil Wilkinson +3
We present a scheme for semi-device-independent quantum randomness certification from an untrusted measurement device and a trusted source and demonstrate it experimentally. No ass…
Constructing local models for general measurements on bosonic Gaussian states
Michael G. Jabbour, Jonatan Bohr Brask
We derive a simple sufficient criterion for the locality of correlations obtained from given measurements on a Gaussian quantum state. The criterion is based on the construction of…
Maximum confidence measurement for qubit states
Hanwool Lee, Kieran Flatt, Carles Roch i Carceller +2
In quantum state discrimination, one aims to identify unknown states from a given ensemble by performing measurements. Different strategies such as minimum-error discrimination or…
Persistent nonlocality in an ultracold-atom environment
Bradley Longstaff, Jonatan Bohr Brask
We investigate nonlocal quantum correlations arising between multiple two-level impurity atoms coupled to an ultracold bosonic gas. We find that the environment-induced dynamics of…