40 citations · 148 across the 12 of their papers we have counts for
12 papers
On the simulation of quantum multimeters
Andreas Bluhm, Leevi Leppäjärvi, Ion Nechita
In the quest for robust and universal quantum devices, the notion of simulation plays a crucial role, both from a theoretical and from an applied perspective. In this work, we go b…
Generating random Gaussian states
Leevi Leppäjärvi, Ion Nechita, Ritabrata Sengupta
We develop a method for the random sampling of (multimode) Gaussian states in terms of their covariance matrix, which we refer to as a random quantum covariance matrix (RQCM). We a…
Simple Information Processing Tasks with Unbounded Quantum Advantage
Teiko Heinosaari, Oskari Kerppo, Leevi Leppäjärvi +1
Communication scenarios between two parties can be implemented by first encoding messages into some states of a physical system which acts as the physical medium of the communicati…
Semi-device-independent certification of number of measurements
Isadora Veeren, Martin Plávala, Leevi Leppäjärvi +1
We develop a method for semi-device-independent certification of number of measurements. We achieve this by testing whether Bob's steering equivalent observables (SEO) can be simul…
Incompatibility of quantum instruments
Leevi Leppäjärvi, Michal Sedlák
Quantum instruments describe outcome probability as well as state change induced by measurement of a quantum system. Incompatibility of two instruments, i. e. the impossibility to…
Random access test as an identifier of nonclassicality
Teiko Heinosaari, Leevi Leppäjärvi
Random access codes are an intriguing class of communication tasks that reveal an operational and quantitative difference between classical and quantum information processing. We f…