78 citations · 239 across the 21 of their papers we have counts for
6 papers · 1 filter
Error estimation of different schemes to measure spin-squeezing inequalities
Jan Lennart Bönsel, Satoya Imai, Ye-Chao Liu +1
How can we analyze quantum correlations in large and noisy systems without quantum state tomography? An established method is to measure total angular momenta and employ the so-cal…
Geometry of two-body correlations in three-qubit states
Shravan Shravan, Simon Morelli, Otfried Gühne +1
We study restrictions of two-body correlations in three-qubit states, using three local-unitarily invariant coordinates based on the Bloch vector lengths of the marginal states. Fi…
Collective randomized measurements in quantum information processing
Satoya Imai, Géza Tóth, Otfried Gühne
The concept of randomized measurements on individual particles has proven to be useful for analyzing quantum systems and is central for methods like shadow tomography of quantum st…
Experimental verification of bound and multiparticle entanglement with the randomized measurement toolbox
Chao Zhang, Yuan-Yuan Zhao, Nikolai Wyderka +10
In recent years, analysis methods for quantum states based on randomized measurements have been investigated extensively. Still, in the experimental implementations these methods w…
Quantum speed limit for states and observables of perturbed open systems
Benjamin Yadin, Satoya Imai, Otfried Gühne
Quantum speed limits provide upper bounds on the rate with which a quantum system can move away from its initial state. Here, we provide a different kind of speed limit, describing…
Analysing quantum systems with randomised measurements
Paweł Cieśliński, Satoya Imai, Jan Dziewior +6
Measurements with randomly chosen settings determine many important properties of quantum states without the need for a shared reference frame or calibration. They naturally emerge…