118 citations · 182 across the 5 of their papers we have counts for
5 papers
Environmental noise spectroscopy with qubits subjected to dynamical decoupling
Piotr Szańkowski, Guy Ramon, Jan Krzywda +2
A qubit subjected to pure dephasing due to classical Gaussian noise can be turned into a spectrometer of this noise by utilizing its readout under properly chosen dynamical decoupl…
Quantum-enhanced interferometry and the structure of twisted states
K. Gietka, P. Szankowski, T. Wasak +1
Preparation of a non-classically correlated state is the first step of any quantum-enhanced interferometric protocol. An efficient method is the one-axis twisting, which entangles…
Interferometry with independently prepared Bose-Einstein condensates
T. Wasak, P. Szańkowski, J. Chwedeńczuk
We show that it is possible to reach the sub shot-noise sensitivity of the phase estimation using two independently prepared Bose-Einstein condensates as an input of an interferome…
Cauchy-Schwarz inequality and particle entanglement
T. Wasak, P. Szankowski, P. Zin +2
The Glauber-Sudarshan -representation is used in quantum optics to distinguish between semi-classical and genuinely quantum electromagnetic fields. We employ the analog of the $…
Parameter estimation in a memory-assisted noisy quantum interferometry
P. Szankowski, M. Trippenbach, J. Chwedenczuk
We demonstrate that memory in an -qubit system subjected to decoherence, is a potential resource for the slow-down of the entanglement decay. We show that this effect can be use…