no code implementations • 12 Dec 2023 • Mintu Nandi, Sudip Chattopadhyay, Somshubhro Bandyopadhyay, Suman K Banik
We present a theoretical framework for noise propagation in a generic two-step cascade (S$\rightarrow$X$\rightarrow$Y) in terms of intrinsic and extrinsic noise.
no code implementations • 29 Oct 2020 • Pratapaditya Bej, Arkaprabha Ghosal, Debarshi Das, Arup Roy, Somshubhro Bandyopadhyay
We study information-disturbance trade-off in generalized entanglement swapping protocols wherein starting from Bell pairs $\left(1, 2\right)$ and $\left(3, 4\right)$, one performs an arbitrary joint measurement on $\left(2, 3\right)$, so that $\left(1, 4\right)$ now becomes correlated.
Quantum Physics
1 code implementation • 14 Jun 2018 • Margherita Zuppardo, Ray Ganardi, Marek Miller, Somshubhro Bandyopadhyay, Tomasz Paterek
We characterise non-selective global projective measurements capable of increasing quantum entanglement between two particles.
Quantum Physics
no code implementations • 29 Aug 2014 • Somshubhro Bandyopadhyay, Alessandro Cosentino, Nathaniel Johnston, Vincent Russo, John Watrous, Nengkun Yu
We prove limitations on LOCC and separable measurements in bipartite state discrimination problems using techniques from convex optimization.
Quantum Physics
