18 citations · 41 across the 10 of their papers we have counts for
8 papers · 1 filter
Distributed Phase Sensing with Multiphoton States in Optical Interferometry
Subhrajit Modak, Danilo Triggiani, Cosmo Lupo
We investigate interferometric phase-estimation using separable photon inputs that evolve into number-path entangled states through linear optical networks, followed by photon-numb…
Large baseline quantum telescopes assisted by partially distinguishable photons
Subhrajit Modak, Pieter Kok
Quantum entanglement can be used to extend the baseline of telescope arrays in order to increase the spatial resolution. In one proposal by Marchese and Kok [Phys. Rev. Lett. 130,…
Bounding Quantum Advantages in Postselected Metrology
Sourav Das, Subhrajit Modak, Manabendra Nath Bera
Weak value amplification and other postselection-based metrological protocols can enhance precision while estimating small parameters, outperforming postselection-free protocols. I…
Extraction of Product and Higher Moment Weak Values: Applications in Quantum State Reconstruction and Entanglement Detection
Sahil, Sohail, Subhrajit Modak +2
Weak measurements introduced by Aharonov, Albert and Vaidman (AAV) can provide informations about the system with minimal back action. Weak values of product observables (commuting…
PT-Symmetry and Supersymmetry: Interconnection of Broken and Unbroken Phases
Adipta Pal, Subhrajit Modak, Aradhya Shukla +1
The broken and unbroken phases of PT and supersymmetry in optical systems are explored for a complex refractive index profile in the form of a Scarf potential, under the framework…
Exploring Branched Hamiltonians for a Class of Nonlinear Systems
Bijan Bagchi, Subhrajit Modak, Prasanta K. Panigrahi +2
One of the less well understood ambiguities of quantization is emphasized to result from the presence of higher-order time derivatives in the Lagrangians resulting in multiple-valu…
A study of PT-symmetric Non-linear Schroedinger Equation
K. Nireekshan Reddy, Subhrajit Modak, Kumar Abhinav +1
Systems governed by the Non-linear Schroedinger Equation (NLSE) with various external PT-symmetric potentials are considered. Exact solutions have been obtained for the same throug…
Tracking down localized modes in PT-symmetric Hamiltonians under the influence of a competing nonlinearity
Bijan Bagchi, Subhrajit Modak, Prasanta K. Panigrahi
The relevance of parity and time reversal (PT)-symmetric structures in optical systems is known for sometime with the correspondence existing between the Schrodinger equation and t…