56 citations · 323 across the 11 of their papers we have counts for
14 papers · 1 filter
Quantum-classical diagnostics and Bohmian inequivalence for higher time-derivative Hamiltonians
Sanjib Dey, Andreas Fring
We develop a Bohmian analysis of a two-dimensional ghost Hamiltonian and its mapping to the degenerate Pais-Uhlenbeck model. Using Gaussian wavepackets, we derive the corresponding…
Improved coherence time of a non-Hermitian qubit in a -symmetric Environment
Duttatreya, Ipsika Mohanty, Sanjib Dey
Quantum computing's potential for exponential speedup is fundamentally limited by decoherence, a phenomenon arising from environmental interactions. Non-Hermitian quantum mechanics…
Enhanced quantum phase estimation with -deformed nonideal nonclassical light
Duttatreya, Sanjib Dey
We investigate quantum phase estimation in a Mach-Zehnder interferometer using q-deformed photon states, including q-coherent and q-cat states, which model realistic deviations fro…
An introductory review on resource theories of generalized nonclassical light
Sanjib Dey
Quantum resource theory is perhaps the most revolutionary framework that quantum physics has ever experienced. It plays vigorous roles in unifying the quantification methods of a r…
Generalized photon-subtracted squeezed vacuum states
Sanjib Dey, Sarika S. Nair
We construct a generalized version of the photon-subtracted squeezed vacuum states (PSSVS), which can be utilized to construct the same for nonlinear, deformed and any usual quantu…
Controlling decoherence via -symmetric non-Hermitian open quantum systems
Sanjib Dey, Aswathy Raj, Sandeep K. Goyal
We have studied the effect of a non-Hermitian Bosonic bath on the dynamics of a two-level spin system. The non-Hermitian Hamiltonian of the bath is chosen such that it converges to…