18 citations · 27 across the 11 of their papers we have counts for
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Post-Selection-Based Stochastic Quantum Battery
Aman Verma, Roson Nongthombam, Amarendra K. Sarma
Quantum batteries are quantum systems that store useful energy, which can be subsequently extracted to perform work. In this paper, we investigate the charging dynamics of the quan…
Nonlocal Magnonic Cat States in Hybrid Magnon-Qubit Architectures
Urmimala Dewan, Roson Nongthombam, Sampreet Kalita +1
The quantum superpositions of coherent states offer an alternative to the conventional qubit-based encodings by harnessing the large Hilbert space available in bosonic modes, inclu…
Fundamentals and Applications of Hybrid Electro- and Opto-mechanical system coupled to Superconducting Qubit: A Short Review
Roson Nongthombam, Urmimala Dewan, Amarendra K. Sarma
Superconducting qubits, realized by incorporating Josephson junctions into superconducting circuits, behave as artificial atoms with anharmonic energy spectra and can be precisely…
Entanglement Dynamics in a Two Transmon Qubit System under Continuous Measurement and Postselection
Roson Nongthombam, Amarendra K. Sarma
We investigate the role of continuous measurement and postselection in the dynamics and entanglement of a transmon-cavity-transmon coupled system. In the dispersive regime, charact…
Role of inefficient measurement in realizing post-selection-based non-Hermitian qubits
Roson Nongthombam, Aman Verma, Amarendra K. Sarma
Post-selecting against quantum jumps into the ground state confines the evolution of the three-level system to the excited states manifold, effectively realizing a PT-symmetric non…
Homodyne Measurement of a Non-Hermitian Qubit Undergoing Fluorescence
Roson Nongthombam, Amarendra K. Sarma
Implementation of a two-level non-Hermitian qubit via post-selection of a three-level system has been demonstrated. The post-selection procedure, which discards quantum jump to the…
A fluxonium qubit-based hybrid electromechanical system
Roson Nongthombam, Anshika Ranjan, Amarendra K. Sarma +1
Superconducting fluxonium qubits show a highly tunable energy-level structure, with transition frequencies spanning from a few MHz to few GHz. This range is well-aligned to the ope…
Generation of bipartite mechanical cat state by performing projective Bell state measurement
Roson Nongthombam, Urmimala Dewan, Amarendra K. Sarma
Quantum state preparation and measurement of photonic and phononic Schrödinger cat states have gathered significant interest due to their implications for alternative encoding sche…
Quantum transduction of superconducting qubit in electro-optomechanical and electro-optomagnonical system
Roson Nongthombam, Pooja Kumari Gupta, Amarendra K. Sarma
We study the quantum transduction of a superconducting qubit to an optical photon in electro-optomechanical and electro-optomagnonical systems. The electro-optomechanical system co…
Synchronization of a superconducting qubit to an optical field mediated by a mechanical resonator
Roson Nongthombam, Sampreet Kalita, Amarendra K. Sarma
We study the synchronization of a superconducting qubit to an external optical field via a mechanical resonator in a hybrid optoelectromechanical system. The quantum trajectory met…
Ground-State Cooling of a Mechanical Oscillator via a Hybrid Electro-Optomechanical System
Roson Nongthombam, Ambaresh Sahoo, Amarendra K. Sarma
We present a scheme for ground-state cooling of a mechanical resonator by simultaneously coupling it to a superconducting qubit and a cavity field. The Hamiltonian describing the h…