14 citations · 19 across the 12 of their papers we have counts for
14 papers
Quantum synchronization in atom-cavity coupled systems
Katha Haldar, Anushree Dey, Saikat Ghosh +1
We consider a cavity quantum electrodynamics (CQED) setup where an ensemble of spin-1 atoms driven by a classical field interacts with two driven cavity field modes. We show that t…
A projection operator approach for ultracold bosons coupled to a cavity
Sarbarish Sen, Bimalendu Deb, K. Sengupta
We employ a projection operator technique to study the equilibrium phases and the non-equilibrium quench and ramp dynamics of ultracold bosons described by a two-dimensional (2D) B…
Enhanced quantum thermometry near a dissipative phase transition in a driven Kerr cavity
Chayan Purkait, Bimalendu Deb
We investigate quantum thermometry in a driven--dissipative Kerr cavity coupled to a thermal reservoir. The system exhibits a finite-size precursor of a dissipative phase transitio…
Controlling correlations of a polaritonic Luttinger liquid by engineered cross-Kerr nonlinearity
Nabaneet Sharma, Anushree Dey, Bimalendu Deb
We study correlation properties of polaritons at zero temperature in a multiconnected Jaynes--Cummings (MCJC) lattice on a superconducting circuit quantum electrodynamics platform…
Ion-atom two-qubit quantum gate based on phonon blockade
Subhra Mudli, Bimalendu Deb
We theoretically demonstrate the universal two-qubit CNOT gate between an ionic and an atomic qubit relying on Rydberg excitation of the atom and the resulting phonon blockade in t…
Rydberg atom parity gate based on dark state resonances
Sinchan Snigdha Rej, Snigdhadev Ray, Bimalendu Deb
Quantum computation (QC) and digital quantum simulation (DQS) essentially require two- or multi-qubit controlled-NOT or -phase gates. We propose an alternative pathway for QC and D…
Neutral-atom quantum computation using multi-qubit geometric gates via adiabatic passage
Sinchan Snigdha Rej, Bimalendu Deb
Adiabatic geometric phase gates offer enhanced robustness against fluctuations compared to con- ventional Rydberg blockade-based phase gates that rely on dynamical phase accumulati…
Toffoli and CNOT (n) gates in a neutral-atom platform using Rydberg coupling and dark state resonances
Sinchan Snigdha Rej, Bimalendu Deb
We propose a protocol for realizing a Toffoli gate using neutral-atom qubits in optical tweezers. Two ground-state hyperfine levels of the atoms are considered as qubit states. Our…
Dynamic structure factor of a driven-dissipative Bose-Hubbard model
Subhanka Mal, Anushree Dey, Kingshuk Adikary +1
Dynamic structure factor (DSF) is important for understanding excitations in many-body physics; it reveals information about the spectral and spatial correlations of fluctuations i…
Driven-dissipative fermionized topological phases of strongly interacting bosons
Arkajyoti Maity, Bimalendu Deb, Jan-Michael Rost
We study the optical response of a one-dimensional array of strongly nonlinear optical microcavities with alternating tunnel transmissivities, mimicking the paradigmatic Su-Schrief…
Ion-mediated interaction and controlled phase gate operation between two atomic qubits
Subhra Mudli, Subhanka Mal, Sinchan Snigdha Rej +2
We propose a toy model of ion-atom hybrid quantum system for quantum computing. We show that when two atomic qubits in two largely separated optical tweezers interact with a single…
Hyperradiance, photon blockade and concurrence in a pair of qubits inside a driven cavity
Anushree Dey, Bimalendu Deb
We theoretically study the radiance properties of a pair of qubits inside a single-mode cavity driven by a two-photon drive. Our results show that, when the two qubits are strongly…
Thermal effects in an imbalanced dipolar fermionic superfluid
Subhanka Mal, Hiranmaya Mishra, Prasanta K. Panigrahi +1
We investigate the temperature effects in an imbalanced superfluid atomic Fermi gas. We consider a bilayer system of two-component dipolar fermionic atoms with one layer containing…
Entangling Two Bose-Einstein Condensates by Stimulated Bragg Scattering
B. Deb, G. S. Agarwal
We propose an experiment for entangling two spatially separated Bose-Einstein condensates by Bragg scattering of light. When Bragg scattering in two condensates is stimulated by a…