14 citations · 19 across the 12 of their papers we have counts for
9 papers · 1 filter
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…
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…
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…
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…