302 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Indian Institute of Science Education and Research MohaliIN223 papers
- Indian Institute of Science Education and Research KolkataIN203 papers
- Rutherford Appleton LaboratoryGB194 papers
- Indian Institute of Science Education and Research, TirupatiIN191 papers
- Tata Institute of Fundamental ResearchIN191 papers
- Indian Institute of Science Education and Research BerhampurIN190 papers
- Texas A&M UniversityUS185 papers
- Purdue University West LafayetteUS184 papers
- Panjab UniversityIN183 papers
- Tsinghua UniversityCN183 papers
- Wayne State UniversityUS183 papers
- Eötvös Loránd UniversityHU182 papers
47 papers · 1 filter
Statistical mechanics from quantum envariance and exchange symmetry
Amul Ojha, Shubhit Sardana, Arnab Ghosh
We build on the foundational work of Deffner and Zurek [S. Deffner and W. H. Zurek, New J. Phys. 18, 063013 (2016)] to show how central equilibrium structures of statistical mechan…
Sensing Electric Currents in an a-IGZO TFT-Based Circuit Using a Quantum Diamond Microscope
Mayana Yousuf Ali Khan, Pralekh Dubey, Lakshmi Madhuri P +3
The Quantum Diamond Microscope (QDM) is an emerging magnetic imaging tool enabling noninvasive characterization of electronic circuits through spatially mapping current densities.…
Excitation-pulse intensity mediated control of coherent nonlinear optical response of a V-type system
Rishabh Tripathi, Krishna K. Maurya, Rohan Singh
V-type three-level systems, where two excited states share a common ground state, serve as fundamental models for exploring coherent light-matter interactions in a range of quantum…
Magnetic field orientation dependence of continuous-wave optically detected magnetic resonance with nitrogen-vacancy ensembles
Pralekh Dubey, Shashank Kumar, Chinmaya Singh +5
Continuous-wave optically detected magnetic resonance (CW-ODMR) measurements with nitrogen-vacancy (NV) spins in diamond are used for sensing DC magnetic fields from nearby magneti…
Quantum network tomography of Rydberg arrays by machine learning
Kaustav Mukherjee, Johannes Schachenmayer, Shannon Whitlock +1
Configurable arrays of optically trapped Rydberg atoms are a versatile platform for quantum computation and quantum simulation, also allowing controllable decoherence. We demonstra…
Photonic Simulation of Localization Phenomena Using Boson Sampling
Anuprita V. Kulkarni, Vatsana Tiwari, Auditya Sharma +1
Quantum simulation in its current state faces experimental overhead in terms of physical space and cooling. We propose boson sampling as an alternative compact synthetic platform p…
Family of Exact and Inexact Quantum Speed Limits for Completely Positive and Trace-Preserving Dynamics
Abhay Srivastav, Vivek Pandey, Brij Mohan +1
Traditional quantum speed limits formulated in density matrix space are generally unattainable for a wide class of dynamics and it is difficult to characterize the fastest possible…
Causal and Non-Causal Revivals of Information: A New Regime of Non-Markovianity in Quantum Stochastic Processes
Francesco Buscemi, Rajeev Gangwar, Kaumudibikash Goswami +5
The study of information revivals, witnessing the violation of certain data-processing inequalities, has provided an important paradigm in the study of non-Markovian quantum stocha…
Coherent heat transfer leads to genuine quantum enhancement in the performances of continuous engines
Brij Mohan, Rajeev Gangwar, Tanmoy Pandit +3
Conventional continuous quantum heat engines with incoherent heat transfer perform poorly as they exploit two-body interactions between the system and hot or cold baths, thus havin…
Financial Fraud Detection using Quantum Graph Neural Networks
Nouhaila Innan, Abhishek Sawaika, Ashim Dhor +7
Financial fraud detection is essential for preventing significant financial losses and maintaining the reputation of financial institutions. However, conventional methods of detect…
Excitons guided by polaritons
K. Mukherjee, S. Wüster
We show that an exciton on a discrete chain of sites can be guided by effective measurements induced by an ambient, non-equilibrium medium that is synchronised to the exciton trans…
Phase transitions of the anisotropic Dicke model
Pragna Das, Devendra Singh Bhakuni, Auditya Sharma
We systematically analyze the various phase transitions of the anisotropic Dicke model that is endowed with both rotating and counter-rotating light-matter couplings. In addition t…
Quantum Approximation Optimization Algorithm for the Trellis based Viterbi Decoding of Classical Error Correcting Codes
Mainak Bhattacharyya, Ankur Raina
We construct a hybrid quantum-classical Viterbi decoder for the classical error-correcting codes. Viterbi decoding is a trellis-based procedure for maximum likelihood decoding of c…
Maximally entangled Rydberg-atom pairs via Landau-Zener sweeps
Dhiya Varghese, Sebastian Wüster, Weibin Li +1
We analyze the formation of maximally entangled Rydberg atom pairs subjected to Landau-Zener sweeps of the atom-light detuning. Though the populations reach a steady value at longe…
Entanglement Purification with Quantum LDPC Codes and Iterative Decoding
Narayanan Rengaswamy, Nithin Raveendran, Ankur Raina +1
Recent constructions of quantum low-density parity-check (QLDPC) codes provide optimal scaling of the number of logical qubits and the minimum distance in terms of the code length,…
High-resolution spectroscopy of a single nitrogen-vacancy defect at zero magnetic field
Shashank Kumar, Pralekh Dubey, Sudhan Bhadade +3
We report a study of high-resolution microwave spectroscopy of nitrogen-vacancy centers in diamond crystals at and around zero magnetic field. We observe characteristic splitting a…
Dynamics of atoms within atoms
S. Tiwari, F. Engel, M. Wagner +3
Recent experiments with Bose-Einstein condensates have entered a regime in which thousands of ground-state condensate atoms fill the Rydberg-electron orbit. After the excitation of…
Finite Rate QLDPC-GKP Coding Scheme that Surpasses the CSS Hamming Bound
Nithin Raveendran, Narayanan Rengaswamy, Filip Rozpędek +3
Quantum error correction has recently been shown to benefit greatly from specific physical encodings of the code qubits. In particular, several researchers have considered the indi…
Trapping and binding by dephasing
Kaustav Mukherjee, Siddhartha Poddar, Sebastian Wüster
The binding and trapping of particles usually rely on conservative forces, described by unitary quantum dynamics. We show that both can also arise solely from spatially dependent d…
Fano Resonances in Quantum Transport with Vibrations
Ajith Ramachandran, Michael Genkin, Auditya Sharma +3
Quantum mechanical scattering involving continuum states coupled to a scatterer with a discrete spectrum gives rise to Fano resonances. Here we consider scatterers that possess int…
Imaging the interface of a qubit and its quantum-many-body environment
S. Rammohan, S. Tiwari, A. Mishra +5
Decoherence affects all quantum systems, natural or artificial, and is the primary obstacle impeding quantum technologies. We show theoretically that for a Rydberg qubit in a Bose…
Population trapping in a pair of periodically driven Rydberg atoms
S. Kumar Mallavarapu, Ankita Niranjan, Weibin Li +2
We study the population trapping extensively in a periodically driven Rydberg pair. The periodic modulation of the atom-light detuning effectively suppresses the Rabi couplings and…
A measure for adiabatic contributions to quantum transitions
R. Pant, P. K. Verma, C. Rangi +4
We construct a measure for the adiabatic contribution to quantum transitions in an arbitrary basis, tackling the generic complex case where dynamics is only partially adiabatic, si…
Dynamical tunnelling of a Nano-mechanical Oscillator
Piyush Jangid, Anil Kumar Chauhan, Sebastian Wüster
The study of the quantum to classical transition is of fundamental as well as technological importance, and focusses on mesoscopic devices, with a size for which either classical p…