29 citations · 187 across the 35 of their papers we have counts for
36 papers
Poisson-shot-noise hybrid machines: efficiency and quasistatic divergence
Rita Majumdar, Costantino Di Bello, Ralf Metzler +2
We study stochastic models of a microscopic active heat engine, comprised of an overdamped Brownian particle trapped in a harmonic potential, and in simultaneous contact with therm…
Noise-aware selection of circuit cutting strategies under hardware noise non-uniformity
Debarthi Pal, Ritajit Majumdar, Padmanabha Venkatagiri Seshadri +2
Noise in contemporary quantum hardware is highly non-uniform across qubits and couplers, giving rise to localized low-noise "islands" within otherwise noisy device topologies. As q…
Observation of Robust and Coherent Non-Abelian Hadron Dynamics on Noisy Quantum Processors
Fran Ilčić, Ritajit Majumdar, Emil Mathew +3
The real-time evolution of strongly interacting matter remains a frontier of fundamental physics, as classical simulations are hampered by exponential Hilbert space growth and rapi…
Basis Adaptive Algorithm for Quantum Many-Body Systems on Quantum Computers
Anutosh Biswas, Sayan Ghosh, Ritajit Majumdar +3
We introduce a Basis Adaptive (BA) algorithm for hybrid quantum-classical simulation of correlated quantum many-body systems. Starting from a small set of physically motivated bits…
Low overhead circuit cutting with operator backpropagation
Debarthi Pal, Ritajit Majumdar
Current quantum computers suffer from noise due to lack of error correction. Several techniques to mitigate the effect of noise have been studied, in particular to extract the expe…
Lightweight Targeted Estimation of Layout Noise in a Quantum Computer using Quality Indicator Circuits
Shikhar Srivastava, Ritajit Majumdar, Padmanabha Venkatagiri Seshadri +2
Minimizing noise is essential for reliably executing quantum circuits on the current generation of hardware. The mapping of an abstract quantum circuit to the physical layout of th…
Resource-aware scheduling of multiple quantum circuits on a hardware device
Debasmita Bhoumik, Ritajit Majumdar, Susmita Sur-Kolay
Recent quantum technologies and quantum error-correcting codes emphasize the requirement for arranging interacting qubits in a nearest-neighbor (NN) configuration while mapping a q…
Diagonalization of large many-body Hamiltonians on a quantum processor
Nobuyuki Yoshioka, Mirko Amico, William Kirby +16
The estimation of low energies of many-body systems is a cornerstone of computational quantum sciences. Variational quantum algorithms can be used to prepare ground states on pre-f…
Brownian particle in a Poisson-shot-noise active bath: exact statistics, effective temperature, and inference
Costantino Di Bello, Rita Majumdar, Rahul Marathe +2
We study the dynamics of an overdamped Brownian particle in a thermal bath that contains a dilute solution of active particles. The particle moves in a harmonic potential and exper…
Distributed Scheduling of Quantum Circuits with Noise and Time Optimization
Debasmita Bhoumik, Ritajit Majumdar, Amit Saha +1
Quantum computers are currently noisy, particularly without error correction and fault tolerance. Methods like error suppression and mitigation are widely used to improve performan…
Best practices for quantum error mitigation with digital zero-noise extrapolation
Ritajit Majumdar, Pedro Rivero, Friederike Metz +2
Digital zero-noise extrapolation (dZNE) has emerged as a common approach for quantum error mitigation (QEM) due to its conceptual simplicity, accessibility, and resource efficiency…
Parallelizing Quantum-Classical Workloads: Profiling the Impact of Splitting Techniques
Tuhin Khare, Ritajit Majumdar, Rajiv Sangle +3
Quantum computers are the next evolution of computing hardware. Quantum devices are being exposed through the same familiar cloud platforms used for classical computers, and enabli…
On Fault Tolerance of Circuits with Intermediate Qutrit-assisted Gate Decomposition
Ritajit Majumdar, Amit Saha, Amlan Chakrabarti +1
The use of a few intermediate qutrits for efficient decomposition of 3-qubit unitary gates has been proposed, to obtain an exponential reduction in the depth of the decomposed circ…
Error mitigated quantum circuit cutting
Ritajit Majumdar, Christopher J. Wood
We investigate an error mitigated tomographic approach to the quantum circuit cutting problem in the presence of gate and measurement noise. We explore two tomography specific erro…
Efficient Syndrome Decoder for Heavy Hexagonal QECC via Machine Learning
Debasmita Bhoumik, Ritajit Majumdar, Dhiraj Madan +3
Error syndromes for heavy hexagonal code and other topological codes such as surface code have typically been decoded by using Minimum Weight Perfect Matching (MWPM) based methods.…
Thermal relaxation error on QKD: Effect and A Probable Bypass
Munsi Afif Aziz, Bishwajit Prasad Gond, Srijita Nandi +3
Quantum cryptography was proposed as a counter to the capacity of quantum computers to break classical cryptosystems. A broad subclass of quantum cryptography, called quantum key d…
Exactly solvable model of a passive Brownian heat engine and its comparison with active engines
Rita Majumdar, Arnab Saha, Rahul Marathe
We perform an extensive analysis of passive as well as active micro-heat engines with different single-particle stochastic models. Using stochastic thermodynamics we calculate ther…
Surface Code Design for Asymmetric Error Channels
Utkarsh Azad, Aleksandra Lipińska, Shilpa Mahato +3
Surface codes are quantum error correcting codes normally defined on 2D arrays of qubits. In this paper, we introduce a surface code design based on the fact that the severity of b…
Efficient Decoding of Surface Code Syndromes for Error Correction in Quantum Computing
Debasmita Bhoumik, Pinaki Sen, Ritajit Majumdar +3
Errors in surface code have typically been decoded by Minimum Weight Perfect Matching (MWPM) based method. Recently, neural-network-based Machine Learning (ML) techniques have been…
Depth Optimized Ansatz Circuit in QAOA for Max-Cut
Ritajit Majumdar, Debasmita Bhoumik, Dhiraj Madan +3
While a Quantum Approximate Optimization Algorithm (QAOA) is intended to provide a quantum advantage in finding approximate solutions to combinatorial optimization problems, noise…
Faster Search of Clustered Marked States with Lackadaisical Quantum Walks
Amit Saha, Ritajit Majumdar, Debasri Saha +2
The nature of discrete-time quantum walk in the presence of multiple marked states has been studied by Nahimovs and Rivosh. They introduced an exceptional configuration of clustere…
Prediction of the final rank of Players in PUBG with the optimal number of features
Diptakshi Sen, Rupam Kumar Roy, Ritajit Majumdar +2
PUBG is an online video game that has become very popular among the youths in recent years. Final rank, which indicates the performance of a player, is one of the most important fe…
Optimizing Ansatz Design in QAOA for Max-cut
Ritajit Majumdar, Dhiraj Madan, Debasmita Bhoumik +3
Quantum Approximate Optimization Algorithm (QAOA) is studied primarily to find approximate solutions to combinatorial optimization problems. For a graph with vertices and e…
Quantum Secure Direct Communication with Mutual Authentication using a Single Basis
Nayana Das, Goutam Paul, Ritajit Majumdar
In this paper, we propose a new theoretical scheme for quantum secure direct communication (QSDC) with user authentication. Different from the previous QSDC protocols, the present…