QUANTUM
INFORMATION AND QUANTUM SIMULATIONS  IMSc


PUBLICATIONS
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Patents

Quantum illumination and estimation of object reflectivty using polarizationentangled photon pairs
Kanad Sengupta, K. Muhammed Shafi, Soumya Asokan, C. M. Chandrashekar
Indian Patent Application No 202441011695 Filed on 20 February 2024

Quantum lidar using polarizationpath entangled single photons
K. Muhammed Shafi, C. M. Chandrashekar
Indian Patent App. Number : 202341085278, filed on 13 December 2023

System for generating highrate quantum random numbers from pathentangled single photons
K. Muhammed Shafi, Prateek Chawla, Abhaya S. Hegde, R. S. Gayatri, A. Padhye, C. M. Chandrashekar
Patent No. 502089, filed on July 12, 2022 and Granted on Janaury 23, 2024
In refereed journals

Quantum magnetometry using discretetime quantum walk
Kunal Shukla, C. M. Chandrashekar

Open system approach to Neutrino oscillations in a quantum walk framework
Himanshu Sahu, C. M. Chandrashekar

Multibit quantum random number generator from pathentangled single photons
K. Muhammed Shafi, Prateek Chawla, Abhaya S. Hegde, R. S. Gayatri, A. Padhye, C. M. Chandrashekar

Quantum walkbased protocol for secure communication between any two directly connected nodes on a network
Prateek Chawla, Adithi Ajith, C. M. Chandrashekar

Quantum illumination using polarizationpath entangled single photons for low reflectivity object detection in noisy background
K. Muhammed Shafi, A. Padhye, C. M. Chandrashekar

Multiqubit quantum computing using discretetime quantum walks on closed graphs
Prateek Chawla, Shivani Singh, Aman Agarwal, Sarvesh Srinivasan, C. M. Chandrashekar

Harnessing Brillouin Interaction in Rareearth Aluminosilicate Glass Microwires for Optoelectromechanic Quantum Transduction
Mrittunjoy Guha Majumdar, C. M. Chandrashekar

Quantum direct communication protocol using recurrence in kcycle quantum walk
Sanjeet Swaroop Panda, P. A. Ameen Yasir, C. M. Chandrashekar

Optical realization of onedimensional generalized splitstep quantum walks
P. A. Ameen Yasir, Abhaya S. Hegde, C. M. Chandrashekar

NonMarkovianity between site pairs in FMO complex using discretetime quantum jump model
M. Kundu, C. M. Chandrashekar

Noise resilience in pathpolarization hyperentangled probe states
Akshay Kannan Sairam, C. M. Chandrashekar

Characterization of anomalous diffusion in onedimensional quantum walks
Abhaya S. Hegde, C. M. Chandrashekar

Polarizationpathfrequency entanglement using interferometry and frequency shifters
Mrittunjoy Guha Majumdar, C. M. Chandrashekar

Generation of hyperentangled states and twodimensional quantum walks using J or q plates and polarization beamsplitters
P. A. Ameen Yasir, C. M. Chandrashekar

Quantum circuits for the realization of equivalent forms of onedimensional discretetime quantum walks on nearterm quantum hardware
Shivani Singh, Cinthia H. Alderete, Radhakrishnan Balu, Christopher Monroe, Norbert M. Linke, C. M. Chandrashekar

Quantum walks in polycyclic aromatic hydrocarbons
Prateek Chawla, C. M. Chandrashekar

Universal quantum computing using singleparticle discretetime quantum walk
Shivani Singh, Prateek Chawla, Anupam Sarkar, C. M. Chandrashekar

Hyperentanglementenhanced quantum illumination
Ashwith Varadaraj Prabhu, Baladitya Suri, C. M. Chandrashekar

Gravitationally induced entanglement dynamics between two quantum walkers
Himanshu Badhani, C. M. Chandrashekar

Digital quantum simulation framework for energy transport in an open quantum systems
Pragati Gupta, C. M. Chandrashekar

NonMarkovian channel from the reduced dynamics of coin in quantum walk
Javid Naikoo, Subhashish Banerjee, C. M. Chandrashekar

Quantum direct communication protocols using discretetime quantum walk
S. Srikara, C. M. Chandrashekar

Quantum walks and Dirac cellular automata on a programmable trappedion quantum computer
C. Huerta Alderete, Shivani Singh, Nhung H. Nguyen, Daiwei Zhu, Radhakrishnan Balu, Christopher Monroe, C. M. Chandrashekar, Norbert M. Linke

Discretetime quantum walk algorithm for ranking nodes on a network
Prateek Chawla, Roopesh Mangal, C. M. Chandrashekar

Quantum percolation in quasicrystals using continuoustime quantum walk
Prateek Chawla, C. V. Ambarish, C. M. Chandrashekar

Multibit quantum random number generator from a single qubit quantum walk
Anupam Sarkar, C. M. Chandrashekar

Optimal strategies to infer the width of an infinite square well by
performing measurements on the particle(s) contained in the well
Ilaria Pizio, Shivani Singh, C. M. Chandrashekar, Matteo G. A. Paris

Accelerated quantum walk, twoparticle entanglement generation and localization
Shivani Singh, Radhakrishnan Balu, Raymond Laflamme, C. M. Chandrashekar

Quantum walker as a probe for its coin parameter
Shivani Singh, C. M. Chandrashekar, Matteo G. A. Paris

Simulating Dirac Hamiltonian in curved spacetime by splitstep quantum Walk
Arindam Mallick, Sanjoy Mandal, Anirban Karan, C. M. Chandrashekar

Enhanced nonMarkovian behavior in quantum walks with Markovian disorder
N. Pradeep Kumar, Subhashish Banerjee, C. M. Chandrashekar

Bounds on the dynamics of periodic quantum walks and emergence of gapless and gapped Dirac equation
N. Pradeep Kumar, Radhakrishna Balu, Raymond Laflamme, C. M. Chandrashekar

Quantum ratchet in disordered quantum walk
Sagnik Chakraborty, Arpan Das, Arindam Mallick, C. M. Chandrashekar

Dynamics and energy spectra of aperiodic discretetime quantum walks
N. Lo Gullo, C. V. Ambarish, Th. Busch, L. Dell'Anna, C. M. Chandrashekar

Neutrino oscillations in discretetime quantum walk framework
Arindam Mallick, Sanjoy Mandal, C. M. Chandrashekar

Dirac Quantum Cellular Automaton from Splitstep Quantum Walk
Arindam Mallick, C. M. Chandrashekar

Localization and limit laws of a threestate alternate quantum walk on a twodimensional lattice
Takuya Machida, C. M. Chandrashekar

Limit distributions for
different forms of
fourstate quantum walks on a twodimensional lattice
T. Machida, C. M. Chandrashekar,
N. Konno, Th.
Busch

Localized quantum walks as
secured quantum
memory
C. M. Chandrashekar, Th. Busch

Quantum percolation and
transition point of a
directed discretetime quantum walk
C. M. Chandrashekar, Th. Busch

Single photons in an imperfect
array of
beamsplitters: Interplay between percolation, backscattering and
transient localization
C. M. Chandrashekar, S.
Melville, Th. Busch

Noiseenhanced quantum transport
on a closed
loop using quantum walks
C. M. Chandrashekar, Th. Busch

Twocomponent Diraclike
Hamiltonian for
generating quantum walk on one, two and threedimensional lattices
C. M. Chandrashekar

Enhancement of Geometric Phase
by Frustration
of Decoherence: A Parrondo like Effect
Subhashish Banerjee, C. M.
Chandrashekar, Arun
K. Pati

Decoherence on a twodimensional
quantum walk
using four and twostate particle
C. M. Chandrashekar, Th. Busch

Quantum walk on distinguishable
noninteracting manyparticles and indistinguishable twoparticle
C. M. Chandrashekar, Th. Busch

Hamilton's turns as visual
toolkit for
designing of singlequbit unitary gates
B. Neethi Simon, C. M.
Chandrashekar,
Sudhavathani Simon

Entanglement generation in
spatially separated
systems using quantum walk
C. M. Chandrashekar, Sandeep
Goyal, and
Subhashish Banerjee

Quantumness of noisy quantum
walks : a
comparison between measurementinduced disturbance and quantum discord
Balaji R. Rao, R. Srikanth, C.
M.
Chandrashekar and Subhashish Banerjee

Parrondo's game using a
discretetime quantum
walk
C. M. Chandrashekar and
Subhashish Banerjee

Disorderedquantumwalkinduced
localization
of a BoseEinstein condensate
C. M. Chandrashekar

Zeno subspace in quantumwalk
dynamics
C. M. Chandrashekar

Relationship between quantum
walks and
relativistic quantum mechanics
C. M. Chandrashekar, Subhashish
Banerjee, and
R. Srikanth

Quantumness in decoherent
quantum walk using
measurementinduced disturbance
R. Srikanth, Subhashish
Banerjee, and C. M.
Chandrashekar

Spatial entanglement using
quantum walk on a
manybody system
Sandeep K. Goyal and C. M.
Chandrashekar

Fractional recurrence in
discretetime quantum
walk
C. M. Chandrashekar

Quantum data bus in dipolar
coupled nuclear
spin qubits
Jingfu Zhang, Michael Ditty,
Daniel Burgarth,
Colm A. Ryan, C. M.
Chandrashekar, Martin Laforest, Osama Moussa, Jonathan Baugh, and
Raymond Laflamme

Direct observation of quantum
criticality in
Ising spin chains
Jingfu Zhang, Fernando M.
Cucchietti, C. M.
Chandrashekar, Martin
Laforest, Colm A. Ryan, Michael Ditty, Adam Hubbard, John K. Gamble,
Raymond Laflamme

Symmetrynoise interplay in
quantum walk on an
ncycle
Subhashish Banerjee, R.
Srikanth, C. M.
Chandrashekar, and Pranaw Rungta

Generic quantum walk using a
coinembedded
shift operator
C. M. Chandrashekar

Quantum phase transition using
quantum walks
in an optical lattice
C. M. Chandrashekar and Raymond
Laflamme

Optimizing the discrete time
quantum walk
using a SU(2) coin
C. M. Chandrashekar, R.
Srikanth and Raymond
Laflamme

Quantum information processing
using nuclear
and electron magnetic resonance: review and prospects
J. Baugh, J. Chamilliard, C. M.
Chandrashekar,
M. Ditty, A. Hubbard, M.
Laforest, D. Maslov, C. Negrevergne, M. Silva, S. Simmons, C. A. Ryan,
R. Laflamme, J. S. Hodges, C. Ramanathan, and D. G. Cory

Symmetries and noise in quantum
walk
C. M. Chandrashekar, R.
Srikanth, and S.
Banerjee

Implementing the onedimensional
quantum
(Hadamard) walk using a BoseEinstein condensate
C. M. Chandrashekar

Dynamic Manipulation of
BoseEinstein
Condensates with a Spatial Light Modulator
V. Boyer, R. M. Godun, G.
Smirne, D.
Cassettari, C. M. Chandrashekar, A.B. Deb, Z.J. Laczik and C. J. Foot

Dynamic optical trap generation
using FLC SLMs
for the manipulation of cold atoms
V. Boyer, C. M. Chandrashekar,
C.J. Foot and
Z.J. Laczik
Preprints under review

Experimental realization of universal quantum gates and sixqubit state using photonic quantum walk
Kanad Sengupta, K. Muhammed Shafi, S. P. Dinesh, Soumya Asokan, C. M. Chandrashekar

Experimental demonstration of quantum illumination using polarizationentangled photon pairs and CHSH value as measure
Kanad Sengupta, K. Muhammed Shafi, Soumya Asokan, C. M. Chandrashekar

Reduced dynamics of a PTsymmetric evolution
Himanshu Badhani, C. M. Chandrashekar

Secondorder correlations and purity of unheralded single photons from
spontaneous parametric downconversion
A. Padhye, K. Muhammed Shafi, C. M. Chandrashekar

Superposition of causal order in quantum walks: nonMarkovianity and causal asymmetry
Prateek Chawla, U. Shrikant, C. M. Chandrashekar

Bellinequality in pathentangled single photon and purity test
K. Muhammed Shafi, R. S. Gayatri, A. Padhye, C. M. Chandrashekar

NonHermitian quantum walks and nonMarkovianity: the coinposition interaction
Himanshu Badhani, Subhashish Banerjee, C. M. Chandrashekar

Optimal quantum simulation of open quantum systems
Pragati Gupta, C. M. Chandrashekar

Estimation of onedimensional discretetime quantum walk parameters by using machine learning algorithms
Parth Rajauria, Prateek Chawla, C. M. Chandrashekar

Interference and correlated coherence in disordered and localized quantum walk
Shivani Singh, C. M. Chandrashekar

Entanglement Properties of
Localized States in
1D Topological Quantum Walks
C. M. Chandrashekar, H. Obuse,
Th. Busch

Disorder induced localization
and enhancement
of entanglement in one and twodimensional quantum walks
C. M. Chandrashekar



