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Research Publications

A comprehensive record of peer-reviewed papers, journal articles, and preprints authored by the founding team of QuantumPhase Technology — spanning quantum sensing, ultracold atoms, atom interferometry, and gravitational wave detection.

Recent Publications

2022 – 2025
01
Picosecond-range network time scale based on an ensemble of atomic clocksUnder Review
R. Gonzalez Escudero, S. Kannoth Mavila, M. Weiss, F. Cozijn, K. Steinebach, K. Eikema, E. Dierikx, Y. Xie, S. Klemann, P. Klop, Sumit Sarkar, N. van Druten, F. Schreck, J. Koelemeij · Nature (under review) · 2025
Preprint
02
Terrestrial Very-Long-Baseline Atom Interferometry: summary of the second workshop
A. Abdalla et al. · EPJ Quantum Technology · 2025 · 12, 42
PDF DOI
03
Evaporative cooling by pulse width modulation (PWM) of optical dipole traps
S. Sagar Maurya, J. M. Sunil, M. Bhartiya, P. Dutta, J. Mangaonkar, R. Sawant & U. D. Rapol · Phys. Rev. Research · 2025 · 7, 043050
PDF DOI
04
Asymmetric dynamical localization and precision measurement of the micromotion of a Bose–Einstein condensate
S. Sagar Maurya, J. Bharathi Kannan, K. Patel, P. Dutta, K. Biswas, M. S. Santhanam & U. D. Rapol · Phys. Rev. A · 2024 · 110, 053307
PDF DOI
05
Spectroscopy of the 5s5p ³P₀ → 5s5d ³D₁ transition of strontium using laser cooled atoms
K. Patel, P. Gakkhar, K. Biswas, S. S. Maurya, P. Dutta, V. Lal, B. Mani & U. D. Rapol · J. Phys. B: At. Mol. Opt. Phys. · 2024 · 57, 105501
PDF DOI
06
Comparative analysis of phase noise for different configurations of Bragg lattice for an atomic gravimeter with Bose–Einstein condensate
P. Dutta, S. S. Maurya, K. Biswas, K. H. Patel & U. D. Rapol · AIP Advances · 2024 · 14, 015252
PDF DOI
07
A decade of advancement of quantum sensing and metrology in India using cold atoms and ions
P. Dutta, S. S. Maurya, K. Patel, K. Biswas, J. Mangaonkar, Sumit Sarkar, U. D. Rapol · J. Indian Inst. Sci. · 2023 · 103, 609–632
PDF DOI
08
Separating the output ports of a Bragg interferometer via velocity-selective transport
R. Piccon, Sumit Sarkar, J. Gomez Baptista, S. Merlet, F. Pereira dos Santos · Phys. Rev. A · 2022 · 106, 013303
PDF DOI
09
A simple and robust architecture of a laser system for atom interferometry
Sumit Sarkar, R. Piccon, S. Merlet, F. Pereira dos Santos · Opt. Express · 2022 · 30, 33583–33596
PDF DOI
10
Interplay between quantum diffusion and localization in the atom-optics kicked rotor
S. S. Maurya, J. Bharathi Kannan, K. Patel, P. Dutta, K. Biswas, J. Mangaonkar, M. S. Santhanam & U. D. Rapol · Phys. Rev. E · 2022 · 106, 034207
PDF DOI

Ultracold Atoms, BEC & Quantum Dynamics

2015 – 2021
11
Effects of finite momentum width on the reversal dynamics in a BEC-based atom-optics delta-kicked rotor
J. Mangaonkar, C. Vishwakarma, S. S. Maurya, Sumit Sarkar, J. L. MacLennan, P. Dutta, U. D. Rapol · J. Phys. B · 2020 · 53, 235502
PDF DOI
12
Non-monotonic diffusion rates in atom-optics Lévy kicked rotor
S. Paul, Sumit Sarkar, C. Vishwakarma, J. Mangaonkar, M. S. Santhanam, U. D. Rapol · Phys. Rev. E · 2019 · 100, 060201(R)
PDF DOI
13
A simple atomic beam oven with a metal thermal break
C. Vishwakarma, J. Mangaonkar, K. Patel, G. Verma, Sumit Sarkar, U. D. Rapol · Rev. Sci. Instrum. · 2019 · 90, 053106
PDF DOI
14
Diffraction of a CW atom laser in the Raman-Nath regime
Sumit Sarkar, J. Mangaonkar, C. Vishwakarma, U. D. Rapol · Phys. Rev. A · 2018 · 98, 043625
PDF DOI
15
Non-exponential decoherence and subdiffusion in atom-optics kicked rotor
Sumit Sarkar, S. Paul, C. Vishwakarma, S. Kumar, G. Verma, M. Sainath, U. D. Rapol, M. S. Santhanam · Phys. Rev. Lett. · 2017 · 118, 174101
PDF DOI
16
Generation of dark solitons and their instability dynamics in two-dimensional condensates
G. Verma, U. D. Rapol, R. Nath · Phys. Rev. A · 2017 · 95, 043618
PDF DOI
17
A compact atomic beam based system for Doppler-free laser spectroscopy of strontium atoms
G. Verma, C. Vishwakarma, C. V. Dharmadhikari & U. D. Rapol · Rev. Sci. Instrum. · 2017 · 88, 033103
PDF DOI
18
Bose-Einstein condensation in an electro-pneumatically transformed quadrupole-Ioffe magnetic trap
S. Kumar, Sumit Sarkar, G. Verma, C. Vishwakarma, Md Noaman, U. D. Rapol · New J. Phys. · 2015 · 17, 023062
PDF DOI
19
Open Source 3D-printed focussing mechanism for cellphone-based cellular microscopy
Y. K. Jawale, U. Rapol, C. A. Athale · J. Microscopy · 2018 · 273, 105
PDF DOI

Gravitational Wave Detection — LIGO & Virgo Collaboration

2020 – 2022
20
Constraints on dark photon dark matter using data from LIGO's and Virgo's third observing run
R. Abbott et al. (LIGO/Virgo Collaboration) · Phys. Rev. D · 2022 · 105(6), 063030
DOI
21
Search for continuous gravitational waves from 20 accreting millisecond X-ray pulsars in O3 LIGO data
R. Abbott et al. (LIGO/Virgo Collaboration) · Phys. Rev. D · 2022 · 105(2), 022002
DOI
22
GWTC-2: Compact binary coalescences observed by LIGO and Virgo during the first half of the third observing run
R. Abbott et al. (LIGO/Virgo Collaboration) · Phys. Rev. X · 2021 · 11(2), 021053
DOI
23
Observation of gravitational waves from two neutron star–black hole coalescences
R. Abbott et al. (LIGO/Virgo Collaboration) · ApJ Lett. · 2021 · 915, L5
DOI
24
Constraints on cosmic strings using data from the third Advanced LIGO–Virgo observing run
R. Abbott et al. (LIGO/Virgo Collaboration) · Phys. Rev. Lett. · 2021 · 126(24), 241102
DOI
25
Gravitational-wave constraints on the equatorial ellipticity of millisecond pulsars
R. Abbott et al. (LIGO/Virgo Collaboration) · ApJ Lett. · 2020 · 902, L21
DOI
26
Searches for continuous gravitational waves from young supernova remnants in the early third observing run of Advanced LIGO and Virgo
R. Abbott et al. (LIGO/Virgo Collaboration) · Astrophys. J. · 2021 · 921(1), 80
DOI
27
Population properties of compact objects from the second LIGO-Virgo Gravitational-Wave Transient Catalog
R. Abbott et al. (LIGO/Virgo Collaboration) · ApJ Lett. · 2021 · 913(1), L7
DOI

Foundational & Early Career Work

2001 – 2015
28
Scalable multiparticle entanglement of trapped ions
H. Häffner, W. Hänsel, C. Roos, J. Benhelm, et al. · Nature · 2005 · 438(7068), 643
PDF DOI
29
Accurate determination of the scattering length of metastable helium atoms using dark resonances between atoms and exotic molecules
S. Moal, M. Portier, J. Kim, J. Dugué, U. Rapol, M. Leduc, C. Cohen-Tannoudji · Phys. Rev. Lett. · 2006 · 96(2), 023203
PDF DOI
30
Measurement of the hyperfine structure of the S₁/₂ − D₅/₂ transition in ⁴³Ca⁺
J. Benhelm, G. Kirchmair, U. Rapol, T. Körber, C. Roos, R. Blatt · Phys. Rev. A · 2007 · 75(3), 032506
PDF DOI
31
Laser cooling and trapping of Yb from a thermal source
U. Rapol, A. Krishna, A. Wasan, V. Natarajan · Euro. Phys. J. D · 2004 · 29(3), 409
PDF DOI
32
Subnatural linewidth in room-temperature Rb vapor using a control laser
U. Rapol, A. Wasan, V. Natarajan · Phys. Rev. A · 2003 · 67(5), 053802
PDF DOI
33
High-accuracy wavemeter based on a stabilized diode laser
A. Banerjee, U. Rapol, A. Wasan, V. Natarajan · App. Phys. Lett. · 2001 · 79, 2139
PDF DOI
34
Loading of a Rb magneto-optic trap from a getter source
U. D. Rapol, A. Wasan, V. Natarajan · Phys. Rev. A · 2001 · 64, 023402
PDF DOI
35
Strong broadband optical absorption in silicon nanowire films
L. Tsakalakos, J. Balch, J. Fronheiser, M. Shih, et al. & Umakant Rapol · J. Nanophotonics · 2007 · 1(1), 013552
PDF DOI
Back to About Us Showing representative publications. Full list on Google Scholar.